徐存东,刘子金,朱兴林,李欣达,黄嵩,李智睿,赵志宏

• 1:华北水利水电大学水利学院
• 2:浙江省农村水利水电资源配置与调控关键技术重点实验室
• 3:河南省水工结构安全工程技术研究中心

摘要(Abstract)：

为定量描述干旱区人工绿洲土壤盐渍化风险等级及其空间分布特征。本文以甘肃省景泰川电力提灌灌区为研究对象。通过室外数据收集、室内试验及相关数据分析,选取表层土壤含盐量为生态终点,以表层土壤电导率、土壤含盐量、土壤电导率、地下水埋深、地下水矿化度、地表灌水量、年降水量、年蒸发量、海拔、坡度及土地利用类型为比较序列,引入灰色系统理论结合Pearson相关分析法、空间遥感技术及GIS技术构建了盐渍化风险灰色评估模型,对研究区土壤盐渍化风险进行了定量评估。结果表明:研究区内盐渍化风险总值F介于0.072～0.784之间,各风险等级具有明显的区域性,区域整体风险等级处于1、2级,占比55.53%。高风险区(4级与5级风险)主要集中分布在区域东部的封闭型水文地质单元内,占比28.68%。该结果可为灌区后期土壤盐渍化防控治理提供科学指导,也可为同类干旱区人工绿洲实现水土资源可持续发展提供参考依据。

关键词(KeyWords)： 土壤盐渍化;风险评价;灰色评估;景电灌区;GIS

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51579102);; 河南省高校科技创新团队支持计划(19IRTSTHN030);; 中原科技创新领军人才支持计划(204200510048)

作者(Author): 徐存东,刘子金,朱兴林,李欣达,黄嵩,李智睿,赵志宏

DOI: 10.13928/j.cnki.wrahe.2021.06.016

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