洞庭湖演变对农业生态环境的影响

EFFECTS OF DONGTING LAKE EVOLUTION ON THE AGRO ECOLOGICAL ENVIRONMENT AND RELEVANT COUNTERMEASURES

从洞庭湖演变历史的回顾入手，讨论了洞庭湖演变对湖区农业生态环境的影响，认为湖体演变带来了诸如湖泊温暖效应降低、洪涝灾害频繁、土壤潜育化严重、血吸虫病流行以及水产资源破坏等一系列生态环境问题，并提出了保护和改善湖区农业生态环境的对策与措施。

This paper discusses the effects of the evolution of Dongting Lake on the agro ecological environment based on review of the lake′s history.It is emphasized that the lake body change has been causing a series of ecological environmental problems,such as the declining of the lake′s warming effect,the increasing of flood and waterlogging damages,the inducing of soil gleying,the prevalence of schistosomiasis,the detrimental effects on aquatic resources and so on.The author puts forward the relevant countermeasures for protecting and improving agro ecological environment in the Dongting Lake area.