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Quantitative Assessment of Agricultural Drought Risk in Southeast Gansu Province, Northwest China

文献类型：期刊论文

作者Zeng, Zhaoqi1,2; Wu, Wenxiang1,3; Li, Zhaolei4; Zhou, Yang1; Huang, Han5
刊名SUSTAINABILITY
出版日期2019-10-01
卷号11期号:19页码:21
关键词Standardized Precipitation Evapotranspiration Index Mann-Kendall trend analysis assessment agricultural drought risk
DOI10.3390/su11195533
通讯作者Wu, Wenxiang(wuwx@igsnrr.ac.cn) ; Li, Zhaolei(lizlei@igsnrr.ac.cn)
英文摘要The sector that suffers the most directly from drought is agriculture, and drought is expected to become more serious in the context of global warming. Effectively evaluating the agricultural drought risk is fundamental to establishing present water resource management and guaranteeing food security. Therefore, southeast Gansu province was selected for this study as a typical region for which to analyze drought trends and assess agricultural drought risk. Trends for the period from 1967 to 2018 were analyzed at 21 locations by using the Mann-Kendall method, and drought was quantified by using the Standardized Precipitation Evapotranspiration Index (SPEI). Spatial characteristics of the agricultural drought risk that emphasized the combined role of hazards and vulnerability were investigated at a 1-km grid scale. Results showed that the annual SPEI exhibited a nonsignificant increasing trend from 1967 to 1990 but that after 1990, the SPEI showed a steep downward trend of 0.1 per decade. The drying trend from 1990 to 2018 was mainly attributed to a significant increase in the reference evapotranspiration. Approximately 16.1% of the agricultural areas are exposed to an extremely high risk and 42.2% are exposed to high risk of drought. Moreover, 56.7% of the extremely high-risk agricultural areas are located in the Longnan region, which strongly suggests that more attention must be paid to preparedness for and mitigation of drought in the Longnan region. This study offers a scientific approach to evaluating the risk of agricultural drought in dry agricultural regions.
WOS关键词CONTRIBUTING CLIMATIC FACTORS ; REFERENCE EVAPOTRANSPIRATION ; SPATIOTEMPORAL VARIABILITY ; PAN EVAPORATION ; VULNERABILITY ; PRECIPITATION ; ADAPTATION
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19040304] ; National Key Research and Development Program of China[2016YFA0602402] ; Postdoctoral Science Foundation of China[2018M641459]
WOS研究方向Science & Technology - Other Topics ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000493525500392
出版者MDPI
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key Research and Development Program of China ; Postdoctoral Science Foundation of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/131697]  
专题中国科学院地理科学与资源研究所
通讯作者Wu, Wenxiang; Li, Zhaolei
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Dept Environm & Resources, Beijing 100049, Peoples R China
3.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
4.Shandong Agr Univ, Coll Resources & Environm, Key Lab Agr Environm Univ Shandong, Natl Engn Lab Efficient Utilizat Soil & Fertilize, Tai An 271018, Shandong, Peoples R China
5.China Univ Geosci, Sch Land Sci & Technol, Beijing 100083, Peoples R China
推荐引用方式
GB/T 7714		 Zeng, Zhaoqi,Wu, Wenxiang,Li, Zhaolei,et al. Quantitative Assessment of Agricultural Drought Risk in Southeast Gansu Province, Northwest China[J]. SUSTAINABILITY,2019,11(19):21.
APA Zeng, Zhaoqi,Wu, Wenxiang,Li, Zhaolei,Zhou, Yang,&Huang, Han.(2019).Quantitative Assessment of Agricultural Drought Risk in Southeast Gansu Province, Northwest China.SUSTAINABILITY,11(19),21.
MLA Zeng, Zhaoqi,et al."Quantitative Assessment of Agricultural Drought Risk in Southeast Gansu Province, Northwest China".SUSTAINABILITY 11.19(2019):21.

入库方式： OAI收割

来源：地理科学与资源研究所

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