袁磊,吴庭雯,韩双宝,张秋霞,李甫成.内蒙古高原内流区土壤水溶盐空间变异特征及其影响因素[J].西北地质,2021,54(4):192-198 YUAN Lei,WU Tingwen,HAN Shuangbao,ZHANG Qiuxia,LI Fucheng.Spatial Variability and Influencing Factors of Soil Water-Soluble Salt in Inner Mongolia Plateau[J].Northwestern Geology,2021,54(4):192-198
内蒙古高原内流区土壤水溶盐空间变异特征及其影响因素
Spatial Variability and Influencing Factors of Soil Water-Soluble Salt in Inner Mongolia Plateau
投稿时间:2021-01-06  修订日期:2021-06-10
DOI:10.19751/j.cnki.61-1149/p.2021.04.015
中文关键词:  内蒙古高原东部;内流区;土壤水溶盐;空间变异;生态环境
英文关键词:the eastern Inner Mongolia Plateau;inner river;soil water-soluble salt;spatial variability;ecological environment
基金项目:中国地质调查局地质调查项目“渭河流域水文地质调查”(DD20190333),自然资源专项调查项目子项目“黄河流域地下水资源评价成果集成”(20200911539)。
作者单位E-mail
袁磊 中国地质调查局水文地质环境地质调查中心, 河北 保定 071051
中国地质调查局地下水勘查与开发工程研究中心, 河北 保定 071051 
 
吴庭雯 中国地质调查局水文地质环境地质调查中心, 河北 保定 071051
中国地质调查局地下水勘查与开发工程研究中心, 河北 保定 071051 
 
韩双宝 中国地质调查局水文地质环境地质调查中心, 河北 保定 071051
中国地质调查局地下水勘查与开发工程研究中心, 河北 保定 071051 
 
张秋霞 中国地质调查局水文地质环境地质调查中心, 河北 保定 071051 zhangqiuxia@mail.cgs.gov.cn 
李甫成 中国地质调查局水文地质环境地质调查中心, 河北 保定 071051
中国地质调查局地下水勘查与开发工程研究中心, 河北 保定 071051 
 
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中文摘要:
      内蒙古高原东部处于中国二三级阶梯和半干旱、半湿润区的过渡区。近20年来,农业的快速发展显著改变了流域的地下水循环和土壤积盐条件。笔者选取安固里淖小流域为对象,基于多元统计学对流域土壤水溶盐空间分布特征、影响因素和生态环境变化进行了分析。结果表明:研究区土壤水溶盐阴阳离子以Cl-和Na+为主,处于土壤积盐的早期阶段;多数土壤水溶盐空间变异较为强烈,特别是溶解度高、迁移性强的Na+、Cl-、SO42-、CO32-沿地下水流向有明显的积聚效应,Na+、Cl-、SO42-贡献了全盐量约60%的含量;土壤积盐易发生于地下水位埋深小于1m、地下水矿化度大于1g/L、地下水水力梯度小于3×10-4的区域;受流域径流区地下水超采与农业灌溉影响,排泄区出现了湖淖干涸和生态环境退化问题,同时径流区有土壤次生盐渍化的风险。
英文摘要:
      The eastern Inner Mongolia Plateau is the nation's transitional area of different terrains, from semi-arid to semi humid. The rapid development of agriculture in the past two decades has significantly changed the groundwater circulation and soil salt accumulation conditions of the basin. This study analyzed the spatial distribution, influencing factors and ecological changes of soil water-soluble salt in the watershed of Angulinao based on the multivariate statistics. The results show that Cl- and Na+ are the main anions and cations of soil water-soluble salts in the study area, which is in the early stage of soil salt accumulation. Most of the soil water-soluble salts have intense spatial variation, especially na+, cl-, so42-, co32- with high solubility and migration have obvious accumulation effect along the groundwater flow direction. Na+, Cl-, SO42- contribute about 60% of the total salt content. The data show that soil salinization frequently occurs in the area where the groundwater depth is less than 1m, the groundwater salinity is greater than1g/L, and the groundwater hydraulic gradient is less than 3×10-4. In the drainage area, the lakes dry up and the ecological environment degenerates because of the groundwater overdraft and the agricultural irrigation in the runoff area. Besides, the runoff area has the risk of secondary soil salinization.
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