Characterizing the dynamics of climate and native desert plants in Qatar

IF 2.6 3区 环境科学与生态学 Q2 ECOLOGY Journal of Arid Environments Pub Date : 2024-10-28 DOI:10.1016/j.jaridenv.2024.105274
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Abstract

This study aims to measure changes in climatic factors and their relationship to vegetation growth in Qatar to develop a plant-climate characterization for native desert plants. By analyzing Landsat satellite images from 1985 to 2022 and their relation to rainfall patterns, we found significant impacts of climatic variables on vegetation coverage, particularly after 1990. Increased drought seasons correlated with changes in annual temperature, dew point, and soil temperature. Vegetation growth depended not only on rainfall amount but also on the number of rainfall events and accumulation. Optimal rainfall events per year ranged from 10 to 15, with 70 mm being the threshold for healthy vegetation growth. However, the probability of rainfall events over 80 mm was less than 5%, while low rainfall seasons (1–17 mm) were more likely (90–99% chance). Additionally, vegetation cover varied between protected sites, indicating the complexity of arid lands influenced by factors like topography and soil type. These findings suggest a continued decrease in vegetation coverage, leading to more drought seasons and impacting water and food security. We recommend further research on supplementary irrigation to support native species, understand their seasonal growth stages, and better comprehend soil-plant-water connections and water requirements. This study's findings will also inform strategies for managing water resources in protected areas and help in designing policies aimed at mitigating the impacts of climate change on Qatar's fragile desert ecosystems.
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确定卡塔尔气候和本地沙漠植物的动态特征
本研究旨在测量卡塔尔气候因素的变化及其与植被生长的关系,从而为本土沙漠植物制定植物-气候特征描述。通过分析 1985 年至 2022 年的 Landsat 卫星图像及其与降雨模式的关系,我们发现气候变量对植被覆盖有显著影响,尤其是在 1990 年之后。干旱季节的增加与年气温、露点和土壤温度的变化相关。植被生长不仅取决于降雨量,还取决于降雨次数和累积量。最理想的年降雨量为 10 至 15 次,其中 70 毫米是植被健康生长的临界值。然而,降雨量超过 80 毫米的概率不到 5%,而降雨量较少的季节(1-17 毫米)的概率更高(90-99%)。此外,不同保护地的植被覆盖率也不尽相同,这表明干旱地区受地形和土壤类型等因素影响的复杂性。这些研究结果表明,植被覆盖率会持续下降,导致干旱季节增多,影响水和粮食安全。我们建议进一步开展补充灌溉研究,以支持本地物种,了解其季节性生长阶段,并更好地理解土壤-植物-水之间的联系和对水的需求。这项研究的结果还将为保护区的水资源管理策略提供参考,并有助于制定旨在减轻气候变化对卡塔尔脆弱的沙漠生态系统的影响的政策。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Arid Environments
Journal of Arid Environments 环境科学-环境科学
CiteScore
5.70
自引率
3.70%
发文量
144
审稿时长
55 days
期刊介绍: The Journal of Arid Environments is an international journal publishing original scientific and technical research articles on physical, biological and cultural aspects of arid, semi-arid, and desert environments. As a forum of multi-disciplinary and interdisciplinary dialogue it addresses research on all aspects of arid environments and their past, present and future use.
期刊最新文献
Investigating the impacts of climate variations and armed conflict on drought and vegetation cover in Northeast Syria (2000–2023) Corrigendum to “Bringing water values into play in the Atacama desert water crisis” [J. Arid Environ. (2024) 1–12 105256] When environment meets culture in the arid margin of the Southern Levant Hydrological dichotomy: Streamflow drought in dammed vs. undammed regions of the largest Indian Peninsular basin Characterizing the dynamics of climate and native desert plants in Qatar
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