Spatial distribution patterns and hotspots of extreme agro-climatic resources in the Horro Guduru Wollega Zone, Northwestern Ethiopia

IF 2.9 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Environmental Monitoring and Assessment Pub Date : 2024-11-20 DOI:10.1007/s10661-024-13277-8

Dirribsa Hunduma Temesgen, Fedhasa Benti Chalchissa

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Abstract

Extreme temperatures and rainfall influence crop yields, soil health, and natural ecosystems. This study examined the extent of extreme agro-climatic factors in Northwestern Ethiopia, with a focus on identifying vulnerability hotspots. Rainfall and temperature data from 1982 to 2022 were collected from eight meteorological stations of the Ethiopian Meteorological Institute, and missing values and outliers were corrected using imputation and Z-scores. ClimPact2 software extracted agro-climatic indicators, and trend analyses were performed using the Mann–Kendall test and Sen’s slope. Consecutive dry days (CDD) ranged from 27 in Fincha’a to 57 in Obora, with Obora showing an annual increase of 2.033 days. Consecutive wet days (CWD) varied from 12 in Obora to 138 in Fincha’a. A positive trend in the warmest maximum temperatures (TXx) and a negative trend in the cold night index (TN10P) were observed. The Amuru District recorded the highest vulnerability index at 61, with most districts ranging from 42 to 60. These variations may significantly affect agriculture and water management in the region, necessitating the adoption of heat-tolerant crops and improved irrigation practices to enhance climate resilience.

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埃塞俄比亚西北部 Horro Guduru Wollega 区极端农业气候资源的空间分布模式和热点地区

极端气温和降雨会影响作物产量、土壤健康和自然生态系统。本研究考察了埃塞俄比亚西北部极端农业气候因素的影响范围，重点是确定易受影响的热点地区。研究人员从埃塞俄比亚气象研究所的八个气象站收集了 1982 年至 2022 年的降雨量和气温数据，并使用估算和 Z 值对缺失值和异常值进行了校正。ClimPact2 软件提取了农业气候指标，并使用 Mann-Kendall 检验和 Sen's 坡度进行了趋势分析。连续干旱日（CDD）从芬查阿的 27 天到奥波拉的 57 天不等，奥波拉每年增加 2.033 天。连续湿润日（CWD）从奥博拉的 12 天到芬查亚的 138 天不等。最热最高气温（TXx）呈上升趋势，寒夜指数（TN10P）呈下降趋势。阿穆鲁地区的脆弱性指数最高，为 61，大多数地区在 42 至 60 之间。这些变化可能对该地区的农业和水资源管理产生重大影响，因此有必要采用耐热作物和改进灌溉方法，以提高气候适应能力。

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来源期刊

Environmental Monitoring and Assessment 环境科学-环境科学

CiteScore

4.70

自引率

6.70%

发文量

1000

审稿时长

7.3 months

期刊介绍： Environmental Monitoring and Assessment emphasizes technical developments and data arising from environmental monitoring and assessment, the use of scientific principles in the design of monitoring systems at the local, regional and global scales, and the use of monitoring data in assessing the consequences of natural resource management actions and pollution risks to man and the environment.