陇南市土地利用规划环境影响评价

Assessment about the Land Use Planning on Environment in Longnan City

以甘肃省陇南市的土地利用总体规划修编为例,结合环境影响评价的技术指导原则,对土地利用规划环境影响评价程序、环境影响识别以及指标体系的建立等问题进行了探讨,建立了一套根据环境影响识别,并结合陇南市的具体情况确定的指标体系,划分为3个层次,即目标层A、准则层B和指标层C,其中指标层共包括20个评价因子,在此基础上采用改进的熵值法确定了各指标的权重,为土地利用规划的环境影响评价工作提供思路。

The assessment about the impact of holistic land use planning on environment is of great significance for improving government＇s scientific decision-making. The related research abroad has been conducted for almost 30 years,but it is less in China. Starting from the improvement of the Holistic Land Use Planning in Longnan City,Gansu Province,in this paper the objectives of land use planning are researched,and the present situation of land use in Longnan City is analyzed. Moreover,the areas of various land use types in Longnan City are predicted by applying the gray model forecasting method,trend extrapolation and average growth rate,on which a comment of the implementation results of this Holistic Land Use Planning is made,and some problems,such as the procedure of environmental impact assessment and the development of environmental impact identification and index system,are discussed. An index system is developed for the environmental impact assessment according to the environmen-tal impact identification and the present situation in Longnan City. The index system is divided into three hierar-chies,i. e. the chief target hierarchy A,standard hierarchy B and indicator hierarchy C. There are 20 assessment factors in the indicator hierarchy. In the light of which,it is attempted to calculate the weights of the indexes and provide a method for the further research work of environmental impact assessment. The result shows that there is a positive effect of the Holistic Land Use Planning on the holistic ecological environment in Longnan City,which is helpful for the holistic objectives of sustainable land use and environmental protection in Longnan City.