What is the information about the environment? Urgent!

Water is the source of life. Without water, no living things on the earth can survive. "Fish swimming in Qinglingling River" is out of sight, and the water has been seriously polluted. Maybe you will say, isn't there bottled drinking water? But drinking bottled water is not the best way to solve water pollution, and drinking bottled water also needs water resources. And drinking bottled drinking water is not very healthy for people's health.

Qianshanhe: I once went to Qianshanhe to investigate and found that Qianshanhe was seriously polluted by water. The river is turbid, and there is a lot of plastic garbage floating on the water surface, which has an unpleasant smell from time to time. It turns out that there are many "three noes" people living under the Changsheng Bridge. Their behavior left great trauma to Qianshan River. During the day, they eat and drink Lazar and urinate everywhere ... If they continue like this for a long time, even the clear rivers will be destroyed by them. Today, although Qianshan River has been sorted out, its sediment concentration is high, and the river is still turbid due to soil erosion. I am also very sad to see that there are mountains of industrial waste by the Qianshan River.

Therefore, we are punished by nature, and our drinking water always feels salty. This is the salt tide in Zhuhai.

In the investigation, I was deeply inspired: we should start from now and start from ourselves. We organized an environmental protection team to carry out environmental protection in action activities and strive to be environmental protection guards.

Environmental protection is in action

In this year's "10/day" golden week, we issued an initiative to all students: have an environmentally friendly long vacation. We walked into the society and used the lens to show the "wonderful" in the "environmental protection" world. We have some difficulties when using digital cameras: ordinary cameras have a switch. On is on, off is off. So is our digital camera. Move the key to the open position. Then, we need to adjust the focus. Just press it gently at last. When you press the shutter, don't shake your hands, but hold the camera steady, so that the effect will be good. After the shooting is finished, it is also very difficult to send photos: first, enter the free email, click write, put a theme in the box and write down who to send it to. Since you are sending photos, you should click Add Attachment, paste the photos, write your name, and then click "Send". With the help of my parents, I finally mastered modern communication skills.

The photos we took were published in the Life Weekly of Zhuhai Special Zone Daily in June 65438+1October 65438+April. The photo on the homepage is the work of Zhu, a classmate of our school. The editor specially enlarged it! Very conspicuous. The trees are lush. Hey! It is made of a plastic can. What an ulterior motive! Look at this pair again: the telephone hall is covered with advertising papers, which are colorful. Our eyes are attracted by another photo, which is a photo of people destroying the environment. There is a flour-brushed wall in the photo, and a sentence is written next to it: "Give the wall a new face." It always reminds us to take care of the environment.

In the activity, I tasted the sweetness of modern technology, and it was clearer with a digital camera; E-mail makes communication more comfortable.

Environment you, me and him, environment depends on everyone. As long as everyone loves environmental protection, our surrounding environment will be better!

Investigation Report on "We and the Surrounding Environment"

Dear Chairman of Ningxia Hui Autonomous Region,

Hello! Although the environment in Ningxia has changed a lot in recent years, it has become clean! But there are still all kinds of "garbage incidents".

There are 9 trash cans on the road opposite Building 7 in Yongkang Nanjuan, Yinchuan. The stench and noise when loading garbage seriously affected their normal life. This trash can has been here for 10 years. There were only three 4s before, but now it has increased to nine. Every day after 6 pm, the sweeper empties the garbage inside, and then seven or eight scavengers rummage in the trash can. After a while, the garbage was spread out in the middle of the road. When the wind blows, plastic bags fly around, flies swarm and stink everywhere. Moreover, there are two rows of bungalows in the yard of Building 7, and there is no sewer, so residents pour urine into the garbage bin. Not to mention that. At eleven o'clock in the evening, sanitation workers drove trucks to collect garbage. At night, the rumble of trucks is harsh, the cries of commanding trucks, the friction between shovels and the ground, and the collision between cars and iron boxes make people unable to live a stable life.

