易贡湖生态环境状况分析及治理措施初步研究

摘要

Due to the break of landslide deposit,the water surface of Yigong Lake shrank greatly,resulting in land desertifica-tion of lake area,wet land system deterioration and the destruction of eco -environment,which affected the local economic devel-opment.Based on the interpretation results of satellite images before and after the break,we analyze the eco -environment situa-tions and eco -environment succession law by Evaluation Index System of Ecological Environment Condition.The results show that the eco -environment is worsening year by year,and the reverse succession of eco -environment is accelerating.To inhibit the reverse succession trend,building a dam at the outlet of Yingong Lake is put forward to raise the water level of the Lake,re-store the lake ecology,and promote the positive succession of the lake ecology.%受滑坡堆积体溃决影响，易贡湖湖区水面大量萎缩，湖区土地沙化、湿地系统退化、水生生态环境遭到破坏，影响了当地的经济发展。采用生态环境状况评价指标体系法，依据易贡湖溃决前后的卫片解译成果，对易贡湖溃决前后湖区生态环境状况和生态环境演替规律进行了分析。分析结果表明，湖区生态环境逐年变差，逆向演替加速。为遏制易贡湖溃生态环境逆向演替趋势，初步提出了在湖口筑坝的工程措施，以抬高湖水位，恢复易贡湖生态，推动湖区生态系统正向演替。