Open AccessResearch on Comprehensive Evaluation of Water Ecological Environment in Small Basin
Author(s) -
Hua Gao,
Rui Chu
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/647/1/012212
Subject(s) - water quality , drainage basin , environmental science , watershed , habitat , sampling (signal processing) , structural basin , pollution , ecology , hydrology (agriculture) , water resource management , aquatic ecosystem , environmental monitoring , environmental resource management , geography , environmental engineering , paleontology , cartography , geotechnical engineering , filter (signal processing) , machine learning , computer science , engineering , computer vision , biology
In order to evaluate the water ecological environment quality of small basin and realize scientific management and control of small basin, 15 sampling spots were set up on the small basin of Nanhe River of Qionglai city, 11 indexes were selected from three aspects of water environmental quality, aquatic ecology and aquatic habitat for each sampling spot, and the grey relational analysis (GRA) was used to comprehensively evaluate the water ecological environment quality in the small watershed of Nanhe River of Qionglai city. The results show that it is feasible to use GRA to comprehensively evaluate the regional water ecological environment. The water ecological environment of wenjing River, Baimo River and Dengjiang River is in good condition, and their control standards should be relatively improved. The water ecological environment of the five reaches of Xiaonan River, Shitou River, Pujiang River, Inclined River and the lower reaches of Nanhe River is in poor condition, which requires priority control. Pollution prevention and control measures should be considered comprehensively in combination with the ecological environmental pressure borne by the reach.