基于数量化理论Ⅰ多因子对森林土壤有机碳密度的影响分析

Influence Analysis of Soil Organic Carbon Density in Forest Based on Quantification Theory Ⅰ

森林土壤有机碳在全球碳循环与收支中占主导地位,探究多因子交互作用对土壤有机碳密度的影响,对精确评估土壤有机碳储量、科学预测气候变化以及制定应对气候变化的策略具有重要意义。研究依托国家森林资源清查样地,在江西省选择典型样地进行样地调查和土壤样品采集,运用数量化理论Ⅰ,探讨多因子对土壤有机碳密度的影响,结果表明:林分类型、龄组、海拔、坡向、坡位、土壤类型6个因子是影响土壤有机碳密度的主导因子;并运用数量化理论Ⅰ,构建了林分类型、龄组、海拔、坡向、坡位、土壤类型6个主导因子与森林土壤有机碳密度之间的估算模型。

Soil organic carbon density in forest plays a dominant role in global carbon cycle and balance.Exploring the influence of the interaction of multiple factors on soil organic carbon density has important significance to assessment of soil organic carbon storage,scientific prediction of climate change and strategies to address climate change.This study,based on national forest inventory plots,choosing typical sample plots to carry out surveys and soil sampling,studied the effects of many factors on soil organic carbon density. The results showed that forest type,age group,altitude,aspect,slope position,soil type were dominate factos affecting soil organic carbon density.Anestimation model between six dominant factors,mamely,forest type,age group,elevation,aspect,slope position,soil type was established.