干旱区生态环境知识资源中心(Arid): 高寒干旱区降水氢氧稳定同位素组成及其水汽来源:以昆仑山北坡格尔木河流域为例

Arid

	高寒干旱区降水氢氧稳定同位素组成及其水汽来源:以昆仑山北坡格尔木河流域为例
其他题名	Stable hydrogen-oxygen isotope composition and atmospheric moisture sources of precipitation in an arid-alpine region:A case study of the Golmud River Watershed on the north slope of the Kunlun Mountains
	饶文波; 李垚炜; 谭红兵; 李永国; 温川; 张西营
来源期刊	水利学报
ISSN	0559-9350
出版年	2021
卷号	52 期号:9 页码:1116-1125
中文摘要	降水来源是高寒干旱区水文循环研究中的重要内容。本研究以格尔木河流域山区段纳赤台水文站为研究点,收集2019年6-10月的51个降水事件样品,开展了降水氢氧(H-O)稳定同位素组成及其水汽来源研究。结果表明:(1)降水delta~(18)O与delta~2H值变化显著,气温是其变化的主控因素;(2)降水经历了多次蒸发-凝结过程,其同位素值大多落在全球降水线上方;(3)山区降水线方程为delta~2H=7.4*delta~(18)O+13.2,可视为流域降水线方程,为流域水循环研究提供可靠的参考。氘盈余分析揭示了西风环流及局地水汽循环是流域山区降水的主要贡献者。HYSPLIT模拟进一步表明流域山区高空水汽由西风环流携带而来而低空水汽还与内陆水体蒸发有关。该成果有助于深入理解高寒山区水汽循环理论,可为当地水资源管理决策提供科学依据。
英文摘要	The source of precipitation is an important content in the hydrologic study in arid-alpine regions.In this study, 51 precipitation event samples were collected from June to October 2019 at Nachitai of the Golmud River watershed on the northern slope of the Kunlun Mountains,and the stable hydrogen-oxygen isotope composition and atmospheric moisture of precipitation were investigated.The results showed that the delta~(18)O and delta~2H values of precipitation varied greatly and were mainly controlled by air temperature;precipitation experienced multiple evaporation-condensation processes and its stable H-O isotope data mostly fell above the global meteoric water line;and the local meteoric water line was delta~2H=7.4*delta~(18)O+13.2 for the mountainous region of the Golmud River watershed, and may characterize the whole watershed, which provides a good reference for studying the watershed-scale hydrological cycle.The analyses of deuterium excess values revealed that the westerly circulation and local moisture transport were the main contributors to mountainous precipitation in the Golmud River watershed.The HYSPLIT model simulation further showed that atmospheric moisture of high levels was carried by the westerly circulation and atmospheric moisture of low levels were recharged by the inland moisture cycle.The findings are helpful to deeply understand the water cycle in the arid-alpine areas and also may provide a scientific basis for local water resource management.
中文关键词	氢氧稳定同位素组成 ; 大气降水 ; HYSPLIT模拟 ; 水汽来源 ; 高寒干旱流域
英文关键词	stable H-O isotope compositions atmospheric precipitation HYSPLIT model moisture source arid-alpine watershed
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Environmental Sciences & Ecology
CSCD记录号	CSCD:7066276
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377901
作者单位	饶文波, 河海大学地球科学与工程学院, 南京, 江苏 211100, 中国.; 李垚炜, 河海大学地球科学与工程学院, 南京, 江苏 211100, 中国.; 谭红兵, 河海大学地球科学与工程学院, 南京, 江苏 211100, 中国.; 李永国, 青海省水文地质工程地质环境地质调查研究院, 西宁, 青海 810008, 中国.; 温川, 青海省水文水资源测报中心格尔木分中心, 格尔木, 青海 816099, 中国.; 张西营, 中国科学院青海盐湖研究所, 西宁, 青海 810008, 中国.
推荐引用方式 GB/T 7714	饶文波,李垚炜,谭红兵,等. 高寒干旱区降水氢氧稳定同位素组成及其水汽来源:以昆仑山北坡格尔木河流域为例[J],2021,52(9):1116-1125.
APA	饶文波,李垚炜,谭红兵,李永国,温川,&张西营.(2021).高寒干旱区降水氢氧稳定同位素组成及其水汽来源:以昆仑山北坡格尔木河流域为例.水利学报,52(9),1116-1125.
MLA	饶文波,et al."高寒干旱区降水氢氧稳定同位素组成及其水汽来源:以昆仑山北坡格尔木河流域为例".水利学报 52.9(2021):1116-1125.