Not long ago, three rainwater wells at the intersection of Yinchuan South Ring Road and Yuhuangge South Street burst at the same time, causing cross-flow of street sewage and causing residents' dissatisfaction. After three days and two nights of emergency dredging, the maintenance personnel of the municipal management office pumped clean water. After going down the well, they found that there were several meters of garbage in the pipeline, such as lunch boxes, cans, mineral water bottles, plastic bags, chopsticks and so on. There were several wooden sticks at the mouth of the pipeline to block these garbage and block the sewer pipe. "Where does the garbage in the pipeline come from?" These are all restaurants nearby. When it is dark and no one is around, they secretly open the manhole cover and pour the garbage in.

Economic development has brought prosperity to the market, and people's living standards have gradually improved. However, electronic, white, construction and other garbage will also be born. According to statistics, at present, the annual output of urban garbage in China has reached about 654.38+0.2 billion tons, accounting for more than a quarter of the total, and it is increasing at an annual rate of about 8%. The total amount of untreated garbage in China is more than 7 billion tons, covering an area of about 800,000 mu.

Thankfully, you have noticed this problem and attached great importance to it. You plan to spend 654.38 billion yuan to build a garbage disposal site in Ningxia (regional money) so that we can live a stable, happy and pollution-free life. :) Thank you!

welcome

welcome

The environment around us has a very close relationship with our life, just like fish and water, which are inseparable, and no one can do without each other.

Zhuhai is a beautiful coastal city. "Cloudy sky on the sea, Zhuhai in the world" is the best summary. Zhuhai is beautiful, but there is a "strange color" hidden in the United States and China. Because individual citizens do not pay attention to hygiene, it has added a disharmonious "stain" to the beautiful Zhuhai. Under the guidance of my teacher, I made a survey of our surroundings.

White pollution, terrible!

The invention of paper led to the rapid development of human invention. However, in real life, a blank sheet of paper has greatly polluted the surrounding environment of human beings.

Waste of paper: In the garbage pools of our class and school, there are a lot of paper in the garbage pools every day. Yellow, white, green ... dazzling. Colorful homework paper is kneaded into a ball.

Paper recycling: In my survey, I found that 95% people mix recyclable and non-recyclable garbage. "Mixed", so this is the main reason for paper pollution! If people sort and recycle garbage, white pollution will greatly reduce the natural environment, and our living environment will be very different.

Disposable paper cups: In modern life, disposable articles are easy to use, but they cannot be ignored.

The problem has arisen. Disposable articles waste resources and pollute the environment. For example, in our daily life, drinking cups are essential. But how to choose a cup to drink water? For convenience, almost every household uses disposable paper cups. Everyone says it's convenient and cheap. But it is precisely because of the emergence of disposable paper cups that the environment around us has been greatly damaged. Citizens use disposable paper cups and throw them everywhere, causing serious white pollution.

Water pollution, health care!

Water is the source of life. Without water, no living things on the earth can survive. "Fish swimming in Qinglingling River" is out of sight, and the water has been seriously polluted. Maybe you will say, isn't there bottled drinking water? But drinking bottled water is not the best way to solve water pollution, and drinking bottled water also needs water resources. And drinking bottled drinking water is not very healthy for people's health.

Qianshanhe: I once went to Qianshanhe to investigate and found that Qianshanhe was seriously polluted by water. The river is turbid, and there is a lot of plastic garbage floating on the water surface, which has an unpleasant smell from time to time. It turns out that there are many "three noes" people living under the Changsheng Bridge. Their behavior left great trauma to Qianshan River. During the day, they eat and drink Lazar and urinate everywhere ... If they continue like this for a long time, even the clear rivers will be destroyed by them. Today, although Qianshan River has been sorted out, its sediment concentration is high, and the river is still turbid due to soil erosion. I am also very sad to see that there are mountains of industrial waste by the Qianshan River.

Therefore, we are punished by nature, and our drinking water always feels salty. This is the salt tide in Zhuhai.

In the investigation, I was deeply inspired: we should start from now and start from ourselves. We organized an environmental protection team to carry out environmental protection in action activities and strive to be environmental protection guards.

