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DOI	10.1007/s10333-024-00969-7
	Analyzing the impact of meteorological drought on crop yield of Kerala, India: a wavelet coherence approach
	Das, Geethu G.; Adarsh, S.; Sruthi, S.; Sreelekshmi, C. R.; Dileep, Urmila; Fathima, Ameesha J.
发表日期	2024
ISSN	1611-2490
EISSN	1611-2504
起始页码	22
结束页码	2
卷号	22 期号:2
英文摘要	Drought is a natural phenomenon which is considered as an indicator of changing climatic conditions. The growth of crops is significantly affected by the lack of soil moisture caused by insufficient rainfall over a specific period. This study examines the occurrence of drought over seven districts in Kerala, India, by utilizing drought indices, namely the standardized precipitation index (SPI) and the agricultural standardized precipitation index (aSPI). The measured data pertaining to rainfall and computed data of crop yield of the seven districts have been gathered to analyze the teleconnections of crop yield. Modified standardized yield residual series (M-SYRS) of different crops are prepared by the proposed approach of empirical mode decomposition-based detrending. The correlation between aSPI and M-SYRS exhibits a higher magnitude compared to the correlation that SPI and M-SYRS, confirming the significance of aSPI in the analysis of agricultural yield. The wavelet coherence analysis yields the values of percentage of significant coherence (PoSC) and average wavelet coherence (AWC) for the time scales of 3, 6, and 12 months, with respect to the variables aSPI and crop yield. The crop with the greatest AWC value of 0.71 and PoSC value of 62 is banana, which holds a dominant position in the agricultural landscape of Kottayam district. It is further noted that the short to medium seasonal droughts have profound impact on the agricultural yield of the different districts.
英文关键词	Drought; Crop yield; Precipitation; Coherence; Correlation; Wavelet
语种	英语
WOS研究方向	Agriculture
WOS类目	Agricultural Engineering ; Agronomy
WOS记录号	WOS:001170988100001
来源期刊	PADDY AND WATER ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/298808
作者单位	Thangal Kunju Musaliar College of Engineering
推荐引用方式 GB/T 7714	Das, Geethu G.,Adarsh, S.,Sruthi, S.,et al. Analyzing the impact of meteorological drought on crop yield of Kerala, India: a wavelet coherence approach[J],2024,22(2).
APA	Das, Geethu G.,Adarsh, S.,Sruthi, S.,Sreelekshmi, C. R.,Dileep, Urmila,&Fathima, Ameesha J..(2024).Analyzing the impact of meteorological drought on crop yield of Kerala, India: a wavelet coherence approach.PADDY AND WATER ENVIRONMENT,22(2).
MLA	Das, Geethu G.,et al."Analyzing the impact of meteorological drought on crop yield of Kerala, India: a wavelet coherence approach".PADDY AND WATER ENVIRONMENT 22.2(2024).