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[各种景观综合体中的土壤有机碳的空间差异化特征和驱动因素]

Chen-Chen Kong¹, Fang Yan², Wei-Rui Wang²

¹School of Earth and Environment, Anhui University of Science & Technology, Huainan 232001, China.

Huan jing ke xue= Huanjing kexue

|March 20, 2025

概括

地形是北京土壤有机碳 (SOC) 空间变化的主要驱动因素.

科学领域:

农业科学农业科学
土壤科学土壤科学
环境科学环境科学

背景情况:

土壤有机碳 (SOC) 对土壤健康和碳封存至关重要.
了解SOC的空间变化是准确评估土壤碳库存的关键.
区域农业用地管理需要了解SOC分布和影响因素.

研究的目的:

研究SOC在北京农业景观中的空间差异化.
识别和分析影响SOC内容和库存的驱动因素.
探索各种环境因素对SOC的直接和间接影响.

主要方法:

利用长期监测数据和现场采样进行SOC分析.
使用地理探测器和地理加权回归用于空间分析.
构建了一个结构方程模型来确定直接和间接的因素影响.

主要成果:

在不同的景观综合体中,SOC含量差异很大 (6.2328.26 g·kg−1).
气候,地形,土壤母体材料,土地利用和生物质是SOC的重要驱动因素.
地形学对SOC空间异质性产生了最强的直接影响,影响了山区和平原地区的SOC含量.

结论:

地形因素是北京农业用地的SOC空间异质的主要驱动因素.
温度和土地类型也直接影响SOC,在森林地区SOC较高,在耕地较低.
地形学通过温度和土地类型的间接影响进一步塑造了SOC分布,为土壤碳库存评估提供了关键的参考.

关键词:

农业用地农业用地农业用地驱动因素驱动因素驱动因素影响路径影响路径.景观是一个复杂的复杂景观.土壤有机碳 (SOC) 是土壤中的有机碳.空间变化的空间变化.

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