Environmental protection is in action

In this year's "Ten? During the "Golden Week", we issued an initiative to all students: to have an environmentally friendly long vacation. We walked into the society and used the lens to show the "wonderful" in the "environmental protection" world. We have some difficulties when using digital cameras: ordinary cameras have a switch. On is on, off is off. So is our digital camera. Move the key to the open position. Then, we need to adjust the focus. Just press it gently at last. When you press the shutter, don't shake your hands, but hold the camera steady, so that the effect will be good. After the shooting is finished, it is also very difficult to send photos: first, enter the free email, click write, put a theme in the box and write down who to send it to. Since you are sending photos, you should click Add Attachment, paste the photos, write your name, and then click "Send". With the help of my parents, I finally mastered modern communication skills.

The photos we took were published in the Life Weekly of Zhuhai Special Zone Daily in June 65438+1October 65438+April. The photo on the homepage is the work of Zhu, a classmate of our school. The editor specially enlarged it! Very conspicuous. The trees are lush. Hey! It is made of a plastic can. What an ulterior motive! Look at this pair again: the telephone hall is covered with advertising papers, which are colorful. Our eyes are attracted by another photo, which is a photo of people destroying the environment. There is a flour-brushed wall in the photo, and a sentence is written next to it: "Give the wall a new face." It always reminds us to take care of the environment.

In the activity, I tasted the sweetness of modern technology, and it was clearer with a digital camera; E-mail makes communication more comfortable.

Environment you, me and him, environment depends on everyone. As long as everyone loves environmental protection, our surrounding environment will be better!

Respondents: ⒐の Kula № Pickup-Tongsheng Grade 1 4- 14 18: 13.

Keep it simple. The abridged number of Kongjiadian is very high-tech. It is difficult for people to go to the store.

Consider killing the scenery and liberate immediately. A few more seconds. Ha hungry oh bean curd tree.

Interviewee: Daliumang 008- Novice Level 3 4- 16 13:23

Qinghe River is located in the southwest corner of yanliang district, Xi City, and it is a small river around us. Hearing the name Qinghe makes people feel fresh and relaxed. However, in recent years, more and more people have this feeling of "unclear river". In order to find out the reason of "unclear Qinghe River", several members of our biotechnology group, led by the team leader, went to Qinghe River.

What greeted us was a stench, and Qinghe had become a stinking ditch. The water is black, so the large white foam floating on the water is disgusting at first sight. The water here is very slow, very quiet and suffocating. People can't help but think of Mr. Wen Yiduo's masterpiece "Dead Water". This is the meaning of the masterpiece, which not only foresees the environmental problems decades later, but also describes it word for word. After careful search, we were surprised to find that in some very small areas on the shore, we could also see some creatures swimming under the yellow grass leaves (according to the test, they were water fleas). The little guy is cute, but he is huge, and there are many places to look up. You can see that when they are put into test tubes, they look like fish worms. Perhaps it is because pollution limits the number of fish that these small creatures can multiply in large numbers.

Climbing high and overlooking: a dilapidated brand "phosphate fertilizer plant" stands proudly on the road in the north; The machinery of the western chemical fertilizer plant looks like a giant; The most terrible thing is the paper mill in the east. Thick black smoke billowed from the chimney and spread around at will. The factory building under the chimney looks shabby and messy. Outside the factory building, the trees on the river bank have already withered and withered, which makes people feel the sadness of the end of life.

On the shore, we found a small sewage outlet with a diameter of about one meter, which is not surprising, because a minute later, we immediately found a sewage outlet with a radius of about two meters on the other side of the bridge. A large number of gray matter and white foam churned out from the bottom of the river, constantly spreading outward, forming a white foam area with a length of 70 meters and a width of about 15 meters, and continuously extending. Around the sewage outlet, we found that the vegetation here is yellow, and the reason remains to be investigated. The sewage outlet is under the bridge seat, so it is not easy to find it without careful observation. This shows that the cunning of businessmen is really shameful.

