文章摘要
李平平,王晓丹,陈海龙.甘肃苏干湖湿地土壤盐渍化、地下水位埋深及其对生态环境的影响[J].矿产勘查,2020,11(11):2555-2560
甘肃苏干湖湿地土壤盐渍化、地下水位埋深及其对生态环境的影响
Soil salinization, groundwater table depth in Suganhu wetland, Gansu Province and their impacts on ecological environment
投稿时间:2020-05-09  
DOI:
中文关键词: 土壤盐渍化  包气带岩性  地下水埋深  潜水蒸发  生态环境  苏干湖湿地  甘肃
英文关键词: soil salinization, lithology of aeration zone, groundwater depth, phreatic evaporation, ecological environment, Suganhu wetland, Gansu Province
基金项目:
作者单位
李平平 甘肃省地下水工程及地热资源重点实验室,甘肃省地质环境监测院,甘肃 兰州 730050 
王晓丹 甘肃省地质矿产勘查开发局水文地质工程地质勘察院, 甘肃 张掖 734000 
陈海龙 甘肃省地下水工程及地热资源重点实验室,甘肃省地质环境监测院,甘肃 兰州 730050 
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中文摘要:
      苏干湖湿地位于甘肃省苏干湖盆地西部,属典型的内陆河干旱性气候区,强烈的潜水蒸发加快了盐分在土壤中的移动和积累。分析结果表明,土壤盐渍化与包气带岩性和地下水位有密切关系,非盐渍土-中盐渍土包气带岩性单一,重盐渍土和特重盐渍土包气带岩性为双层结构,土壤盐渍化与包气带岩性中的颗粒大小有关。地下水位埋深在0.5~1.0 m时,土壤盐渍化最严重。如果研究区东侧补给量继续呈增加趋势,盐渍化土壤在中盐土区、重盐土区、特重盐土区面积有扩大趋势。提出了改善湿地盐渍化程度的方法。为“引哈济党”调水工程环境影响评价以及规模论证和调水方案设计提供一定的理论依据,对地下水浅埋区的盐碱地改良和土壤次生盐碱化防治提供科学依据。
英文摘要:
      The Sugan Lake Wetland is located in the western part of the Sugan Lake Basin, which is a typical arid Inland river basin. The movement and accumulation of salt in the soil is accelerated by strong evaporation from phreatic water. Research indicates, the relationship between soil salinization and lithologic character of aeration zone and groundwater depth is close.The lithologic character of aeration zone is single in non-saline and medium saline soil. Iithologic character of aeration zone is a double-layered structure in heavily saline soils and heavy saline soils. Soil salinity is related to particle size in lithology of aerated zone. When the groundwater level is buried at 0.5-1.0 m, soil salinization is the most serious. If the replenishment on the east side of the study area continues to increase.The area of salinized soil in the medium-salinous soil area, heavy saline soil area, and heavy saline soil area will expand. This paper proposes methods to improve the salinity of wetlands. Provide theoretical basis for the environmental impact assessment, scale demonstration and design of water diversion schemes for the Yinhajidang Project. At the same time, it provides a scientific basis for the improvement of saline-alkali land and the control of secondary soil salinization in shallow groundwater.
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