Optimal rainfall threshold for monsoon rice production in India varies across space and time-Reference-Cited by-同舟云学术

Optimal rainfall threshold for monsoon rice production in India varies across space and time

Published:2024-06-06 Issue:1 Volume:5 Page:
ISSN:2662-4435
Container-title:Communications Earth & Environment
language:en
Short-container-title:Commun Earth Environ

Author:

Maiti Arabinda,Hasan Md Kamrul^ORCID,Sannigrahi Srikanta^ORCID,Bar Somnath,Chakraborti Suman,Mahto Shanti Shwarup^ORCID,Chatterjee Sumanta,Pramanik Suvamoy,Pilla Francesco^ORCID,Auerbach Jeremy^ORCID,Sonnentag Oliver,Song Conghe,Zhang Qi^ORCID

Abstract

AbstractClimate change affects Indian agriculture, which depends heavily on the spatiotemporal distribution of monsoon rainfall. Despite the nonlinear relationship between crop yield and rainfall, little is known about the optimal rainfall threshold, particularly for monsoon rice. Here, we investigate the responses of rice yield to monsoon rainfall in India by analyzing historical rice production statistics and climate data from 1990 to 2017. Results show that excessive and deficit rainfall reduces rice yield by 33.7% and 19%, respectively. The overall optimal rainfall threshold nationwide is 1621 ± 34 mm beyond which rice yield declines by 6.4 kg per hectare per 100 mm of rainfall, while the identifiable thresholds vary spatially across 14 states. The temporal variations in rice yield are influenced by rainfall anomalies featured by El Niño-Southern Oscillation events.

Funder

National Science Foundation

Publisher

Springer Science and Business Media LLC

Link

https://www.nature.com/articles/s43247-024-01414-7.pdf

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