Historical Analysis of the Effects of Drought on Rice and Maize Yields in Southeast Asia

IF 3.6 Q2 ENVIRONMENTAL SCIENCES

Resources Pub Date : 2024-03-18 DOI:10.3390/resources13030044

Teerachai Amnuaylojaroen, Pavinee Chanvichit

{"title":"Historical Analysis of the Effects of Drought on Rice and Maize Yields in Southeast Asia","authors":"Teerachai Amnuaylojaroen, Pavinee Chanvichit","doi":"10.3390/resources13030044","DOIUrl":null,"url":null,"abstract":"This study performs an empirical orthogonal function (EOF) analysis to study the relationship between rice and maize productivities and the different time scales of the Standardized Precipitation Evapotranspiration Index (SPEI), including 1-month, 6-month, and 12-month time scales in Southeast Asia during the years 1970–2019. For the 1-month time scale, the averaged SPEI values are in the range of −1.0 to 1.0, indicating a moderate degree of dryness and humidity. Both 6-month and 12-month time scales suggest that many countries in Southeast Asia are experiencing mostly wet conditions, with SPEI values reaching up to 1.5. The relationship analysis by using EOF was indicated by the first and second principal components (PC1 and PC2) suggesting that drought events exhibit a positive orientation to crop productivity, especially maize in Southeast Asia. The pattern of climate oscillations, such as the El Niño-Southern Oscillation (ENSO), is likely related to crop productivity in Southeast Asia. The findings emphasize the importance of considering temporal climatic patterns in agricultural decision-making, with implications for enhancing regional climate resilience and ensuring sustainable food security in the face of global climate change.","PeriodicalId":37723,"journal":{"name":"Resources","volume":null,"pages":null},"PeriodicalIF":3.6000,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Resources","FirstCategoryId":"1087","ListUrlMain":"https://doi.org/10.3390/resources13030044","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

This study performs an empirical orthogonal function (EOF) analysis to study the relationship between rice and maize productivities and the different time scales of the Standardized Precipitation Evapotranspiration Index (SPEI), including 1-month, 6-month, and 12-month time scales in Southeast Asia during the years 1970–2019. For the 1-month time scale, the averaged SPEI values are in the range of −1.0 to 1.0, indicating a moderate degree of dryness and humidity. Both 6-month and 12-month time scales suggest that many countries in Southeast Asia are experiencing mostly wet conditions, with SPEI values reaching up to 1.5. The relationship analysis by using EOF was indicated by the first and second principal components (PC1 and PC2) suggesting that drought events exhibit a positive orientation to crop productivity, especially maize in Southeast Asia. The pattern of climate oscillations, such as the El Niño-Southern Oscillation (ENSO), is likely related to crop productivity in Southeast Asia. The findings emphasize the importance of considering temporal climatic patterns in agricultural decision-making, with implications for enhancing regional climate resilience and ensuring sustainable food security in the face of global climate change.

查看原文本刊更多论文

干旱对东南亚水稻和玉米产量影响的历史分析

本研究采用经验正交函数（EOF）分析方法，研究了1970-2019年间东南亚地区水稻和玉米产量与标准化降水蒸散指数（SPEI）不同时间尺度（包括1个月、6个月和12个月时间尺度）之间的关系。在 1 个月时间尺度上，SPEI 的平均值在-1.0 至 1.0 之间，表明干湿度适中。6 个月和 12 个月时间尺度都表明，东南亚许多国家大部分地区都处于潮湿状态，SPEI 值高达 1.5。利用 EOF 进行的关系分析表明，第一和第二主成分（PC1 和 PC2）表明，干旱事件对作物生产率，尤其是东南亚的玉米生产率有积极的影响。气候振荡（如厄尔尼诺-南方涛动（ENSO））的模式很可能与东南亚的作物生产力有关。研究结果强调了在农业决策中考虑时间气候模式的重要性，这对提高区域气候适应能力和确保全球气候变化下的可持续粮食安全具有重要意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Resources Environmental Science-Nature and Landscape Conservation

CiteScore

7.20

自引率

6.10%

发文量

审稿时长

11 weeks

期刊介绍： Resources (ISSN 2079-9276) is an international, scholarly open access journal on the topic of natural resources. It publishes reviews, regular research papers, communications and short notes, and there is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental and methodical details must be provided so that the results can be reproduced. There are, in addition, unique features of this journal: manuscripts regarding research proposals and research ideas will be particularly welcomed, electronic files or software regarding the full details of the calculation and experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Subject Areas: natural resources, water resources, mineral resources, energy resources, land resources, plant and animal resources, genetic resources, ecology resources, resource management and policy, resources conservation and recycling.