Radog Reservoir Immigrants

Since 1972, the Yellow River has been frequently cut off. There are many reasons for disconnection, which can be summarized as follows:

1. Global Warming-With the intensification of global warming in recent years, on the one hand, the evaporation of river channels has increased greatly, and on the other hand, the glaciers in the upper reaches melt and absorb a lot of heat in spring and summer, which leads to the local temperature in the inland being lower than normal, and the temperature difference between the inland and the ocean is reduced, which in turn leads to the weakening of the monsoon and the lack of water vapor brought into the inland by the monsoon from the sea surface. Although global warming melts glaciers and increases the upstream water flow, it cannot offset the effects of increased evaporation and weakened monsoon. The water volume in the middle and lower reaches is decreasing year by year.

2. Vegetation destruction-The vegetation in the Loess Plateau is seriously destroyed, and the land lacking vegetation conservation is gradually desertified, with high evaporation. The dried-up groundwater needs to be continuously absorbed and replenished by flowing through rivers.

3. Backward irrigation methods-most of the middle and upper reaches of the Yellow River flow through economically underdeveloped border areas, old and young, lacking the technology and funds for water-saving irrigation, and most of them are flooded, resulting in serious waste of water resources in the Yellow River.

① The upper reaches belong to arid and semi-arid areas, and the middle reaches are the main recharge areas, but the soil erosion is serious, the seasonal variation is great, the downstream area is small, and the recharge is small;

(2) The population growth in the basin is fast, and the population growth rate far exceeds the grain growth rate;

In recent decades, with the development of society, the industrial and urban water consumption along the Yellow River has been increasing, and the irrigation area of the Yellow River has been expanding.

(4) The reservoir regulation capacity is low, and the water resources management is not unified;

⑤ Low water fee can't arouse people's awareness of water saving, and industrial and agricultural water is wasted;

⑥ Environmental pollution greatly reduces the utilization rate of the Yellow River water.

waterfall

Due to sediment deposition, in most sections of the Yellow River with a total length of 5,464 kilometers, the riverbed is higher than the cities and farmland in the basin, and it is constrained by dikes, so it is called "suspended river". So where did the Yellow River become a "hanging river"?

Dengkou County, southwest of Bayannur League, Mongolia, where the Yellow River is 4 to 6 meters higher than the county on average.

The Yellow River flows between Zhongtiaoshan Mountain and Qinling Mountains and passes through Jin Meng, Henan Province. From here, 30 kilometers away from the Yellow River, it is Luoyang, the famous capital of China. Luoyang is one of the eight ancient capitals in China. Since the Eastern Zhou Dynasty, the Eastern Han Dynasty, the Cao Wei Dynasty, the Western Jin Dynasty, the Northern Wei Dynasty, the Sui Dynasty (Yang Di), the Tang Dynasty (Wu Zetian), the Later Liang Dynasty and the Later Tang Dynasty have all established their capitals here, which is called the "Ancient Capital of Nine Dynasties".

After the Yin Dynasty was destroyed, Jiuding, the national treasure, moved to Luoyang with the intention of taking Luoyang as its capital. When the King of Wu died, Zhou and Zhao, who were the kings at that time, built Luoyi on a large scale, and established two cities, namely, Wangcheng and Zhoucheng. Between Jianshui East and Shuixi is Wangcheng, which is today's Wangcheng Park in Luoyang, Henan Province. In Shuidong, near the White Horse Temple today, is Chengzhou City. Move the capital to Wangcheng, and move the capital to Zhoucheng in Zhou. After Liu Xiu proclaimed himself emperor in the Eastern Han Dynasty, Luoyang became the capital.

Luoyang City in Han and Wei Dynasties was expanded on the basis of the ruins of Chengzhou City. The history of Luoyang City is "90 steps from north to south and 60 steps from east to west", so it is also called "96 City".

As early as five or six thousand years ago, there was "Yangshao culture" 50 miles west of Luoyang, which shows that the matriarchal clan commune system was quite developed at that time. This is the beginning, more and more brilliant.