Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/ab22db |
Sensitivity of grain yields to historical climate variability in India | |
Davis, Kyle Frankel1,2,3; Chhatre, Ashwini4; Rao, Narasimha D.5,6; Singh, Deepti7; DeFries, Ruth8 | |
2019-06-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS
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ISSN | 1748-9326 |
出版年 | 2019 |
卷号 | 14期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; India; Austria |
英文摘要 | Fluctuations in temperature and precipitation influence crop productivity across the planet. With episodes of extreme climate becoming increasingly frequent, buffering crop production against these stresses is a critical aspect of climate adaptation. In India, where grain production and diets are closely linked, national food supply is sensitive to the effect of climate variability on monsoon grain production. Here we quantitatively examine the historical (1966-2011) relationship between interannual variations in temperature and rainfall and rainfed yield variability for five monsoon crops-rice and four alternative grains (finger millet, maize, pearl millet, and sorghum). Compared to rice, we find that alternative grains are significantly less sensitive to climate variation and generally experience smaller declines in yield under climate extremes. However, maximizing harvested area allocations to coarse grains (i.e. holding maize production constant) reduced grain production by 12.0 Mtonnes (-17.2%) under drought conditions and 12.8 Mtonnes (-18.0%) during non-drought years (non-drought). Increasing the harvested area allocated to all alternative grains (i.e. including maize) can enhance production by +39.6% (drought) and by +37.0% (non-drought). These alternative grains therefore offer promise for reducing variations in Indian grain production in response to climate shocks, but avoiding grain production shortfalls from increased alternative grains will require yield improvements that do not compromise their superior climate resilience. |
英文关键词 | climate variability crop production India yield variation rice monsoon coarse grains |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000471651800001 |
WOS关键词 | MONSOON ; DISASTERS ; RAINFALL ; IMPACTS |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/183731 |
专题 | 气候变化 |
作者单位 | 1.Univ Delaware, Dept Geog, Newark, DE 19716 USA; 2.Univ Delaware, Dept Plant & Soil Sci, Newark, DE 19716 USA; 3.Columbia Univ, Data Sci Inst, New York, NY 10025 USA; 4.Indian Sch Business, Hyderabad, Telangana, India; 5.Yale Univ, Sch Forestry & Environm Studies, New Haven, CT 06511 USA; 6.Int Inst Appl Syst Anal, Laxenburg, Austria; 7.Washington State Univ, Sch Environm, Vancouver, WA 99164 USA; 8.Columbia Univ, Dept Ecol Evolut & Environm Biol, New York, NY 10027 USA |
推荐引用方式 GB/T 7714 | Davis, Kyle Frankel,Chhatre, Ashwini,Rao, Narasimha D.,et al. Sensitivity of grain yields to historical climate variability in India[J]. ENVIRONMENTAL RESEARCH LETTERS,2019,14(6). |
APA | Davis, Kyle Frankel,Chhatre, Ashwini,Rao, Narasimha D.,Singh, Deepti,&DeFries, Ruth.(2019).Sensitivity of grain yields to historical climate variability in India.ENVIRONMENTAL RESEARCH LETTERS,14(6). |
MLA | Davis, Kyle Frankel,et al."Sensitivity of grain yields to historical climate variability in India".ENVIRONMENTAL RESEARCH LETTERS 14.6(2019). |
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