Abstract:

The implementation of land use planning would have impact on the environment of the planning region.While the positive effect may optimize the regional environment, the negative one may cause serious environmental issues that seriously affect harmonious socioeconomic development.Therefore,the assessment of land use planning impact on ecological environment plays a vital role both in protecting the environment and reducing the negative environmental impact of land use planning.Using PSR model and the ecological security assessment,the assessment indices were picked out based on grid cell.After screening indices through correlation analysis,an evaluation system of the land use planning on ecological environment impacts was constructed.Combined with spatial analysis through GIS,the environmental impact of land use planning at county level was quantitative evaluated.The proposed methods were applied in Yongding county,Hunan Province.After the analysis of the environment status and the main ecological security problems in Yongding County, which threatened the survival and development of economy and human society,the environment evaluation system of the land resource planning in this area was established. The environmental impacts of land use planning were assessed through comparing the environment status index and ecological security index, which are different before and after the land use planning taking effect. Results indicated that most of the area (about 78.19%) would be benefit from the performing of the new general land use planning. At the same time, 60.17% of this area would be in the statues of secure and relative secure, which means a slight improvement in soil and water loss. Enhancing soil and water conservation would still be one of the priorities of the ecological environment protection in Yongding County