Exploitation of the Lakeshore Districts under the Guidance of Healthy Lake Concept——The Case of the Wutong Lake Eco-city Project

On the basis of the concept of＂lake ecosystem health＂, the paper proposes that the planning and development of lakeside regions shall be oriented towards the core target of preserving ＂healthy lake＂ and all the construction work in lakeside regions shall be conducted within the ecosystem carrying capacity limits that the lakes can withstand. To achieve this core target, the paper first identifies main indicators describing healthy lake ecosystem and defines the external factors that can influence the health of lake eco-system. Then based on this, two kinds of urban planning methods are proposed to maintain the stability of lake eco-system health through controlling the external factors that can affect the health of lake eco-system. The first is to propose controlling factors in urban planning, such as division of ecological sensitive zones, controlling the development intensity, population capacity and types of industry in the lakeside regions and the second is to construct a monitoring and early warning system for lake eco-system health. The theories and methods mentioned in this paper have been applied to the planning of Wuhan Wutong Lake eco-city.

Maintaining healthy rivers and lakes through water diversion from Yangtze River to Taihu Lake in Taihu Basin

On the basis of the Taihu water resources assessment, an analysis of the importance and rationality of the water diversion from the Yangtz,e River to Taihu Lake in solving the water problem and establishing a harmonious eco-environment in the Taihu Basin is performed. The water quantity and water quality conjunctive dispatching ＇decisi＂ofi-makifig support system, which ensures flood control, water supply and eco-aimed dispatching, is built by combining the water diversion with flood control dispatching and strengthening water resources monitoring and forecasting. With the practice and effect assessment, measures such as setting the -integrated basin management format, further developing water diversion and improving the hydraulic engineering projects system and water monitoring system are proposed in order to maintain healthy rivers and guarantee the development of the economy and society in the Taihu Basin.

Research on the Synthetic Appraisal Index System of Lake Health

[Objective ] The study aimed at assessing the state of lake health. [ Method] Based on the concept of ＂healthy lakes＂ analyzed deeply, the fuzzy integrated evaluation was used to establish the evaluation index system of lake health, and the analytic hierarchy process （AHP） com- bined with expert evaluation method was used to determine the weight of each indicator. Afterwards, the health state of three typical lakes （ San- baidang, Beimayang and Qiaobeidang） in Wujiang City were evaluated by the system, and the measures to develop and protect the lakes were put forward finally. E Resultl The assessment results showed that Sanbaidang and Beimayang were in basic health, while Qiaobeidang was in sub- health. The indicator system and assessment method are suitable for the rivers in eastern plains of China.[ Conclusion] The research could provide scientific references for the development, protection and restoration of lakes.