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Assessment of Agricultural Drought Vulnerability Based on Crop growth stages:A Case Study of Huaibei Plain,China

International Journal of Disaster Risk Science 2023年第2期14卷 209-222页

作者： Yanqi Wei Juliang Jin Haichao Li Yuliang Zhou Yi Cui Nii Amarquaye Commey Yuliang Zhang Shangming Jiang School of Energy and Power Engineering Xihua UniversityChengdu610039China School of Civil Engineering Hefei University of TechnologyHefei230009China Institute of Water Resources and Environmental Systems Engineering Hefei University of TechnologyHefei230009China State Key Laboratory of Hydroscience and Engineering Department of Hydraulic EngineeringTsinghua UniversityBeijing100084China Interdisciplinary Centre for River Basin Environment University of YamanashiKofu400-8510Japan Key Laboratory of Water Conservancy and Water Resources of Anhui Province Water Resources Research Institute of Anhui Province and Huaihe River CommissionMinistry of Water ResourcesHefei230088China

Climate change can lead to and intensify drought *** the vulnerability of disaster-affected elements is significant for understanding the mechanisms that transform drought intensity into eventual *** study proposed a growth-stage-based drought vulnerability index(GDVI)of soybean using meteorological,groundwater,land use,and field experiment data and crop growth model *** CROPGRO-soybean model was used to simulate crop growth and water *** growth stages were considered since the sensitivity of soybean to drought is strictly related to the growth *** GDVI was applied to the Huaibei Plain,Anhui Province,China,with the goal of quantifying the spatiotemporal characteristics of soybean drought vulnerability in typical years and growth *** results show that:(1)The sensitivity of leaf-related parameters exceeded that of other parameters during the vegetative growth stage,whereas the top weight and grain yield showed a higher sensitivity in the reproductive growth stage;(2)A semi-logarithmic law can describe the relationship between the drought sensitivity indicators and the GDVI during the four growth *** pod-filling phase is the most vulnerable stage for water deficit and with the highest loss upper limit(over 70%);(3)The 2001 and 2002 seasons were the driest time during *** and Huainan Cities were more vulnerable to drought than other regions on the Huaibei Plain in 2001,while Huaibei and Suzhou Cities were the most susceptible areas in *** results could provide effective decision support for the categorization of areas vulnerable to droughts.

关键词： Agricultural drought Drought vulnerability Huaibei plain soybean growth stages

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