After feeling indignant at what we saw, we went to visit an old man who lived in a cowshed on the bank of Qinghe River. The old man looks old and poor. He seems very excited about our arrival. Based on more than ten years' experience in watching news broadcast, we conducted some interviews with the elderly. The old man told us that the source of this river is the rugged mountain in Sanyuan. Originally, the water was abundant and the river was deep, but years of soil erosion made the silt at the bottom of the river deposit three or four feet deep. During the Cultural Revolution in the 1960s and 1970s, this water was the lifeblood of farmers, and they depended on it for bathing, eating, watering and washing. At that time, there were large reeds by the water (now it's just a gloomy yellow grass! )。 Pollution has been very serious in recent years. In summer, mosquitoes growing in sewage are very scary. Paper mills on the east bank of the river are the main sources of pollution. The province has repeatedly asked it to close down, but it has been repeatedly banned. It was closed for a few days and then opened again. After the paper mill closed down, there were fish in the Qinghe River, and some people came to fish specially.

In order to deeply investigate the pollution situation of Qinghe River, we sampled and analyzed the river water. Tested by the Environmental Protection Bureau, the oxygen content in the water is 1/3 of the standard value, and the PH value is 8.03. The main organism in the water is Daphnia, and we have observed and studied Daphnia.

Daphnia belongs to the phylum Arthropoda, including branchiae, crustacea and branchiae. Body segmentation, appendage segmentation and nerve sensation are all concentrated in the head; Daphnia is small, produces fresh water, has flat gills at the base of appendages, molts and has strong adaptability, and feeds on small microorganisms and algae in water.

The following is our observation record of Daphnia:

Day 1: Water temperature: 18℃, size: 2 ~ 3mm, quantity: 6, and 4 of them have black particles arranged in order on the back.

The next day: the water temperature: 16℃, it was found that there was molting in the bottle, like a pod, with the back connected and the abdomen cracked.

The third day: water temperature: 20℃, and the black particles on the backs of four of them became indistinguishable and arranged side by side.

The color changes slightly, not spherical. In the evening, one of them began to give birth. Observe carefully that its tail is tilted forward, and its young son comes out from the gap between its tail and its back. As soon as it is born, it can swim.

Day 4: Water temperature: 14℃. All the water fleas with eggs on their backs have been laid, and there are more than 30 new fleas. Two mature water fleas died.

Day 5: Water temperature: 65438 08℃, and all the mature Daphnia died.

Observation summary:

(1) Proper temperature can accelerate the growth and reproduction of Daphnia. (The water temperature is 4℃, and most water fleas still carry eggs on their backs; The indoor temperature is 65438 08℃, and all Daphnia are produced. )

(2) The food web analysis of river ecosystem is as follows:

In this ecosystem, due to the serious sewage discharge from the paper mill, the water quality deteriorated and a large number of fish died, which led to the explosive reproduction of Daphnia, which directly affected the number of microorganisms and algae in the water and greatly reduced the self-purification ability of the river.

Because a large number of fish died, the food source of waterfowl was destroyed and could not survive; As a result, mosquitoes proliferate and bring many diseases to human beings, such as malaria.

Life exploration experiment of Daphnia

Experiment 1: During the day, put half the bottles in the sun and the other half in the shade, so all six bottles are in the shade. At night, half of them were placed under the lamp and the other half in the shade, so all six of them gathered under the lamp.

Conclusion: Daphnia is sensitive to light intensity and likes moderate light.

Experiment 2: Take a drop of river water cultured in a test tube and observe it under a microscope. There are about 900- 1000 microorganisms in a drop of water. Put 30 Daphnia into a test tube, and after 6 hours, take a drop and observe it again. Microbes are obviously reduced, leaving only 200-300.

Conclusion: Microorganisms are the food of Daphnia.

Experiment 3: Drop a few drops of gray-black river sewage into the bottle and let it stand. After a night, the color of the water faded, and the intestines of Daphnia were gray-black. After several hours, the intestinal color returned to normal.

Conclusion: Daphnia absorbs inorganic salts or minerals.

Experiments show that Daphnia can adapt to the sewage environment and purify the sewage to some extent.

There is no doubt that environmental problems have become a big problem related to human survival, and everyone can't escape. So we use needles.

