A case study on the ecological evaluation of water conservation facilities on the basis of plant diversity

3rd International Conference on Water Resource and Environment

地球科学;生态环境科学

Wu, C.Y.^1 ; Xia, G.J.^1 ; He, T.H.^1 ; Yu, J.^1 ; Qiao, B.^1

Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in North-western China, Ministry of Education, Ningxia University, Yinchuan, Ningxia

750021, China^1

关键词: Carbon and nitrogen;    Class A;    Composite index;    Conservation projects;    Ecological evaluation;    Evaluation systems;    Plant diversity;    Yinchuan plains;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/82/1/012015/pdf
DOI  :  10.1088/1755-1315/82/1/012015

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this experiment, water conservation facilities in the Yinchuan Plains were studied to establish ecological evaluation criterion for water conservation facilities based on plant diversity indexes. Among the tested indexes, the Margalef and the Simpson indexes were found to effectively characterize the ecological degree of water conservation facilities. Natural lake plant diversity has been used to as a metric; the ecological criteria degree of water conservation facilities can be divided into 4 grades. The results showed that the ecological level of the field ditch, primary furrow, and second furrow qualified as class A, which is the highest grade. The branch canal was grade B, which is good. The lateral canal and flood furrow were grade C, which is a medium level. The trunk canal was grade D, which is the poorest. In addition, the results establish an ecologicalization evaluation system based on the plant diversity composite index of the original lake. Metrics such as biomass, carbon and nitrogen fluctuations, temperature, and humidity could be used to comprehensively evaluate the ecologicalization degree of water conservation projects, such as large reservoirs.