层次分析法在新疆平原灌区土壤盐渍化研究中的应用

本文结合新疆平原灌区土壤盐渍化形成、治理以及现状,利用层次分析法,探讨了灌区内部土壤盐渍化的发生原因和治理措施的有效性。结果表明:干旱荒漠化气候和土壤历史积留盐分是灌区内土壤盐渍化的主导因子,贡献率达69.3%;地下水水位过高是引起土壤盐渍化的重要原因,贡献率11.1%;不完善的排水系统和不合理的灌溉方式也是土壤盐渍化的重要因素。各个治理措施组合权重的分配格局相对均衡,其中建立现代化的排水系统和通过平整土地、植树造林治理土壤盐渍化的效益较高,组合权重达31%。层次分析法可为灌区土地资源的管理、土壤盐渍化的治理提供定量依据。

Application of Analytic Hierarchy Process on the Soil Salinization in Irrigation Areas of Xinjiang Plain

oil salinization is serious in the irrigation areas of Xinjiang.According to the formation,restoring history and actuality of soil salinization,the analytic hierarchy process was adopted for analyzing the causes of soil salinization and evaluating the efficiency of different restoring measures.The results showed that the arid desert climate and soil accumulation salt were the main causes of soil salinization their contribution was of 69.3%.The groundwater level was an important reason for soil salinization its contribution was of 11.1%.The incomplete drainage system and unreasonable irrigation mode and system were also important factors.The integrated weight values reflect the integrated effects of restoring measures on different causes of soil salinization.The distribution pattern of integrated weight value of different restoring measures was equilibrator.Establishing modern drainage system,preparing land and planting trees were better than other measures,their integrated weight value was of 31%.The study showed that the AHP could provide meaningful data form land management,preventing soil salinization,restoring salinization and land optimal utilization as well.