太湖流域水岸生态防护林体系建设技术与对策

太湖水体富营养化引发的蓝藻暴发与饮用水源地污染引起了学术界和社会各界的广泛关注。目前,环太湖生态防护林带建设已作为重要的生态修复工程加以实施。笔者综合分析了太湖水质下降的主要原因及面源污染物来源;综述了国内外有关水岸生态系统结构和功能方面的研究进展,包括生态防护林带控制农业面源污染的机理及影响生态防护林带生态效能的因素等;探讨了水岸带类型、分区与立地条件的划分依据,水岸生态防护林带营建宽度的确定方法,适宜植物种类选择与配置技术,并提出了建立有效的生态补偿机制等相应对策。

The construction techniques and strategies of riparian shelterbelt systems surrounding Taihu Lake watershed

More and more attentions have been paid by some scientists and even the whole society to blue algae blooming and drinking water pollution caused by water body eutrophication in Taihu Lake.At present,ecological forest shelterbelts surrounding Taihu Lake watershed having been established as an important ecological restoration program.In this paper,authors have analyzed the main causes of water quality decline and non-point pollutant sources.Some research progress has been summarized about the structure and function of riparian ecosystems,including the mechanisms for the shelterbelts to control and alleviate agricultural non-point pollutants and factors to influence their ecological effects.Furthermore,some key methods and techniques have been applied in the classification of riparian ecosystem types,functional zones and site conditions,the appropriate width of riparian shelterbelts and the selection of plant species and their spacial allocation.Finally,some suggestions have also been given on how to establish available ecological measurements and economic policies as a reference for the construction and sustainable management of Taihu riparian shelterbelts in future.