Study On A Method Of Environmental Impact Assessment Of Land Use Planning Based On Remote Sensing

Complied to the Law of Environment Impact Assessment, strategic environmental assessment must be done in the course of drawing land use planning up. Evaluating the ecological impact of strategic environmental assessment for the land use planning to the area, judging the science of the planning, and putting forward a measure to the planning, that is very difficult at present. The method of evaluation is the key. But now it is very deficient in China .This text tries to do a method study of environment impact assessment for the land use planning from the angle of environment and economy using the assessing technique of eco-environmental status evaluation and eco-service value. And the land use planning in Hannan area of Wuhan is demonstrated for investigating.Remote sensing is the one of the best technique for researching the large-scale environmental problem. This article uses ERDAS IMAGING software to do the pretreatment for remote image through the techniques of format translation, multi-band image output and image enhancement. And based on the locale investigation and aerial photo analysis, bring up 1200 samples to build classification evaluation signature. Then do unsupervised classification and supervised classification.Based on the detailed space information of land style, do eco-environment and eco-service three period of time actuality ,anticipation and review evaluation——the long-term(2010,2020),forepart (1991).The result of eco-environment evaluation: the eco-environment status indexes of 1991,2004 and 2020 are 37.1,36.9 and 36.6. They arrives at normal lavel and some slow downtrend, but have nothing evident variety. Because of increasing of constructing land, biology abundance index and vegetation cover index are all slowed down.The result of eco-service evaluation: eco-service value in 1991,2004 and 2020 is 0.585 billion,0.754 billion and 1.04 billion. It shows ascending trend. The reason is that the area of wood land is increased by tidying amalgamation of villages.The result of the two method show that controlling the area of construction land and enlarging the area of forest land are all the important measure for guarantying land use planning environment friendliness. And put forward the sustainable-development adjusting advice from angle of the industry developing strategy and all kinds of land layout and scale.The paper is combined the RS technique, eco-environmental evaluation technique, eco-service evaluation with the environment impact assessment of land use planning. And try to analyze and evaluate the land use planning from the two aspects of eco-biology and value based on the RS technique. In the aspect of evaluation method, the article improves the account of the three indexes in technical criterion evaluation index system and offers the innovation case of environment impact assessment of land use planning. The research not only bring foeward a new secientific method for environment impact assessment of land use planning,but also put forward an innovation case.