内容提要

本书系一部关于运用净水渔业理念实施浅水湖泊生态修复方面的专著。采用内源性生物操纵手段调控湖水中的氮、磷，以减缓富营养化，防止出现蓝藻暴发产生的危害。

在总结前人研究基础上，针对太湖内湾蠡湖的氮、磷含量居高不下和蓝藻过多的情况，以多项技术集成组装的净水渔业技术，对水环境整治后的蠡湖开展了以渔净水的研究与示范，使原来的劣Ⅴ类水质上升为Ⅲ类水质，将重富营养湖泊修复为中营养湖泊，达到了预期的效果和目的。在实践示范中，通过同步监测水质与水生生物的动态变化、多种方法综合评价水质，证实了鲢、鳙的净水作用。

全书共分6章，从蠡湖及其环境治理、净水渔业技术实施前的蠡湖渔业生态环境、净水渔业技术试验的技术路线和方法、净水渔业技术试验及其效果、净水渔业技术对蠡湖水质的影响、净水渔业技术对蠡湖水生生物群落的优化调控等方面进行纪实性阐述。

本书内容丰富，理论与实践相结合，可供水环境、渔业、生命科学等相关领域的研究人员、大专院校师生和管理人员参考，也可为其他浅水湖泊在生态修复实践中提供思路和参考借鉴。

Synopsis

This book is a monograph on the use of water-purification fishery concept to carry out ecological remediation in shallow lakes. In order to slow down the eutrophication and prevent blue-green algae bloom，endogenous bio-manipulation was used to regulate and control nitrogen and phosphorus in lake water.

On the basis of former research and aiming at the high concentrations of nitrogen，phosphorus，blue-green algae in Lihulake，an inner bay of Taihu Lake，the research and demonstration of water-purification fishery technology which integrated many technologies and used fishery to purify eutrophication water were carried out in Lihu Lake whose water environment had been treated previously. The water quality of Lihu Lake increased from worse than level Ⅴ to level Ⅲ and from heavy eutrophic state to mesotrophic state after carrying out water-purification fishery technology，and the anticipative effects and aims had been reached. The water purification effect had been verified in the practice and demonstration by the way of monitoring water quality，dynamic changes of aquatic organism and using many methods to assess the water quality.

The book is classified into six chapters. The documentary elaboration is carried out as following：Lihu Lake and its environmental treatment，fishery eco-environment of Lihu Lake before carrying out water-purification fishery technology，technical route and method of test，test and effect of water-purification fishery technology，water-purification fishery technology decreasing the nitrogen，phosphorus and trophic level，optimization and regulation of water-purification fishery technology on ecosystem.

The book is rich in content and is reviewed with theory and practice combined. The book can be used by research personnel，teachers and students in colleges and universities and management personnel with the interesting areas of water environment，fishery，life sciences and other related areas，and it also provides ideas for other shallow lakes in the practice of ecological restoration.