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<p>Tropical forests have huge carbon sink capacity (CSC) and are susceptible to climate change, natural geographic conditions, anthropogenic activities, and so on. However, few studies have explored the interactions between them, especially for tropical forest areas. Moreover, the discussion on the impact of terrain factors (especially the slope aspect) on CSC is insufficient. Firstly, taking Xishuangbanna (XSBN) area as the study case, we estimated CSC, and investigated the spatio-temporal changes of CSC. Then, we constructed a comprehensive driver system of CSC and systematically analyzed the independent, interactive, and even triple interactive impacts of drivers on CSC. Finally, the targeted CSC enhancement and sequestration policies were proposed to mitigate climate change. The results show that: (1) The CSC has increased in XSBN since 2000, with an increase of 6.14%. Spatial analysis reveals consistently higher NPP and CSC values in western regions compared to eastern areas. (2) Multiple factors impact CSC jointly, with the order of driving intensity: NDVI&gt; vegetation type &gt; GDP&gt; population &gt; solar radiation &gt; precipitation &gt; slope &gt; aspect &gt; temperature &gt; DEM. (3) The interactions between NDVI and other factors have the greatest impact on CSC, especially the interaction with vegetation type. In terms of terrain (especially slope aspect), high levels of CSC occupy a larger area in semi-sunny slope. Based on the results, three strategies for CSC enhancement are proposed, i.e., targeted vegetation enhancement, interaction-optimized management, and zonal protection strategies. All the founding can provide scientific evidence on vegetation management, CSC enhancement, and regional sustainable development for tropical forests.</p> Graphical abstract <p></p>

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Multi-dimensional drivers and their interactions on carbon sink capacity in tropical forests: a case study of Xishuangbanna

  • 期刊论文

  • 发表日期：

    2026年6月2日

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  • Chao Wang,
  • Lijun Meng,
  • Xueting Zeng,
  • Hongyi Xie

摘要

Tropical forests have huge carbon sink capacity (CSC) and are susceptible to climate change, natural geographic conditions, anthropogenic activities, and so on. However, few studies have explored the interactions between them, especially for tropical forest areas. Moreover, the discussion on the impact of terrain factors (especially the slope aspect) on CSC is insufficient. Firstly, taking Xishuangbanna (XSBN) area as the study case, we estimated CSC, and investigated the spatio-temporal changes of CSC. Then, we constructed a comprehensive driver system of CSC and systematically analyzed the independent, interactive, and even triple interactive impacts of drivers on CSC. Finally, the targeted CSC enhancement and sequestration policies were proposed to mitigate climate change. The results show that: (1) The CSC has increased in XSBN since 2000, with an increase of 6.14%. Spatial analysis reveals consistently higher NPP and CSC values in western regions compared to eastern areas. (2) Multiple factors impact CSC jointly, with the order of driving intensity: NDVI> vegetation type > GDP> population > solar radiation > precipitation > slope > aspect > temperature > DEM. (3) The interactions between NDVI and other factors have the greatest impact on CSC, especially the interaction with vegetation type. In terms of terrain (especially slope aspect), high levels of CSC occupy a larger area in semi-sunny slope. Based on the results, three strategies for CSC enhancement are proposed, i.e., targeted vegetation enhancement, interaction-optimized management, and zonal protection strategies. All the founding can provide scientific evidence on vegetation management, CSC enhancement, and regional sustainable development for tropical forests.

Graphical abstract