湖泊水体富营养化评价的改性灰色局势决策法

南四湖是我国主要的淡水湖泊之一，是山东省重要水源地。该地区自然资源条件优越，具有明显的区位优势，随着本地区能源基地的和社会经济高速发展。在水资源利用和煤炭资源开发中已产生或潜存很多环境问题，本文系统地综述了该地区存在的地下水位下降，水湖泊淤积，地面沉降与塌陷，水土流失和土壤盐渍化等一系列环境问题的状况，成因，发展，并针对性地提出了保护本地区水环境的基本策略。

Improved Grey Situation Decision Making Method for Lake Eutrophicaton Evaluation

Nansihu lake, one of the major freshwater lakes in China, is regarded as important water resources in Shandong Province. With construction of the energy base and the development of social economy, many environmental problems in the utilization of water resources and the exploitation of coal resources have been raised in the area. This paper discusses the condition and causes of formation and development of these problems such as falling of ground water stage, water pollution, lake swamping, surface subsidence, soil and water erosion, soil salinization. In the end, some countermeasures of protecting the water environment of this area are put forward.