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从黄河流域的沉积物路径中SOC分解的侵蚀引起的碳排放量量化

Jinwei Guo^1,2, Yuchun Yang³, Mukesh Kumar Soothar³

¹Shanxi Provincial Department-Municipal Key Laboratory Cultivation Base for Quality Enhancement and Utilization of Shangdang Chinese Medicinal Materials, School of Pharmacy, Changzhi Medical College, Changzhi, 046000, Shanxi, China. guojinwei@nwafu.edu.cn.

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|January 7, 2026

概括

黄河流域的土壤侵蚀在运输过程中从土壤有机碳 (SOC) 分解中释放出大量的二氧化碳 (CO2). 防止侵蚀的努力必须考虑这些碳排放,以准确计算气候变化.

科学领域:

环境科学环境科学
地球科学地球科学地球科学
气候科学气候科学

背景情况:

土壤侵蚀导致土壤损失,并重新分配土壤有机碳 (SOC).
侵蚀释放二氧化碳 (CO2),有助于区域碳排放.
过去在黄河流域 (YRB) 的努力主要集中在侵蚀防治上,对相关的碳排放的关注有限.

研究的目的:

在YRB中量化沉积物再分配和相关的碳排放.
将中国土壤损失方程 (CSLE) 与运输有限沉积物输送 (TLSD) 模型集成.
分析来自五种沉积过程的碳排放.

主要方法:

整合了中国土壤损失方程 (CSLE) 与运输有限沉积物输送 (TLSD) 模型.
校准了CSLE-TLSD模型,实现了0.5690.0的纳什-萨克利夫效率.
在运输过程中量化的沉积物再分配和SOC分解.

主要成果:

28.50 ±4.43%的侵蚀SOC在运输过程中分解,在YRB (1990-2020) 中释放2.48 ±0.11 × 10^8CO2.
观察到显著的空间差异:上游地区显示SOC分解率为49.66 ± 4.40%,而中游地区则为22.96 ± 10.35%.
山西,山西,山东,青海和甘地区的碳排放率最高.

结论:

侵蚀驱动的碳流动动态对于陆地碳核算至关重要.
这些发现特别适用于具有强烈人为改造的盆地.
纳入这些动态对于准确的气候变化评估是必要的.

关键词:

碳排放排放碳排放排放排放 SOC分解速度的速度是多少沉积物转移沉积物的转移土壤侵蚀导致土壤侵蚀.黄河流域黄河流域黄河流域

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相关概念视频

The Carbon Cycle

The Carbon Cycle

Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.