Brief introduction of scenic spots in Luhun Reservoir

Luhun Reservoir is located in Songxian County, Luoyang City, in the middle reaches of the Yi River in the Yellow River Basin. It was built by the state in 1960s, and it is a large reservoir mainly used for flood control. After the completion of the reservoir, it has played an important role in flood control, power generation, irrigation and aquaculture. However, because the resettlement of Luhun Reservoir was carried out during the three-year national natural disaster and the Cultural Revolution, influenced by the planned economic system and the idea of "one university and two universities" at that time, there was no scientific planning for resettlement. After many relocations, especially under the control of the idea of leaving home, the method of falsely reporting cultivated land and retaining more people has caused many problems left over, among which returning immigrants are one of the more prominent problems. Over the years, governments at all levels have taken many measures and invested special funds to solve the production and living difficulties of immigrants, but for various reasons, they have not been well solved and have continued to this day.

The Yellow River system of Luhun Reservoir (Henan) covers an area of 46,800 mu, with an average water depth of 9.50 meters and a maximum water depth of 20.00 meters, with transparency of 1.2 1 cm.

Bottom material: silt.

Ecological characteristics, primary productivity and related indicators

The primary output of Yellow River system, Luhun reservoir system and water area is 4.50g/m2. Daily, the primary output is 3 159kg/m2. In, the fish yield is 1.5kg/m2. Annual F/P0.05, biomass 57.9g/m2, daily P/B0.47, total phosphorus 0. 13mg/L, phosphate 0.28mg/L, organic oxygen consumption 3.35mg/L, transparency 12 1cm. (mg/L)

The output of floating plants is 4.500, the standing stock of floating plants is 5.790, and the dominant species of diatoms and zooplankton is 3.340.

Seasonal variation of phytoplankton biomass and dominant algae (mg/L)

198 1- 1982, spring biomass 0.84, spring dominant algae diatom, summer biomass 2.05, summer dominant algae diatom, autumn biomass 6.66, autumn dominant algae diatom, winter biomass,

Phytoplankton Biomass (mg/L) and Its Composition in Reservoir

The biomass of phytoplankton is 5.790, diatoms account for 76.6%, green algae 4.0%, Chrysophyte 0.4%, dinoflagellate 15.3%, gymnosperms 2. 1%, and cyanobacteria 1.6%.

Zooplankton biomass and seasonal variation (mg/L)

The primary biomass is 0.0 1, rotifer biomass is 1.48, cladocera biomass is 0.84, copepod biomass is 1.0 1, and the total biomass is 3.34.

Nutritional types

Plant yield: rich, plant biomass: rich, plant dominant species: medium, inorganic nitrogen: rich, total nitrogen: rich, inorganic phosphorus: medium, total phosphorus: rich, COD: medium, and water quality is eutrophic.

Density (individual/meter) and biomass (gram/square meter) of zoobenthos.

Name of water area, investigation date: 8 1 ~ 82, benthos: 14, annelids: 3 125/0.72 1, snails: (1.5/0.0/kloc-. Chironomidae larvae: 1075/0.625, other aquatic insects: 1075/0.625, other: 77.5/0.0425, total: 500/10.507, with an average of 250/0.754.