The pollution of Qinghe River was investigated. See the big from the small and the whole from the local, so as to further understand the environmental status of China. It can be said that I didn't know, but I was shocked at first sight. The members of this group were surprised by the repeated pollution on the Qinghe River, which made them indignant. Why is pollution so rampant that it can't be treated? In the final analysis, human beings are greedy for profits, and their inflated selfish desires can never be satisfied. However, this is not something we can change. What we can do is to put forward some feasible measures to save this precarious ecological environment.

Paper recycling: In my survey, I found that 95% people mix recyclable and non-recyclable garbage. "Mixed", so this is the main reason for paper pollution! If people sort and recycle garbage, white pollution will greatly reduce the natural environment, and our living environment will be very different.

Disposable paper cups: In modern life, disposable articles are easy to use, but they cannot be ignored.

The problem has arisen. Disposable articles waste resources and pollute the environment. For example, in our daily life, drinking cups are essential. But how to choose a cup to drink water? For convenience, almost every household uses disposable paper cups. Everyone says it's convenient and cheap. But it is precisely because of the emergence of disposable paper cups that the environment around us has been greatly damaged. Citizens use disposable paper cups and throw them everywhere, causing serious white pollution.

Water pollution, health care!

Water is the source of life. Without water, no living things on the earth can survive. "Fish swimming in Qinglingling River" is out of sight, and the water has been seriously polluted. Maybe you will say, isn't there bottled drinking water? But drinking bottled water is not the best way to solve water pollution, and drinking bottled water also needs water resources. And drinking bottled drinking water is not very healthy for people's health.

Qianshanhe: I once went to Qianshanhe to investigate and found that Qianshanhe was seriously polluted by water. The river is turbid, and there is a lot of plastic garbage floating on the water surface, which has an unpleasant smell from time to time. It turns out that there are many "three noes" people living under the Changsheng Bridge. Their behavior left great trauma to Qianshan River. During the day, they eat and drink Lazar and urinate everywhere ... If they continue like this for a long time, even the clear rivers will be destroyed by them. Today, although Qianshan River has been sorted out, its sediment concentration is high, and the river is still turbid due to soil erosion. I am also very sad to see that there are mountains of industrial waste by the Qianshan River.

Therefore, we are punished by nature, and our drinking water always feels salty. This is the salt tide in Zhuhai.

In the investigation, I was deeply inspired: we should start from now and start from ourselves. We organized an environmental protection team to carry out environmental protection in action activities and strive to be environmental protection guards.

Environmental protection is in action

In this year's "10/day" golden week, we issued an initiative to all students: have an environmentally friendly long vacation. We walked into the society and used the lens to show the "wonderful" in the "environmental protection" world. We have some difficulties when using digital cameras: ordinary cameras have a switch. On is on, off is off. So is our digital camera. Move the key to the open position. Then, we need to adjust the focus. Just press it gently at last. When you press the shutter, don't shake your hands, but hold the camera steady, so that the effect will be good. After the shooting is finished, it is also very difficult to send photos: first, enter the free email, click write, put a theme in the box and write down who to send it to. Since you are sending photos, you should click Add Attachment, paste the photos, write your name, and then click "Send". With the help of my parents, I finally mastered modern communication skills.

The photos we took were published in the Life Weekly of Zhuhai Special Zone Daily in June 65438+1October 65438+April. The photo on the homepage is the work of Zhu, a classmate of our school. The editor specially enlarged it! Very conspicuous. The trees are lush. Hey! It is made of a plastic can. What an ulterior motive! Look at this pair again: the telephone hall is covered with advertising papers, which are colorful. Our eyes are attracted by another photo, which is a photo of people destroying the environment. There is a flour-brushed wall in the photo, and a sentence is written next to it: "Give the wall a new face." It always reminds us to take care of the environment.

In the activity, I tasted the sweetness of modern technology, and it was clearer with a digital camera; E-mail makes communication more comfortable.

Environment you, me and him, environment depends on everyone. As long as everyone loves environmental protection, our surrounding environment will be better!

Investigation Report on "We and the Surrounding Environment"

Dear Chairman of Ningxia Hui Autonomous Region,

Hello! Although the environment in Ningxia has changed a lot in recent years, it has become clean! But there are still all kinds of "garbage incidents".

