气候变化领域集成服务门户(CCPortal): South Asian agriculture increasingly dependent on meltwater and groundwater

CCPortal

DOI	10.1038/s41558-022-01355-z
	South Asian agriculture increasingly dependent on meltwater and groundwater
	Lutz A.F.; Immerzeel W.W.; Siderius C.; Wijngaard R.R.; Nepal S.; Shrestha A.B.; Wester P.; Biemans H.
发表日期	2022
ISSN	1758-678X
英文摘要	Irrigated agriculture in South Asia depends on meltwater, monsoon rains and groundwater. Climate change alters the hydrology and causes shifts in the timing, composition and magnitude of these sources of water supply. Simultaneously, socio-economic growth increases water demand. Here we use a high-resolution cryosphere–hydrology–crop model forced with an ensemble of climate and socio-economic projections to assess how the sources of irrigation water supply may shift during the twenty-first century. We find increases in the importance of meltwater and groundwater for irrigated agriculture. An earlier melt peak increases meltwater withdrawal at the onset of the cropping season in May and June in the Indus, whereas increasing peak irrigation water demand during July and August aggravates non-renewable groundwater pumping in the Indus and Ganges despite runoff increases. Increasing inter-annual variability in rainfall runoff increases the need for meltwater and groundwater to complement rainfall runoff during future dry years. © 2022, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/256776
作者单位	Department of Physical Geography, Faculty of Geosciences, Utrecht University, Utrecht, Netherlands; FutureWater, Wageningen, Netherlands; Uncharted Waters, Sydney, Australia; Department of Atmospheric Sciences, Yonsei University, Seoul, South Korea; International Centre for Integrated Mountain Development, Kathmandu, Nepal; International Water Management Institute, Nepal Office, Kathmandu, Nepal; Wageningen Environmental Research, Wageningen, Netherlands
推荐引用方式 GB/T 7714	Lutz A.F.,Immerzeel W.W.,Siderius C.,et al. South Asian agriculture increasingly dependent on meltwater and groundwater[J],2022.
APA	Lutz A.F..,Immerzeel W.W..,Siderius C..,Wijngaard R.R..,Nepal S..,...&Biemans H..(2022).South Asian agriculture increasingly dependent on meltwater and groundwater.Nature Climate Change.
MLA	Lutz A.F.,et al."South Asian agriculture increasingly dependent on meltwater and groundwater".Nature Climate Change (2022).