黄土残塬沟壑区土地开发适宜性评价方法研究

以发展经济为准绳，利用生物措施，开发土地资源，是有效地控制和改善黄土残塬沟壑区日益恶化的生态环境的根本保证。本文针对如何合理地利用农作物、果树、林木和牧草开发土地资源问题，提出了土地开发的适宜性评价方法，并以土地调查的小斑为单元，选用了原土地利用类型、坡度、坡向和海拔高程４个指标，对地处这一地区且作为国家＂八五＂重点攻关项目的隰县试验区的土地开发适宜性进行了评价，经初步开发实施，已收到了显著效果。

STUDY ON THE METHOD OF SUITABILITY RATING FOR LAND DEVELOPMENT IN THE RESIDUAL LOESS PLATFORM REGION

To efficiently control and improve the deteriorating ecological environment in the residual loess platform region we should develop the land resources on the basis of economics.This paper provides a method of evaluating the suitability of land development to deal with the problems of developing land resources. First, from various environmental factors four of them are picked out. They are land types, slope, slope aspect and elevation, which can stand for the difference among land facets. Then by using the method the suitability 644 land facets have been evaluated in the residual loess platform region in Xixian county of Shanxi province. This serves as an important sample region for fulfilling the Eighth Five-Year Plan of the state. It has proved that the actual effect is good.