Spatiotemporal assessment of drought and its impacts on crop yield in the Koshi River Basin, Nepal | |
Dahal, Nirmal Mani6,7,8; Xiong, Donghong4,5,8; Neupane, Nilhari3; Yuan, Yong7,8; Zhang, Baojun5,8; Zhang, Su2; Fang, Yiping8; Zhao, Wei4,8; Wu, Yanhong4,8; Deng, Wei1 | |
刊名 | THEORETICAL AND APPLIED CLIMATOLOGY |
2023-11-03 | |
页码 | 20 |
关键词 | 无 |
ISSN号 | 0177-798X |
DOI | 10.1007/s00704-023-04719-3 |
英文摘要 | Understanding the impact of drought on agriculture is critical for reducing drought-related yield losses in the Koshi River Basin, Nepal. This study used the Standardized Potential Evapotranspiration Index (SPEI) to analyze drought during the crop growing season. The Lagrange interpolation method was employed to identify expected crop yields and to quantify crop yield losses in the Koshi River Basin, Nepal. Finally, the correlation method was applied to observe the relationship between yield loss and drought in the basin. Spatially, the growing seasons of maize, rice, and wheat in the hill region exhibited a more pronounced increase in the drought trend compared to the mountain and Terai regions. Similarly, the maize growing season demonstrated a more significant increasing drought trend than rice and wheat across all regions. However, the wheat growing season in the mountain exhibited an increasing drought trend. The correlations between the detrended SPEI and crop yield loss revealed that maize yields in the Terai and mountain regions are sensitive to drought in both the early stages (from sowing to tasseling) and later stages (milking, seed ripening) in the hill. Similarly, rice yields are sensitive to drought from the plant elongation to ripening in both the hill and Terai regions. Wheat yield analysis showed a weak positive relationship in all regions. The findings of our study can enhance understanding of drought conditions and their impact on crop growth stages, thereby assisting local farmers and agricultural institutions in managing crop yield loss. |
资助项目 | This study was funded by the Chinese Academy of Sciences (CAS) Overseas Institutions Platform Project (Grant No. 131C11KYSB20200033) and the National Natural Science Foundation of China (NSFC) and International Center for Integrated Mountain Development (I[131C11KYSB20200033] ; Chinese Academy of Sciences (CAS) Overseas Institutions Platform Project ; National Natural Science Foundation of China (NSFC)[41661144038] ; International Center for Integrated Mountain Development (ICIMOD) (NSFC-ICIMOD) Joint Research Project |
WOS关键词 | CLIMATE-CHANGE ; WATER AVAILABILITY ; PLANT-RESPONSES ; PRECIPITATION ; STRESS ; GROWTH ; TEMPERATURE ; TRENDS ; VULNERABILITY ; RICE |
WOS研究方向 | Meteorology & Atmospheric Sciences |
语种 | 英语 |
出版者 | SPRINGER WIEN |
WOS记录号 | WOS:001094488200003 |
资助机构 | This study was funded by the Chinese Academy of Sciences (CAS) Overseas Institutions Platform Project (Grant No. 131C11KYSB20200033) and the National Natural Science Foundation of China (NSFC) and International Center for Integrated Mountain Development (I ; Chinese Academy of Sciences (CAS) Overseas Institutions Platform Project ; National Natural Science Foundation of China (NSFC) ; International Center for Integrated Mountain Development (ICIMOD) (NSFC-ICIMOD) Joint Research Project |
内容类型 | 期刊论文 |
源URL | [http://ir.imde.ac.cn/handle/131551/57695] |
专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
通讯作者 | Xiong, Donghong |
作者单位 | 1.Sichuan Normal Univ, Coll Geog & Resources, Chengdu 610101, Peoples R China 2.Neijiang Normal Univ, Sch Geog & Resources Sci, Neijiang 641112, Peoples R China 3.Nepal Open Univ, Lalitpur 44600, Nepal 4.CAS TU, Kathmandu Ctr Res & Educ, Branch Sustainable Mt Dev, Kathmandu 44600, Nepal 5.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610299, Peoples R China 6.People Need, Kathmandu, Nepal 7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 8.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610299, Peoples R China |
推荐引用方式 GB/T 7714 | Dahal, Nirmal Mani,Xiong, Donghong,Neupane, Nilhari,et al. Spatiotemporal assessment of drought and its impacts on crop yield in the Koshi River Basin, Nepal[J]. THEORETICAL AND APPLIED CLIMATOLOGY,2023:20. |
APA | Dahal, Nirmal Mani.,Xiong, Donghong.,Neupane, Nilhari.,Yuan, Yong.,Zhang, Baojun.,...&Deng, Wei.(2023).Spatiotemporal assessment of drought and its impacts on crop yield in the Koshi River Basin, Nepal.THEORETICAL AND APPLIED CLIMATOLOGY,20. |
MLA | Dahal, Nirmal Mani,et al."Spatiotemporal assessment of drought and its impacts on crop yield in the Koshi River Basin, Nepal".THEORETICAL AND APPLIED CLIMATOLOGY (2023):20. |
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