气候变化领域集成服务门户(CCPortal): A new agricultural drought index considering the irrigation water demand and water supply availability

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DOI	10.1007/s11069-020-04278-0
	A new agricultural drought index considering the irrigation water demand and water supply availability
	Xing Z.; Ma M.; Wei Y.; Zhang X.; Yu Z.; Yi P.
发表日期	2020
ISSN	0921030X
起始页码	2409
结束页码	2429
卷号	104 期号:3
英文摘要	Agricultural drought has a tremendous impact on crop yields and economic development under the context of global climate change. As an essential component of water balance in irrigated areas, artificial irrigation, which is not widely incorporated into agricultural drought indices in previous studies. Therefore, an irrigation water deficit index (IWDI) based on the estimation of irrigation water demand and supply is proposed. The performance of the new index was compared with the Soil Moisture Anomaly Percentage Index (SMAPI) over the upstream of the Zi River basin (UZRB). The results indicated the IWDI is highly correlated with precipitation, runoff, and potential evapotranspiration, combined with a more comprehensive moisture condition than the previous agricultural drought index. Due to the consideration of crop growth process and farmland spatial distribution, the proposed index showed a significant advantage in stressing drought conditions of agricultural concentration area and eliminating the impact of invalid soil moisture drought of non-growing seasons. Furthermore, the drought condition identified by the new index presented a good agreement with the historical drought event that occurred in 2013.7–8, which accurately reproduced the soil moisture variation and vegetation growth dynamics. © 2020, The Author(s).
关键词	Agriculture Drought Hydrological model Index Irrigation
英文关键词	agricultural soil; crop plant; demand analysis; drought; growth rate; hydrological modeling; irrigation; soil moisture; water supply
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206009
作者单位	State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China; Hunan Institute of Water Resources and Hydropower Research, Changsha, 410007, China; Research Center on Flood and Drought Disaster Reduction of the Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing, 100038, China; College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China
推荐引用方式 GB/T 7714	Xing Z.,Ma M.,Wei Y.,et al. A new agricultural drought index considering the irrigation water demand and water supply availability[J],2020,104(3).
APA	Xing Z.,Ma M.,Wei Y.,Zhang X.,Yu Z.,&Yi P..(2020).A new agricultural drought index considering the irrigation water demand and water supply availability.Natural Hazards,104(3).
MLA	Xing Z.,et al."A new agricultural drought index considering the irrigation water demand and water supply availability".Natural Hazards 104.3(2020).