极端温度变化对中国沼泽植被覆盖度的影响

IF 5 2区地球科学 Q1 LIMNOLOGY

Limnology and Oceanography Letters Pub Date : 2025-09-12 DOI:10.1002/lol2.70065

Chen Ding, Xiangjin Shen

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引用次数: 0

摘要

中国的沼泽面积居世界第三位。中国湿地在区域水生态系统安全和碳循环中发挥着重要作用。了解极端气候变化对沼泽植被的影响对预测区域碳循环至关重要。利用NDVI和气象资料，分析了中国沼泽植被覆盖度的时空变化特征，以及极端温度变化对植被覆盖度的影响。结果表明，2001 - 2021年，中国湿地植被覆盖度在生长季显著增加（p < 0.01），增幅为2.6%/ 10年。极端高温和极端低温事件的减少都能增加中国沼泽植被覆盖度，但极端低温事件的减少对沼泽植被覆盖度增加的促进作用更为显著。本研究强调了极端高低温变化对中国沼泽植被覆盖度的非对称影响。

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Impacts of extreme temperature changes on fractional vegetation cover in marshes of China

China ranks third worldwide in terms of marsh areas. Marshes in China play an important role in regional aquatic ecosystem security and the carbon cycle. Understanding the impacts of extreme climatic changes on marsh vegetation is crucial for predicting the regional carbon cycle. Using the NDVI and meteorological data, we analyzed the spatiotemporal variation in fractional vegetation cover (FVC) and the impacts of extreme temperature changes on the marsh FVC in China. We observed that the marsh FVC during the growing season increased significantly (p < 0.01) by 2.6%/decade in China from 2001 to 2021. The reduction of extreme high‐temperature and extreme low‐temperature events can both increase marsh FVC in China, but the reduction of extreme low‐temperature events has a more significant promoting effect on the increase of marsh FVC. This study highlights the asymmetric effect of extreme high and low temperature changes on the marsh FVC in China.

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来源期刊

Limnology and Oceanography Letters Multiple-

CiteScore

10.00

自引率

3.80%

发文量

审稿时长

25 weeks

期刊介绍： Limnology and Oceanography Letters (LO-Letters) serves as a platform for communicating the latest innovative and trend-setting research in the aquatic sciences. Manuscripts submitted to LO-Letters are expected to present high-impact, cutting-edge results, discoveries, or conceptual developments across all areas of limnology and oceanography, including their integration. Selection criteria for manuscripts include their broad relevance to the field, strong empirical and conceptual foundations, succinct and elegant conclusions, and potential to advance knowledge in aquatic sciences.