Selection and allocation of suitable plants in the water-level-fluctuating zone around the Huangdeng Hydropower Station in the three parallel rivers area
[Background]Vegetation restoration is an effective way to reduce soil erosion in the water-level-fluctuating zone and ensure the normal function of the reservoir.The Three Parallel Rivers area is rich in hydropower resources,but the ecological environment is sensitive and fragile.The study on the selection and configuration of suitable plants in the water-level-fluctuating zone the reservoir of Huangdeng Hydropower Station on the Lancang River can provide a basis for the vegetation restoration of the water-level-fluctuating zone of the Huangdeng Hydropower Station,and also provide a reference for the ecological restoration of thewater-level-fluctuating zone in the three parallel rivers area.[Methods]Taking 2 species of algae,14 herbaceous species and 4 species of trees as the research objects,the experimental area was arranged in the subsidence zone of Huangdeng Hydropower Station and observed for 4 years.[Results]1)Myriophyllum verticillatum,Hydrilla verticillata,Vallisneria natans and Stuckenia pectinata were difficult to survive in the elevation range of 1 605-1 610 m,Cynodon dactylon could survive in the elevation range of 1 610-1 618 m,and seven herbs of Arundo donax'Versicolor',Cyperus involucratus,Canna indica,Acorus calamus,Phragmites australis,C.dactylon and Chrysopogon zizanioides grew well in the elevation range of 1 618-1 620 m,and the plant height,biomass and coverage of A.donax'Versicolor'were the largest.2)At the elevation of 1 615-1 618 m,the survival rates of Salix hybrid,Taxodium distichum var.imbricarium,Pterocarya stenoptera and Taxodium'Zhongshanshan'were 100％,41.67％,36.67％and 16.67％,respectively,and the adaptability was S.hybrid＞T.distichum var.imbricarium＞P.stenoptera＞T.'Zhongshanshan',and S.hybrid is significantly better than the other three trees.3)The plant configuration mode of the subsidence zone of Huangdeng Hydropower Station is as follows:1 586-1 605 m elevation area,it is not recommended to plant plants,1 605-1 615 m elevation is recommended to plant C.dactylon,1615-1 618 m elevation is recommended to plant S.hybrid,M.alba,and C.dactylon,1 618-1 620 m elevation is recommended to plant A.donax'Versicolor',C.involucratus,C.indica,A.calamus,P.australis,C.dactylon,C.zizanioides;and A.donax'Versicolor',C.involucratus,and C.indica is arranged on the outermost side to improve the landscape effect of the subsidence zone.[Conclusions]The suitable plants have good growth characters and good landscape effects after 4 years of planting in the water-level-fluctuating zone around the Huangdeng Hydropower Station.The model can be applied in the water-level-fluctuating zone of the three parallel rivers area.
the three parallel rivers areapower stationthe water-level-fluctuating zoneplantconfigu-ration
万方数据
维普
