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陆地碳汇的功能在中国西南地区的基石类型之间存在差异

Fusheng Jiao¹, Xiaojuan Xu², Peng Xue¹

¹School of Geography, Nanjing Normal University, Nanjing, 210023, China.

Journal of environmental management

|January 12, 2025

概括

在中国西南地区,陆地碳沉降.

科学领域:

环境科学环境科学
生态生态学生态生态学
气候科学气候科学

背景情况:

陆地生态系统作为关键的碳汇,吸收大气中的二氧化碳.
了解这些碳汇的稳定性对于准确的气候变化预测至关重要.
卡斯特地区是全球重要的碳汇,但它们的稳定性仍然不太清楚.

研究的目的:

为了评估中国西南部的地地区陆地碳汇的稳定性.
确定碳汇稳定性和主要气候驱动因素的空间模式.
为了比较不同类型的基石的稳定性:非岩,不连续碳酸盐岩 (DCR) 和连续碳酸盐岩 (CCR).

主要方法:

分析生态系统净生产率 (NEP) 的年度变化 (IAV).
在非岩,DCR和CCR基岩分类中对碳汇稳定性的比较.
根据基岩类型确定影响稳定性的气候驱动因素.

主要成果:

卡斯特地区的净生态系统生产率 (NEP) 较高,但稳定性往往较低.
观察到一个反向的关系:快速增强的碳汇与不稳定性相关,特别是在地地区.
稳定的气候驱动因素有所不同:非卡斯特地区的水量,卡斯特地区的温度 (DCR对温度敏感,CCR对温度变化敏感).

结论:

卡斯特地区的碳汇稳定性是复杂的,受到基岩类型和气候的影响.
碳捕获的快速增加并不能保证稳定性,尤其是在岩环境中.
碳捕获的有效管理需要考虑地质和气候因素.

关键词:

气候变化气候变化气候变化年间变化 (IAV)净生态系统生产率 (NEP)稳定的稳定性稳定的稳定性

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