There are 9 trash cans on the road opposite Building 7 in Yongkang Nanjuan, Yinchuan. The stench and noise when loading garbage seriously affected their normal life. This trash can has been here for 10 years. There were only three 4s before, but now it has increased to nine. Every day after 6 pm, the sweeper empties the garbage inside, and then seven or eight scavengers rummage in the trash can. After a while, the garbage was spread out in the middle of the road. When the wind blows, plastic bags fly around, flies swarm and stink everywhere. Moreover, there are two rows of bungalows in the yard of Building 7, and there is no sewer, so residents pour urine into the garbage bin. Not to mention that. At eleven o'clock in the evening, sanitation workers drove trucks to collect garbage. At night, the rumble of trucks is harsh, the cries of commanding trucks, the friction between shovels and the ground, and the collision between cars and iron boxes make people unable to live a stable life.

Not long ago, three rainwater wells at the intersection of Yinchuan South Ring Road and Yuhuangge South Street burst at the same time, causing cross-flow of street sewage and causing residents' dissatisfaction. After three days and two nights of emergency dredging, the maintenance personnel of the municipal management office pumped clean water. After going down the well, they found that there were several meters of garbage in the pipeline, such as lunch boxes, cans, mineral water bottles, plastic bags, chopsticks and so on. There were several wooden sticks at the mouth of the pipeline to block these garbage and block the sewer pipe. "Where does the garbage in the pipeline come from?" These are all restaurants nearby. When it is dark and no one is around, they secretly open the manhole cover and pour the garbage in.

Economic development has brought prosperity to the market, and people's living standards have gradually improved. However, electronic, white, construction and other garbage will also be born. According to statistics, at present, the annual output of urban garbage in China has reached about 654.38+0.2 billion tons, accounting for more than a quarter of the total, and it is increasing at an annual rate of about 8%. The total amount of untreated garbage in China is more than 7 billion tons, covering an area of about 800,000 mu.

Thankfully, you have noticed this problem and attached great importance to it. You plan to spend 654.38 billion yuan to build a garbage disposal site in Ningxia (regional money) so that we can live a stable, happy and pollution-free life. ：

Some people think that loving the motherland is empty and vague, which seems to have something to do with each of us, but it seems irrelevant and far away from us. In fact, loving the motherland is not an empty talk, but a tangible action embodied in us. The motherland is composed of a real mountain, a piece of water, a grass and a tree, a piece of land, a large and small unit, the flesh and blood of 654.38+0.3 billion people and countless wild animals and plants. To love the motherland, we should start with loving the mountains, rivers, grass and trees of the motherland, protecting every inch of land, caring for every unit, caring for everyone and every wild animal and plant. If you don't care about these little things, then loving the motherland will really become empty talk. Ecological morality is living animals, plants, microorganisms and inanimate natural conditions and phenomena, and morality is a binding code of conduct. Ecological morality is about caring for all animals and plants, maintaining the original ecological balance with altruism, and not destroying our living environment artificially. At present, the consumption of nature's products in our society has exceeded the actual output capacity of nature, and the consumption is 0.3 times that of 65438+ output. If we used to take from nature, we should give priority to protecting nature now. Protecting the environment in which we live is, of course, protecting our motherland, and of course, loving our motherland. So we say, "To establish ecological morality is also to love the motherland." More specifically, organize more "paper teams" and "environmental protection teams", save more paper and trees for the motherland, do a good job in environmental protection, establish more "small green banks", recycle more resources for the motherland, plant more "young pioneers trees" and "young pioneers forests", restore a better ecological environment for the motherland, and carry out bird catching projects to restore the motherland to a more beautiful place. These little things we are doing are much better than empty talk. This is a concrete action of loving the motherland.

Our environmental protection means that we have a wish-a better life in the future, which in itself is beneficial to the motherland; Ecological teenagers learn better, because we learn to talk about the motherland from the "big self", so doing so is the basis of loving the motherland; Especially in our activities, we can cultivate a lifelong good habit of environmental protection, exercise our organizational and communication skills, enrich our social experience and improve our comprehensive quality ... which can lay a good foundation for building our motherland in the future.

