21 世纪以来中国森林面积不断恢复

IF 4.6 1区 地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY Geophysical Research Letters Pub Date : 2024-11-24 DOI:10.1029/2024gl110312
Xuexin Wei, Ronggao Liu, Yang Liu, Jiaying He, Jilong Chen, Lin Qi, Yanlian Zhou, Yuanwei Qin, Chaoyang Wu, Jinwei Dong, Xiangming Xiao, Jingming Chen, Quansheng Ge
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引用次数: 0

摘要

据报道,中国是地球绿化的领先国家。然而,利用遥感数据捕捉森林覆盖率的逐步恢复并区分树木和草本植被的贡献是一项挑战。我们利用 MODIS 时间序列数据开发了一种新的林木覆盖率产品(GLOBMAP FTC China),以研究 2000-2022 年期间中国森林的变化规律。该年度产品与中国国家森林资源清查结果高度一致。我们发现,中国每年的森林面积从 2000 年的∼154.47 万公顷增加到 2015 年的∼236.01 万公顷,增幅明显(∼4 万公顷/年)。在 2015-2022 年期间,这一速度减缓了 50%(每年 200 万公顷)。森林恢复主要始于 2000-2004 年,并于 2015 年达到饱和。这主要得益于森林保护和恢复项目带来的树木覆盖率增长(92%)。我们的研究结果可为该国的森林管理和实现碳中和提供支持。
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Forest Areas in China Are Recovering Since the 21st Century
China is reported as the leading country in the Earth's greening. However, it is a challenge to capture the gradual recovery in forest cover and distinguish the contribution of trees from herbaceous vegetation using remote sensing data. We developed a new fractional tree cover product (GLOBMAP FTC China) from MODIS time series data to investigate change patterns of China's forests during 2000–2022. This annual product showed high consistency with China's National Forest Inventory. We found a significant increase (∼4 Mha/year) in the annual forest area in China from ∼154.47 Mha in 2000 to ∼236.01 Mha in 2015. This rate then slowed by 50% in 2015–2022 (∼2 Mha/year). The forest recovery primarily started in 2000–2004, and reached saturation in 2015. It was primarily contributed by the tree cover gain (92%) from forest conservation and restoration programs. Our findings can support forest management and carbon neutrality achievement for the country.
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来源期刊
Geophysical Research Letters
Geophysical Research Letters 地学-地球科学综合
CiteScore
9.00
自引率
9.60%
发文量
1588
审稿时长
2.2 months
期刊介绍: Geophysical Research Letters (GRL) publishes high-impact, innovative, and timely research on major scientific advances in all the major geoscience disciplines. Papers are communications-length articles and should have broad and immediate implications in their discipline or across the geosciences. GRLmaintains the fastest turn-around of all high-impact publications in the geosciences and works closely with authors to ensure broad visibility of top papers.
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