小流域水环境管理——以宜兴湖滏镇为例

 为了进行小流域水环境管理研究,使用SWAT模型对以面源输出为主的宜兴市湖滏流域进行研究.从社会经济发展与水环境的关系出发,耦合土地演化模型和水环境模拟模型并提出管理建议.首先,使用实测数据对SWAT模型进行了验证,确定其有效性;其后,计算了区内污染物输出水平及各污染源的贡献,并依据模拟结果提出了具体管理建议;再后,在GIS技术的支持下,使用马尔科夫链模型对土地覆被的演化进行模拟;最后,耦合两大模型对社会经济发展造成的水环境影响进行研究,预测了可能的污染物输出,并评价社会经济发展的影响.

Management of water environment in small watershed with Hufu town of Yixing city as example

In order to study the management of water environment in small watershed, the SWAT model is used to study Hufu watershed of Yixing city where the non-point output predominates. From the relation between social economic development and water environment, the studies couple up the model of land evolution and the water environment simulated model to put forward suggestions of management. At first, the field data are used to validate the SWAT model for determining its efficiency. Then the total output level of pollutants in the area and the contribution of each pollution source are calculated; and according to simulating outcome, concrete suggestions are put forward. Then supported with GIS technique, the MARCOV model is used to simulate the evolution of land cover. In the end, these two models are coupled up to study the influence of social economic development on water environment. The possible output of pollutants are predicted and the influence of social economic development is evaluated.