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Long-term spatiotemporal trends of temperature associated with sugarcane in west India

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Abstract

The study of temperature trends and its impact on agricultural crop is critically important for evaluating the effects of climate change on food security. Spatiotemporal trends of the monthly, seasonal, and annual average temperature of 36 districts of Maharashtra, located in west India, were analyzed using 68 years of gridded temperature data of India Meteorological Department Mann-Kendall, modified Mann-Kendall, and Spearman’s rank correlation tests were used to analyze the trends of temperature, whereas Sen’s slope, Spearman’s Rho, and simple linear regression were used to quantify the magnitude of trends at 1% and 5% levels of significance. Correlation and regression analysis were performed between temperature and detrended yield for sugarcane. Results revealed that only increasing trends of monthly, seasonal, and annual average temperatures were significant in districts of Maharashtra. Significantly rising temperature trends of up to 2.58 °C, 1.78 °C and 1.05°C per 100 year were observed in monthly, seasonal, and annual temperatures, respectively. The magnitude of increasing temperature trends was more in the second half of the year. November and post-monsoon season had the highest increasing magnitude of  trend for monthly and seasonal temperatures, respectively. Our analysis reveals increasing trends of average temperature in the region, which has significant negative impacts on Sugarcane (Saccharum officinarum L.). District-wise correlations of yield and monthly temperature anomalies showed 63.9% negative correlations, with significant negative correlations in 7.3% combinations. Overall the state has significant negative correlations of yield and monthly temperature, with Pearson’s correlation coefficient varying from −0.1(September) to −0.32 (July). The study confirms the adverse impacts of climate change on agricultural crop, and the results along with the district-wise temperature trend maps will be helpful for policy planners for agricultural resource management in west India.

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Data Availability

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgments

The author(s) would like to thank the India Meteorological Department (IMD), Pune for providing the daily temperature time series data for this study.

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Correspondence to RN Singh.

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The authors declare that they have no conflict of interest

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Responsible Editor: Zhihua Zhang

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Singh, R., Sah, S., Das, B. et al. Long-term spatiotemporal trends of temperature associated with sugarcane in west India. Arab J Geosci 14, 1955 (2021). https://doi.org/10.1007/s12517-021-08315-5

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  • DOI: https://doi.org/10.1007/s12517-021-08315-5

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