干旱区生态环境知识资源中心(Arid): Implications of future climate change on crop and irrigation water requirements in a semi-arid river basin using CMIP6 GCMs

Arid

DOI	10.1007/s40333-022-0081-1
	Implications of future climate change on crop and irrigation water requirements in a semi-arid river basin using CMIP6 GCMs
	Karan, Kunal; Singh, Dharmaveer; Singh, Pushpendra K.; Bharati, Birendra; Singh, Tarun P.; Berndtsson, Ronny
通讯作者	Singh, D
来源期刊	JOURNAL OF ARID LAND
ISSN	1674-6767
EISSN	2194-7783
出版年	2022
卷号	14 期号:11 页码:1234-1257
英文摘要	Agriculture faces risks due to increasing stress from climate change, particularly in semi-arid regions. Lack of understanding of crop water requirement (CWR) and irrigation water requirement (IWR) in a changing climate may result in crop failure and socioeconomic problems that can become detrimental to agriculture-based economies in emerging nations worldwide. Previous research in CWR and IWR has largely focused on large river basins and scenarios from the Coupled Model Intercomparison Project Phase 3 (CMIP3) and Coupled Model Intercomparison Project Phase 5 (CMIP5) to account for the impacts of climate change on crops. Smaller basins, however, are more susceptible to regional climate change, with more significant impacts on crops. This study estimates CWRs and IWRs for five crops (sugarcane, wheat, cotton, sorghum, and soybean) in the Pravara River Basin (area of 6537 km(2)) of India using outputs from the most recent Coupled Model Intercomparison Project Phase 6 (CMIP6) General Circulation Models (GCMs) under Shared Socio-economic Pathway (SSP)245 and SSP585 scenarios. An increase in mean annual rainfall is projected under both scenarios in the 2050s and 2080s using ten selected CMIP6 GCMs. CWRs for all crops may decline in almost all of the CMIP6 GCMs in the 2050s and 2080s (with the exceptions of ACCESS-CM-2 and ACCESS-ESM-1.5) under SSP245 and SSP585 scenarios. The availability of increasing soil moisture in the root zone due to increasing rainfall and a decrease in the projected maximum temperature may be responsible for this decline in CWR. Similarly, except for soybean and cotton, the projected IWRs for all other three crops under SSP245 and SSP585 scenarios show a decrease or a small increase in the 2050s and 2080s in most CMIP6 GCMs. These findings are important for agricultural researchers and water resource managers to implement long-term crop planning techniques and to reduce the negative impacts of climate change and associated rainfall variability to avert crop failure and agricultural losses.
英文关键词	climate change crop water requirement irrigation water requirement CMIP6 GCMs emission scenario Pravara River Basin
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000864991000001
WOS关键词	REGIONAL IMPACTS ; RICE ; AGRICULTURE ; HOMOGENEITY ; MODEL ; INDEX
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393337
推荐引用方式 GB/T 7714	Karan, Kunal,Singh, Dharmaveer,Singh, Pushpendra K.,et al. Implications of future climate change on crop and irrigation water requirements in a semi-arid river basin using CMIP6 GCMs[J],2022,14(11):1234-1257.
APA	Karan, Kunal,Singh, Dharmaveer,Singh, Pushpendra K.,Bharati, Birendra,Singh, Tarun P.,&Berndtsson, Ronny.(2022).Implications of future climate change on crop and irrigation water requirements in a semi-arid river basin using CMIP6 GCMs.JOURNAL OF ARID LAND,14(11),1234-1257.
MLA	Karan, Kunal,et al."Implications of future climate change on crop and irrigation water requirements in a semi-arid river basin using CMIP6 GCMs".JOURNAL OF ARID LAND 14.11(2022):1234-1257.