土地生态设计方法及其在晋西北土地沙漠化防治上的应用

LAND ECOLOGICAL DESIGN AND ITS APPLICATION IN DESERTIFICATION CONTROL IN THE NORTHWESTERN REGION, SHANXI PROVINCE

本文应用土地生态设计的基本方法，对晋西北风沙区内的沙漠化土地进行了生态功能分类，提出了该区的土地生态设计分室模型；从该区土地沙漠化综合防治的角度出发，划分出四个土地利用方向和生态建设重点有所不同的生态经济区，并对各区的土地利用主要矛盾和发展方向、土地生态建设的重点，沙漠化现状及其防治对策等进行了详细的分析。

Land ecological design is to select and optimize the rational using ways of various land systems based on the basic theory of ecology and land science by using the method of modern systematical engineering. In this paper, the desertified land in the northwestern region, shanxi Province, is reclassified according to the ecological functions by using the basic method of land ecological design. A compartmental model of land ecological design is developed. From a view point of synthetical control of land desertification, the study area is divided into 4 ecological- economic subregions: a. productive subregion including farmland, power stations, economic forest areas, mining areas and other productive land areas; b. consumption subregion including urban and rural residential areas; c. protective subregion including shelter-forests, nature reserves, etc., and d. mixed subregion being consisted of different land units with different functions. The main contraditions and development orientation of land use, the key projects of land ecological construction, the present situation and control countermeasures of desertification, ect. in each subregion are analyzed in detail. The paper discusses the land desertification in the northwestern region, shanxi Province, from a new view point-land ecological design so as to provide a new way for the theoretical analysis and control research of land desertification.