DOI: 10.1007/s11069-020-04278-0
论文题名: A new agricultural drought index considering the irrigation water demand and water supply availability
作者: Xing Z. ; Ma M. ; Wei Y. ; Zhang X. ; Yu Z. ; Yi P.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 104, 期: 3 起始页码: 2409
结束页码: 2429
语种: 英语
中文关键词: 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
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). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168808
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
Xing Z.,Ma M.,Wei Y.,et al. A new agricultural drought index considering the irrigation water demand and water supply availability[J]. Natural Hazards,2020-01-01,104(3)