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<p>The Taihang Mountains in North China are an important carbon-water ecosystem service supply area. Understanding the coupling effect and influencing mechanisms of mountain carbon sequestration as well as water conservation is essential for regional ecological restoration and sustainable development. In this study, we utilized models such as the coupled coordination degree model, the random forest and Geodetector to analyze the spatio-temporal changes as well as driving factors of carbon sequestration-water conservation coupling coordination in the Taihang Mountains. The results show that: (1) From 1990 to 2020, the carbon sequestration and water conservation capacity of the Taihang Mountains exhibited a spatial pattern with higher values in the southeast and central regions, while lower values in the northwest region. (2) The average coupling coordination degree from 1990 to 2020 was 0.23, which was overall low, with a fluctuating decreasing-rising-decreasing trend over time. The coupling coordination degree exhibited a pattern that is high in the middle and low in the periphery, with a fluctuating distribution that initially decreases and then increases with the increasing altitude. The overall trend of coupling coordination is degradation, with concentrated degradation in the northwest mountainous regions. (3) Precipitation and soil texture were identified as the main driving factors influencing coupling coordination, with the interaction between precipitation and soil sand content showing the strongest explanatory power, while that among topography, vegetation and human activities had relatively low explanatory power. Therefore, enhanced protection and the continuous monitoring of vegetation and soil environments in the Taihang Mountains are essential, with particular emphasis on ecological restoration in areas experiencing a persistent degradation of carbon-water coupling. This study can provide assistance in monitoring and managing carbon sink and water resources in the mountains, meanwhile mitigating potential adverse impacts on human well-being.</p>

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Precipitation and soil texture dominate the spatiotemporal changes in the carbon-water coupling coordination in Taihang Mountains, China

  • 期刊论文

  • 发表日期：

    2025年3月18日

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  • Xin Li,
  • Yanmei Chen,
  • Suyan Li,
  • Xiangyang Sun,
  • Qi Liu,
  • Hongzhou Wang

摘要

The Taihang Mountains in North China are an important carbon-water ecosystem service supply area. Understanding the coupling effect and influencing mechanisms of mountain carbon sequestration as well as water conservation is essential for regional ecological restoration and sustainable development. In this study, we utilized models such as the coupled coordination degree model, the random forest and Geodetector to analyze the spatio-temporal changes as well as driving factors of carbon sequestration-water conservation coupling coordination in the Taihang Mountains. The results show that: (1) From 1990 to 2020, the carbon sequestration and water conservation capacity of the Taihang Mountains exhibited a spatial pattern with higher values in the southeast and central regions, while lower values in the northwest region. (2) The average coupling coordination degree from 1990 to 2020 was 0.23, which was overall low, with a fluctuating decreasing-rising-decreasing trend over time. The coupling coordination degree exhibited a pattern that is high in the middle and low in the periphery, with a fluctuating distribution that initially decreases and then increases with the increasing altitude. The overall trend of coupling coordination is degradation, with concentrated degradation in the northwest mountainous regions. (3) Precipitation and soil texture were identified as the main driving factors influencing coupling coordination, with the interaction between precipitation and soil sand content showing the strongest explanatory power, while that among topography, vegetation and human activities had relatively low explanatory power. Therefore, enhanced protection and the continuous monitoring of vegetation and soil environments in the Taihang Mountains are essential, with particular emphasis on ecological restoration in areas experiencing a persistent degradation of carbon-water coupling. This study can provide assistance in monitoring and managing carbon sink and water resources in the mountains, meanwhile mitigating potential adverse impacts on human well-being.