周调节水库库周消落带治理试验研究OACSTPCD

After the operation of hydropower stations,the reservoir scheduling will cause water level fluctuation,which will generate a subsidence zone around the reservoir.The habitats in the water-level-fluctuation zone,especially weekly regulation reservoirs,are difficult to manage because of the frequent switching between water and land,which makes it difficult to form stable biological communities.This study takes Miaowei Hydropower Station as a case study,suitable water-level-fluctuation zones are selected to carry out engineering tests,and the observations are conducted after the tests.It is concluded that the relevant range of suitable water-level-fluctuation zone is within the range of one meter variation of the reservoir's normal water level,and the plant species that are resistant to flooding include Salix cavaleriei Levl,Salix matsudana Koidzumi,Taxodium distichum,Acorus calamus,Phragmites australis and Cynodon dactylon.The treatment of water-level-fluctuation zone improves the diversity of habitats in the water-level-fluctuation zone,increases the heterogeneity of the landscape of water-level-fluctuation zone,and ultimately increases the ecosystem diversity and stability of water-level-fluctuation zone.