Changing runoff generation in the source area of the Yellow River: Mechanisms, seasonal patterns and trends

doi:10.1016/j.coldregions.2018.06.014

	Changing runoff generation in the source area of the Yellow River: Mechanisms, seasonal patterns and trends
	Wu, Xiaoling 1,2; Zhang, Xin 1; Xiang, Xiaohua 1,2; Zhang, Ke 3,4,5; Jin, Huijun 6; Chen, Xi 1,2; Wang, Chuanhai 1,2; Shao, Quanqin 7; Hua, Wenjuan 1
刊名	COLD REGIONS SCIENCE AND TECHNOLOGY
	2018-11-01
卷号	155 页码:58-68
关键词	Active layer Freeze-thaw Runoff generation Climate change Yellow river
ISSN号	0165-232X
DOI	10.1016/j.coldregions.2018.06.014
通讯作者	Wu, Xiaoling(freebir7237@sina.com)
英文摘要	The hydrological regimes of the major rivers in cold regions of the world have changed remarkably since the 1960s, but the mechanisms underlying these changes have not yet been fully understood. Specifically, changes in freeze-thaw processes can affect the thicknesses of the permafrost layer and active layer, storage capacity for liquid water and subsequent surface runoff. In this study, we investigated the hydrological processes and runoff generation in the Yellow River source (YRS) region, which is located in a permafrost region, over the past four decades using ground observations. The impacts of runoff processes are assessed in terms of the spatiotemporal distributions of precipitation, air temperatures, and soil water dynamics in the active layer. The Mann-Kendall test and correlation analysis were employed to detect the variations in runoff and annual changes in influencing factors. Runoff generation in different periods was influenced by different main factors. In the spring flood and recession flow period (SP_FRP, which ranges from late March to mid-June), soil water storage played an important role in runoff generation. With the increased air temperature and enhanced soil ground thawing process, liquid water storage capacity of the soil increased, and constrained runoff. After the soil was saturated in the summer flood and recession flow period (SU_FRP, which ranges from late June to late October), runoff increased with precipitation. In the dry period (DP, which ranges from early November to Mid-March), little precipitation, high potential evaporation (308 mm) and increased air temperature (0.43 degrees C/decade) caused decreases in snow accumulation and water content. Without a sufficient water supply, river runoff decreased in DP. These results show that precipitation played an important role in runoff generation in SU_FRP. In permafrost regions, the freeze-thaw processes of the active layer of soils, heavy evaporation and the air temperature play primary roles in runoff generation during SP_FRP and DP.
资助项目	National Key R&D Programme of China[2016YFA0601000] ; Fundamental Research Funds for the Central Universities[2018B10914] ; National Natural Scientific Foundation of China[41571130071]
WOS关键词	ACTIVE LAYER ; TIBETAN PLATEAU ; PRECIPITATION CONCENTRATION ; HYDROLOGICAL PROCESSES ; HIGH-LATITUDES ; ENERGY FLUXES ; COASTAL-PLAIN ; CENTRAL-ASIA ; PERMAFROST ; MODEL
WOS研究方向	Engineering ; Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000444514700007
资助机构	National Key R&D Programme of China ; Fundamental Research Funds for the Central Universities ; National Natural Scientific Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/52937]
专题	中国科学院地理科学与资源研究所
通讯作者	Wu, Xiaoling
作者单位	1.Hohai Univ, Coll Hydrol & Water Resource, Nanjing 210098, Jiangsu, Peoples R China 2.Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing 210098, Jiangsu, Peoples R China 3.Univ Oklahoma, Cooperat Inst Mesosacle Meteorol Studies, Norman, OK 73072 USA 4.Univ Oklahoma, Hydrometeorol & Remote Sensing HyDROS Lab, Norman, OK 73072 USA 5.Univ Oklahoma, Sch Civil Engn & Environm Sci, Norman, OK 73072 USA 6.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soils Engn, Lanzhou 730000, Gansu, Peoples R China 7.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Wu, Xiaoling,Zhang, Xin,Xiang, Xiaohua,et al. Changing runoff generation in the source area of the Yellow River: Mechanisms, seasonal patterns and trends[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2018,155:58-68.
APA	Wu, Xiaoling.,Zhang, Xin.,Xiang, Xiaohua.,Zhang, Ke.,Jin, Huijun.,...&Hua, Wenjuan.(2018).Changing runoff generation in the source area of the Yellow River: Mechanisms, seasonal patterns and trends.COLD REGIONS SCIENCE AND TECHNOLOGY,155,58-68.
MLA	Wu, Xiaoling,et al."Changing runoff generation in the source area of the Yellow River: Mechanisms, seasonal patterns and trends".COLD REGIONS SCIENCE AND TECHNOLOGY 155(2018):58-68.