鄱阳湖区环境演变与生态安全对策研究

Countermeasures for the Environment Change and the Ecological Security of Poyang Lake District

鄱阳湖在历史上的演变经历了一个从无到有,从小到大再由大到小的变迁过程。近100年来,由于人类活动的加剧,引起长江上游和赣江、抚河、信江、饶河、修河五河流域森林植被的破坏,水土流失现象不断加重,大量泥沙入湖淤积,导致湖底不断抬升,湖容进一步缩减。鄱阳湖区环境的退化主要源于流域生态系统的失衡,因此,必须加强流域生态安全体系建设,实现湖区可持续发展。

The Poyang Lake has gone through a transition from small to large and from large into small in the history of evolution.In the last 100 years,owing to the intensification of human activities,which have caused the destruction of forest vegetation in the upstream of the Yangtze River and the Gan-River,Fu-River,Xin-River,Rao-River,Xiu-River,soil erosion has been increasing.A large number of sediment has entered the lake,resulting in its bed uplift and volume reduction.The environmental degradation of the Poyang Lake is mainly the result of the imbalance in the ecosystem.Therefore,we must strengthen the construction of watershed ecological security system to realize sustainable development of the lake district.