杭州西湖水生高等植物的恢复与水生生态修复

在过去的50年，西湖一直被富营养化问题所困扰。迄今为止，采用了各种工程措施进行治理，耗资数亿，但收效不明显。为了进一步解决西湖富营养化问题，提出需要用生态方法去解决生态问题，通过生态学手段，恢复、重建高等水生植物带落，增加水生生物多样性，改善西湖水生生态系统的结构和功能，控制藻类来修复西湖水生生态系统。科学地选择先锋种类组合、消除草食性鱼类的影响、合理地控制水位是西湖水生植被恢复过程中的三个重要措施。

The reconstruction of aouatic macrophyte and ecological restoration in the West Lake

West Lake, a small shallow lake, is a famous scenic lake for tourists in China. However, the lake has been suffering from eutrophication with the low transparency year after year. To control its eutrophication, a great deal of funds have been invested and some projects have been organized by the government last twenty years. The effects of these projects were not complete and the eutrophication is still progressing, the new methods and approaches must be developed for further. The problems of ecology should be dealt with ecological way. It will be very important that the reconstruction and restoration of the aquatic vegetation are carried out in this lake. After that, the biodiversity will be increased, the density of algae will be reduced, and the structure and functions of ecological system in the lake may be improved. In Xiaonan bay of this lake, the restoration of the macrophyte had appeared and the ecological function of the macrophyte had been realizing. For the restoration of macrophyte in this lake, there are three important factors: the establishment of the precursor species, the elimination of fish and controlling water level in the lake.