ECOLOGICAL EVALUATION FOR LAND CONSOLIDATION IN WESTERN CHINA——A CASE STUDY OF JIUQUAN
以甘肃酒泉为例，选取坡度、地下水位、土壤盐渍化和有机质等因子，利用GIS进行土地整理的生态评价，并根据分值提出耕地保护、林地开发等对策。
To resolve the land use issues and realize sustainable land use in Western China, carrying out land consolidation (LC) is essential. Combining with the characteristics of ecological environment and aiming at the practical problems will be encountered in the process of conducting LC, Jiuquan city in Cansu province is taken as an example to study ecological evaluation for LC. Basing on geographical information system (GIS), some factors such as slope degree, water table height, soil salinization situation and soil organic matter content are chosen to carry out evaluation. Henceforth, corresponding countermeasures are put forward according to the evaluation result. Cultivated land with values ranging from 80 to 100 should be classified as protected area of basic agricultural land, its consolidation measures would be improving its irrigation works and crop quality further; artificial woodland with the same values could be planted fruit trees and developed special fruit products of locality; and unused land with corresponding values could be reserved resources of cultivated land for reasonable development. The influencing factors of land with values ranging from 65 to 80 are water table height and soil salinization situation, that of land with values ranging from 50 to 65 are slope degree, water table height and soil organic matter content, and that of land with values less than 50 are slope degree and soil salinization situation.