不同经营模式下硬阔叶混交林土壤有机碳含量分析

Analysis of Soil Organic Carbon Content of Hard Broad-leaved Mixed Forest Under Different Operation Mode

测定并分析了不同经营模式下硬阔叶混交林的土壤有机碳含量,结果显示:采伐强度和采伐后是否更新都对土壤有机碳含量有显著影响,中度采伐的硬阔叶混交林土壤有机碳含量较高,弱度和强度采伐都会对造成土壤有机碳含量的减少;采伐后更新的林分土壤中有机碳含量较未更新和对照的林分高,表层土壤的有机碳含量较深层土壤高。

The article tests and analyzes the soil organic carbon content of hard broad-leaved mixed forest under different operating modes.The results show that the cutting intensity and updating have significant influence on the soil organic carbon content.The soil organic carbon content of the hard broad-leaved mixed forest under moderate cutting is higher.The weak and heavy cutting both cause the decrease of soil organic carbon content.The soil organic carbon content in updating stand after cutting is higher than that in the not updated stand and the contrast group.In addition,organic carbon content of surface soil is higher than that of deeper soil.