广东罗浮山省级自然保护区不同林型土壤有机碳分布特征及碳储量研究

Distribution Characteristics of Soil Organic Carbon of Different Forest Types in Luofushan Nature Reserve in Guangdong Province and its Carbon Storage

森林土壤有机碳分布及碳储量特征是研究森林生态系统碳循环的基础。采用不同林型土壤样品室内分析方法,研究了罗浮山5种不同林型土壤中有机碳、碳储量分布特征及其与其他土壤理化性状关系。结果表明:保护区的土壤有机碳储量随海拔高度增加而降低,其中,华润楠-密花树常绿阔叶林的土壤有机碳储量最高,马尾松+木荷针阔混交林、黄樟+华润楠+青冈常绿阔叶林的土壤有机碳储量最低;各林型土壤有机碳与土壤容重、土壤的pH值呈显著负相关,与全氮、全磷呈显著正相关。

The distribution of forest soil organic carbon and carbon storage characteristics are the basis for studying the carbon cycle of forest ecosystems.The combination of field sampling and indoor analysis was used to study the distribution characteristics of organic carbon and carbon storage in five different forest types in Luofu Mountain.And its relationship with other soil physical and chemical properties.The results showed that the soil organic carbon storage in the reserve decreased with increasing altitude.Among them,soil organic carbon storageevergreen broad-leaved forest of Machiluschinensis+Rapanea neriifolia is the highest.soil organic carbon storge of Pinus massoniana+Schima superba mixed forest,Cinnamomum camphora+Machiluschinensis+Cyclobalanopsis glauca evergreen broad-leaved is the lowest;the soil organic carbon of each forest type is significantly negatively correlated with soil bulk density and soil pH,and positively correlated with total nitrogen and total phosphorus.