Wu Jianjun1; Geng Guangpo1; Zhou Hongkui1; Liu Jinghui2; Wang Qianfeng3; Yang Jianhua1
Source Publicationsciencechinaearthsciences
AbstractAs an important part of agricultural drought risk, agricultural drought vulnerability helps effectively prevent and alleviate drought impacts by quantifying the vulnerability as well as identifying its spatial distribution characteristics. In this study, global agricultural cultivation regions were chosen as the study area; six main crops (wheat, maize, rice, barley, soybean, sorghum) were selected as the hazard-affected body of agricultural drought. Then, global vulnerability to agricultural drought was assessed at a 0.5A degrees resolution and finally, its distribution characteristics were revealed. The results indicated that the area percentages of different grades of global vulnerability to agricultural drought from low to very high were 38.96%, 28.41%, 25.37%, and 7.26%, respectively. This means that the total area percentage of high and very high vulnerability zones exceeded 30% of the study area. Although high and very high vulnerability zones were mainly distributed in arid and semi-arid regions, approximately 40% of those above were distributed in humid and semi-humid regions. In addition, only about 15% of the population in this study was located in the high vulnerability regions. Among the vulnerability factors, water deficit during the growing season and the irrigation area ratio are the key factors affecting regional vulnerability. Therefore, the vulnerability could be reduced by adjusting crop planting dates and structures as well as by improving irrigation level and capacity.
Funding Project[National Natural Science Foundation of China] ; [Fundamental Research Funds for the Central Universities]
Document Type期刊论文
Recommended Citation
GB/T 7714
Wu Jianjun,Geng Guangpo,Zhou Hongkui,et al. globalvulnerabilitytoagriculturaldroughtanditsspatialcharacteristics[J]. sciencechinaearthsciences,2017,60(5):910.
APA Wu Jianjun,Geng Guangpo,Zhou Hongkui,Liu Jinghui,Wang Qianfeng,&Yang Jianhua.(2017).globalvulnerabilitytoagriculturaldroughtanditsspatialcharacteristics.sciencechinaearthsciences,60(5),910.
MLA Wu Jianjun,et al."globalvulnerabilitytoagriculturaldroughtanditsspatialcharacteristics".sciencechinaearthsciences 60.5(2017):910.
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