Our Chinese nation is an ancient and great nation with a long history and splendid culture. Patriotism has always been the spiritual force supporting our nation. Patriotism is no stranger to everyone, and each of us should have sincere love and deep attachment to our motherland. However, loving the motherland is not only an idea, but also a responsibility. We should not stay in words, but should pay corresponding actions.

A teenager's patriotism should first learn well, lay a solid foundation for serving the motherland, and focus on building and defending the motherland, protecting the environment and caring for his home. This is a concrete manifestation of patriotism and the best action today.

We only have one earth, which is the home of mankind. With the progress of society, the development of economy and the continuous growth of population, our living environment is being destroyed day by day. Water resources are polluted, forest resources are cut down excessively, soil desertification and so on, which are the main environmental problems. Caring for the environment is everyone's responsibility. We should become ecological teenagers in the new century.

Love the motherland should start from bit by bit, from the little things around us, and we will do it well!

Loving the motherland requires positive actions and concrete actions. Loving the motherland needs to do great things, and it also needs to start from bit by bit. We organized the "Chinese Children's Environmental Protection Action" and applied for the establishment of the "Children's Environmental Protection Festival". We protect the environment and maintain the ecology with our own practical actions, which means loving the motherland. When the environment is good, many people will drink clean water again and breathe fresh air.

Many human activities discharge harmful substances into natural and artificial environments such as atmosphere, water and soil, causing environmental pollution; Some changes in nature will also affect the environmental quality. Environmental monitoring is a qualitative and quantitative detection of pollution sources and environmental conditions according to various national or local environmental standards on pollution prevention and protection of environmental quality, which provides a basis for scientific research, decision-making, legislation, handling pollution accidents and environmental supervision and management. Environmental monitoring is the "eyes and ears" of all environmental protection activities.

In practical work, environmental monitoring can be divided into two categories. The first is pollution source monitoring, that is, monitoring the discharge of pollutants. Generally, samples are collected at regular and fixed points at pollutant discharge ports, and the concentration, emission and temporal and spatial distribution of different forms of harmful substances are analyzed and determined. The second is environmental monitoring, that is, analyzing and monitoring the pollutants in the environment, their changing laws and environmental impacts, making clear their values, scope and pollution degree, and describing the environmental quality status and development trend through comprehensive analysis.

According to different environmental factors, environmental monitoring can be divided into air pollution monitoring, water pollution monitoring, soil pollution monitoring and biological pollution monitoring. According to the nature of pollutants, it can be divided into chemical poison monitoring, thermal pollution monitoring, noise pollution monitoring and radioactive pollution monitoring. The monitoring items commonly used in air pollution monitoring mainly include meteorological parameters and total suspended particulate matter (TSP), dustfall, carbon monoxide (CO), sulfur dioxide (SO2), hydrocarbons (HC), nitrogen oxides (NOx), ozone (O3) and so on. The monitoring items of surface water quality generally include hydrometeorological parameters, temperature, pH value, suspended solids (SS), dissolved oxygen (DO), biological oxygen consumption (BOD), chemical oxygen consumption (COD), and some poisons.

Environmental monitoring is a high-tech work, which must be carried out by professionals in accordance with the monitoring methods and standards stipulated by the state and the world, and the monitoring results should be compiled into professional documents. Total quality control should be carried out in the monitoring process to ensure the reliability of data.

Environmental standards are unified, statutory and technical provisions for certain environmental elements. Environmental standard is one of the most important tools in environmental protection. Environmental standards are used to specify the technical work of environmental protection and evaluate the effects of environmental protection and pollution prevention.

Environmental standards mainly include: environmental quality standards, pollutant discharge standards, analytical methods standards, and sewage charges standards. In addition, there are some regulations on standard environmental vocabulary, terms and signs. Among them, environmental quality standards and pollutant discharge standards are the core of the environmental standard system.

Environmental standards are formulated according to strict scientific methods and procedures. The formulation of environmental standards should also refer to the natural environmental characteristics, scientific and technological level and social and economic development of countries and regions in a certain period. Environmental standards are too strict and unrealistic, which will limit social and economic development.