复旦大学左志燕等研究了土壤水分保持在减缓气候变化中的重要性。这一研究成果发表在2024年2月27日出版的国际学术期刊《科学通报》上。

本研究使用气候模式模拟表明，在低排放情景下，保持当前的全球土壤湿度水平可显著缓解32.9%的土地变暖。这一行动还可以将达到1.5℃和2.0℃的关键变暖阈值推迟至少十年。至关重要的是，将土壤湿度保持在目前的水平，可以防止全球42%的土地受到明显的气候变化影响，这与预测的21世纪60年代之前会受到广泛影响的预测截然不同。

为了防止土壤干燥，研究人员建议在未来30年内，在中低纬度地区植树造林，作为增加地表水可用性的有效策略。这凸显了基于自然的土壤湿度管理解决方案的巨大潜力，有利于减缓气候变化和增强生态。

据悉，人们已经普遍认识到一个令人不安的反馈循环，即土壤干燥导致气候变热。

附：英文原文

Title: Importance of soil moisture conservation in mitigating climate change

Author: Zhiyan Zuo, Liang Qiao, Renhe Zhang, Deliang Chen, Shilong Piao, Dong Xiao, Kaiwen Zhang

Issue&Volume: 2024/02/27

Abstract: A troubling feedback loop, where drier soil contributes to hotter climates, has been widely recognized. This study, drawing on climate model simulations, reveals that maintaining current global soil moisture levels could significantly alleviate 32.9% of land warming under low-emission scenarios. This action could also postpone reaching critical warming thresholds of 1.5℃ and 2.0℃ by at least a decade. Crucially, preserving soil moisture at current levels could prevent noticeable climate change impacts across 42% of the Earth's land, a stark deviation from projections suggesting widespread impacts before the 2060s. To combat soil drying, afforestation in mid-to-low latitude regions within the next three decades is proposed as an effective strategy to increase surface water availability. This underscores the substantial potential of nature-based solutions for managing soil moisture, benefiting both climate change mitigation and ecological enhancement.

DOI: 10.1016/j.scib.2024.02.033

Source: https://www.sciencedirect.com/science/article/pii/S209592732400135X