文献类型：期刊文献

中文题名：察汗淖尔干湖床点尺度非饱和带降水入渗补给研究

英文题名：Study on precipitation recharge in point scale unsaturated zone of dry lake bed of Chahannaoer

作者：孙季珲[1,2,3,4] 于一雷[3,4] 张兵[1,2] 韦欣[3,4,5] 杨洪国[4] 张義[6]

第一作者：孙季珲

机构：[1]天津师范大学天津市水环境与水资源重点实验室,天津300387;[2]天津师范大学地理与环境科学学院,天津300387;[3]中国科学院雄安创新研究院,河北雄安新区071899;[4]中国林业科学研究院生态保护与修复研究所/湿地生态功能与恢复北京市重点实验室,北京100091;[5]防灾科技学院生态环境学院,河北廊坊065201;[6]中化地质矿山总局地质研究院,北京100101

年份：2024

卷号：44

期号：6

起止页码：45-53

中文期刊名：天津师范大学学报（自然科学版）

外文期刊名：Journal of Tianjin Normal University：Natural Science Edition

收录：CSTPCD;;北大核心:【北大核心2023】；

基金：中央级公益性科研院所基本科研业务费专项资金资助(CAFYBB2021YJ001);国家林业和草原局重点课题(2021ZDKT008).

语种：中文

中文关键词：察汗淖尔干湖床;降水入渗补给;稳定同位素;氯离子质量平衡法;非饱和带

外文关键词：dry lake bed of Chahannaoer;precipitation recharge;stable isotope;chloride ion mass balance method;unsatu-rated zone

分类号：P641

摘要：为深入了解半干旱区降水入渗补给的规律,基于张家口市尚义县气象站点降水数据和采样点土壤性质,采用稳定同位素、Mann-Kendall(M-K)趋势检验法和氯离子质量平衡法(CMB)等方法分析察汗淖尔干湖床的降水入渗补给速率.结果表明:①研究区土壤1.4 m深度以上为混合层,土壤水主要运动方式为优先流,土壤含水率变幅较大且呈显著增加趋势;1.4 m深度以下为稳定层,土壤水主要运动方式为活塞流,土壤含水率无显著变化.土壤水氯离子质量浓度随深度增加先显著降低后增加,整体无明显变化.②土壤1.0 m深度处存在2011年的降水入渗补给信号;1.6 m处存在2009年的降水入渗补给信号;3.0 m处存在2006—2007年的降水入渗补给信号.③土壤水剖面平均记录密度约为2.60 a/m,降水入渗补给速率约为0.15~0.19 mm/a,年均降水入渗补给量占多年平均降水量的0.03%~0.05%.
In order to obtain a deeper understanding of the patterns of precipitation recharge in semi-arid areas,based on pre-cipitation data from the meteorological station in Shangyi County,Zhangjiakou and soil properties at sampling points,stable isotope,Mann Kendall(M-K)trend test,and chloride ion mass balance method were used to analyze the rate of precipitation recharge of the dry lake bed of Chahannaoer.The results showed that:①The soil above a depth of 1.4 m was a mixed layer,and the main movement mode of soil water was preferential flow,and the soil moisture content varied greatly and showed a significant increasing trend.The soil below a depth of 1.4 m was the stable layer,and the main movement mode of soil water was piston flow,and there was no significant change in soil moisture content.As the soil depth increase,the mass concentra-tion of chloride ions in soil water first decreased significantly and then increased,with no significant change overall.②There were a precipitation recharge signal from 2011 at a depth of 1.0 m in the soil,a precipitation recharge signal from 2009 at a depth of 1.6 m,and a precipitation recharge signal from 2006 to 2007 at a depth of 3.0 m.③The average recorded density of the soil water profile was about 2.60 a/m,and the rate of precipitation recharge was about 0.15-0.19 mm/a,accounting for 0.03%-0.05%of the average annual precipitation.