论文题名: Impact of global warming (1.5ºC) on the productivity of selected C3 and C4 crops across Tamil Nadu
作者: Gowtham R. ; Geethalakshmi V. ; Bhuvaneshwari K. ; Senthil A. ; Dhasarathan M. ; Revi A. ; Bazaz A.
刊名: Journal of Agrometeorology
ISSN: 9721665
出版年: 2020
卷: 22, 期: 1 语种: 英语
英文关键词: 1.5 ºC warming
; Climate change
; Global warming
; IPCC
英文摘要: Over the last century, mean annual temperatures increased by ~1°C. UNFCCC has proposed to limit warming below 1.5°C relative to pre-industrial levels. A study was conducted on rice (C3 pathway) and maize (C4 pathway) over Tamil Nadu using DSSAT to understand the climate change impacts with projected temperature increase of 1.5°C.The future climate under RCP 4.5 and RCP 8.5 indicated 1.5°C increase in temperature to happen by 2053 and 2035, respectively over Tamil Nadu.Annual rainfall deviations in RCP4.5 showed drier than current condition and RCP8.5 projected wetter SWM and drier NEM (90 % of current rainfall).Impact of 1.5°C warming on crop phenology indicated 8 days reduction in duration for rice and maize. The W UE of rice would decrease by 17 per cent at current CO2 whereas, enrichment (430 ppm) would reduce by12 per cent and rice yield is reduced by 21 per cent with 360 ppm CO2 and 430 ppm reducedby 17 per cent. There is no considerable varaition (-5 to 1 %) in maize productivity with 1.5 ºC warming. The above results indicated that 1.5 ºC warming has more negative impacts on plants with C3 compared to C4 pathway. © 2020, Association of Agrometeorologists. All rights reserved. 资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158844
Appears in Collections: 气候变化与战略
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作者单位: Tamil Nadu Agricultural UniversityTamil Nadu, India; Indian Institute for Human Settlements, Bangalore, Karnataka, India
Recommended Citation:
Gowtham R.,Geethalakshmi V.,Bhuvaneshwari K.,et al. Impact of global warming (1.5ºC) on the productivity of selected C3 and C4 crops across Tamil Nadu[J]. Journal of Agrometeorology,2020-01-01,22(1)