洞庭湖演变对生态环境的影响初探

PRELIMINARY STUDY ON THE INFLUENCE OF DONGTING LAKE CHANGE ON THE ECOLOGICAL ENVIRONMENT

从洞庭湖演变历史的回顾入手，讨论了洞庭湖演变对湖区生态环境的影响．认为湖体演变带来了诸如湖泊温暖效应降低、调蓄功能减退、洪涝灾害频繁、土壤潜育化严重．血吸虫病流行，以及生物资源破坏等一系列生态环境问题。强调了开展湖区生态环境监测和研究的重要性，并提出兴建长江流域生物工程。

This paper discussed the influence of Dongting Lake change on the ecological enviroment based on review of change history,It was emphasized that the lake body chang is causing a series of ecological enviromental problems,for example,decline of warm effect,flood shift and storage functions,increase of flood and water logging damages, soil gleying serious, prevalence of snail fever and damage of biological resources and so on. The paper proposed the importance of ecological monitoring and research on the Dongting Lake area,and suggested that the Yangtze River valley biological engineering be establish ed.