富营养化浅水湖泊稳态转换理论与生态恢复探讨

从清水稳态与浊水稳态转换的过程、稳态阈值、稳态恢复力等方面介绍了浅水湖泊的稳态转换理论,总结了浊水稳态与清水稳态恢复力的影响因素,以及清水稳态与浊水稳态相互转换的驱动力,分析了富营养化引起的植物群落演替和稳态转换的过程.根据稳态转换理论和太湖五里湖的生态恢复实践,提出以改善生境条件为稳态转换驱动力进行生态恢复,并阐述了降低营养盐浓度、提高水体透明度、清除某些鱼类、改善基底、调节水位、软围隔消浪等生境改善措施. 

Regime Shift Theory and Ecological Restoration Discussion in Eutrophic Shallow Lakes

Regime shift theory of shallow lakes was presented about several aspects of shift process, stable threshold and stable resilience between stable state of clear water and turbid water. Influence factors for resilience and regime shift power were summarized in stable state of clear water and turbid water. The succession of aquatic plants community and regime shift process by lake eutrophication were analyzed. According to regime shift theory and ecological restoration practices in Wulihu bay of lake Taihu, it was brought forward that regime shift power of ecological restoration is to improve habitat condition. Finally, the improving habitat measures was expatiated on reducing nutrient concentration, enhancing water clarity, cleanup of some fish, reforming bottom environment, controlling water level, and decreasing wave by enclosure, etc.