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在典型的覆盖地区植树植树后,对深层土壤碳的多变量和规模依赖的控制

Ruifeng Li¹, Xuanhua Zhang¹, Wangjia Ji¹

¹State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China.

Journal of environmental management

|April 27, 2024

概括

森林植被显著增加了深层土壤中的土壤有机碳 (SOC) 和无机碳 (SIC),特别是在种植园下. 这些发现为干旱地区的可持续森林管理提供了关键的见解.

科学领域:

土壤科学土壤科学
生态生态学生态生态学
环境科学环境科学

背景情况:

植树增加了土壤的碳捕获,但深层土壤的碳动态 (>1m) 仍未得到充分探索.
了解深层土壤有机碳 (SOC) 和无机碳 (SIC) 的多变量控制至关重要,特别是在植根深的植物和厚厚的毒区的地区.

研究的目的:

在不同土地使用类型 (农田,草地,柳树,树) 的0-18米深的土壤中调查SOC和SIC的多变量控制.
通过使用先进的分析模型,探索多个因素对深层土壤碳变化的综合影响.

主要方法:

利用多波段连贯性和结构方程模型来分析影响深层土壤碳的因素.
检查了不同土地使用类型的土壤概况,在18米深的沉积物中.

主要成果:

土壤无机碳 (SIC) 密度 (425.4公斤米−2) 显著超过土壤有机碳 (SOC) 密度 (53.1公斤米−2),深度取决于变化.
与农田相比,树种植园增加了0-6m层的SOC和SIC密度,而草原和柳树显示出无意义的影响.
SOC变异在0-6m层中突出,而SIC变异主要在6-12m层中观察到.

结论:

总和磁性易感性是SOC密度的关键驱动因素,而磁性易感性和水含量影响SIC.
SOC通过改善节水和电导率,对SIC沉积产生积极影响.
研究结果提供了对植树造成的深层碳循环的关键见解,有助于干旱地区的可持续森林管理.

关键词:

土地使用转换,土地使用转换.洛斯高原 (Loess Plateau) 是一个高原.土壤碳封存土壤碳封存结构方程模型的结构方程模型.波形连贯性波形连贯性的一致性.

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相关概念视频

The Soil Ecosystem

The Soil Ecosystem

Plants obtain inorganic minerals and water from the soil, which acts as a natural medium for land plants. The composition and quality of soil depend not only on the chemical constituents but also on the presence of living organisms. In general, soils contain three major components: