干旱区生态环境知识资源中心(Arid): A comprehensive assessment framework for attributing trends in streamflow and groundwater storage to climatic and anthropogenic changes: A case study in the typical semi-arid catchments of southern India

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DOI	10.1002/hyp.14305
	A comprehensive assessment framework for attributing trends in streamflow and groundwater storage to climatic and anthropogenic changes: A case study in the typical semi-arid catchments of southern India
	Nune, Rajesh; George, Biju A.; Western, Andrew W.; Garg, Kaushal K.; Dixit, Sreenath; Ragab, Ragab
通讯作者	Nune, R (corresponding author), Int Crops Res Inst Semi Arid Trop, ICRISAT Dev Ctr IDC, Patancheru 502324, Telangana, India.
来源期刊	HYDROLOGICAL PROCESSES
ISSN	0885-6087
EISSN	1099-1085
出版年	2021
卷号	35 期号:8
英文摘要	The clearest signs of hydrologic change can be observed from the trends in streamflow and groundwater levels in a catchment. During 1980-2007, significant declines in streamflow (-3.03 mm/year) and groundwater levels (-0.22 m/year) were observed in Himayat Sagar (HS) catchment, India. We examined the degree to which hydrologic changes observed in the HS catchment can be attributed to various internal and external drivers of change (climatic and anthropogenic changes). This study used an investigative approach to attribute hydrologic changes. First, it involves to develop a model and test its ability to predict hydrologic trends in a catchment that has undergone significant changes. Second, it examines the relative importance of different causes of change on the hydrologic response. The analysis was carried out using Modified Soil and Water Assessment Tool (SWAT), a semi-distributed rainfall-runoff model coupled with a lumped groundwater model for each sub- catchment. The model results indicated that the decline in potential evapotranspiration (PET) appears to be partially offset by a significant response to changes in rainfall. Measures that enhance recharge, such as watershed hydrological structures, have had limited success in terms of reducing impacts on the catchment-scale water balance. Groundwater storage has declined at a rate of 5 mm/y due to impact of land use changes and this was replaced by a net addition of 2 mm/y by hydrological structures. The impact of land use change on streamflow is an order of magnitude larger than the impact of hydrological structures and about is 2.5 times higher in terms of groundwater impact. Model results indicate that both exogenous and endogenous changes can have large impacts on catchment hydrology and should be considered together. The proposed comprehensive framework and approach demonstrated here is valuable in attributing trends in streamflow and groundwater levels to catchment climatic and anthropogenic changes.
英文关键词	climate and anthropogenic changes coupled catchment model potential evapotranspiration decline streamflow and groundwater trends watershed development
类型	Article
语种	英语
开放获取类型	Green Accepted
收录类别	SCI-E
WOS记录号	WOS:000691011400013
WOS关键词	LAND-USE CHANGES ; RIVER-BASIN ; WATER AVAILABILITY ; IMPACT ; MANAGEMENT ; VARIABILITY ; HYDROLOGY ; YELLOW ; RUNOFF ; MODEL
WOS类目	Water Resources
WOS研究方向	Water Resources
来源机构	International Crops Research Institute for the Semi-Arid Tropics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368539
作者单位	[Nune, Rajesh; George, Biju A.; Western, Andrew W.] Univ Melbourne, Dept Infrastruct Engn, Melbourne, Vic, Australia; [Nune, Rajesh; Garg, Kaushal K.; Dixit, Sreenath] Int Crops Res Inst Semi Arid Trop, ICRISAT Dev Ctr IDC, Patancheru 502324, Telangana, India; [Ragab, Ragab] UK Ctr Ecol & Hydrol, Maclean Bldg,Benson Lane Crowmarsh Giffor, Wallingford, Oxon, England
推荐引用方式 GB/T 7714	Nune, Rajesh,George, Biju A.,Western, Andrew W.,et al. A comprehensive assessment framework for attributing trends in streamflow and groundwater storage to climatic and anthropogenic changes: A case study in the typical semi-arid catchments of southern India[J]. International Crops Research Institute for the Semi-Arid Tropics,2021,35(8).
APA	Nune, Rajesh,George, Biju A.,Western, Andrew W.,Garg, Kaushal K.,Dixit, Sreenath,&Ragab, Ragab.(2021).A comprehensive assessment framework for attributing trends in streamflow and groundwater storage to climatic and anthropogenic changes: A case study in the typical semi-arid catchments of southern India.HYDROLOGICAL PROCESSES,35(8).
MLA	Nune, Rajesh,et al."A comprehensive assessment framework for attributing trends in streamflow and groundwater storage to climatic and anthropogenic changes: A case study in the typical semi-arid catchments of southern India".HYDROLOGICAL PROCESSES 35.8(2021).