干旱区研究2017，Vol.34Issue(6)：1271-1277,7.DOI:10.13866/j.azr.2017.06.08
准噶尔盆地南缘土壤水运移特征及其补给来源识别
Identification of Soil Water Migration and Recharge Sources in The Southern Marginal Zone of the Junggar Basin, China
摘要
Abstract
Soil water is the basis of all terrestrial plants in desert area.Investigation on the migration patterns of soil water is necessary for identifying the recharge sources of soil water and for the ecological regeneration in desert area.In this paper,the origin and migration patterns of soil water in a desert area in the southern marginal zone ofthe Junggar Basin were investigated based on measuring soil moisture content,stable isotopes (δD and δ18O) of soil water and soluble salt ions.The results indicated that the vertical profiles of stable isotopes,water content and soluble salt ions of soil water were in a cyclic variation.The C1-composition in soil was positively correlated to soil moisture content.The influencing depth of evaporation was 0-1.6 m;soil water in a deep range of 1.6-8.0 m moved downward,and soil water below 8.0 m was influenced by groundwater.The vertical variations of stable isotopes and Cl-composition in soil water indicated that soil water originated from precipitation in desert area.The low values of Cl-composition corresponded to the depleted values of δD and δ18O;δD of soil water varied from -124.10‰ to-97.39‰,which suggested that soil water originated from precipitation or snow melt winter.关键词
土壤水/稳定同位素/运移规律/补给来源/准噶尔盆地Key words
soil water/stable isotope/migration pattern/recharge source/Junggar Basin引用本文复制引用
孙芳强,尹立河,马洪云,张俊,王晓勇,董佳秋,贺帅军..准噶尔盆地南缘土壤水运移特征及其补给来源识别[J].干旱区研究,2017,34(6):1271-1277,7.基金项目
国土资源部公益性行业科研专项(201511047) （201511047）
