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对浙江省沿海基岩质海岸防护林7种不同林分类型土壤有机碳库进行测定。结果表明:7种林分类型土壤总有机碳含量、土壤微生物量碳含量、水溶性有机碳含量、土壤矿化碳含量和土壤易氧化碳含量均随土层增加呈递减趋势;相关分析表明,不同林分类型土壤活性有机碳间存在极显著的相关性;对不同林分类型土壤活性有机碳库进行综合评价可知,7种不同的林分类型土壤活性有机碳库分布可以分为4类;北江荛花+檵木混交林归为一类,属于土壤活性有机碳库分布最高一级,枫香纯林、湿地松+木荷混交林、枫香+湿地松混交林归为一类,属于土壤活性有机碳库分布较高一级,化香树纯林、湿地松纯林归为一类属于土壤活性有机碳库分布一般级,无林地归为一类,属于土壤活性有机碳库分布较低一级。
The soil organic carbon pools of seven different forest types in coastal rocky shelterbelts in Zhejiang Province were determined. The results showed that soil total organic carbon content, soil microbial biomass carbon content, water-soluble organic carbon content, soil mineralized carbon content and soil vulnerable carbon content decreased with the increase of soil layers in seven forest types. Correlation analysis showed that soil organic carbon content, There was a significant correlation between soil active organic carbon in different stand types. Comprehensive evaluation of soil active organic carbon pool in different stand types showed that the distribution of soil active organic carbon pool in seven stand types could be divided into four categories. The mixed forest of Pinus elliottii and Alnus cremastogyne was classified into one category, which belonged to the highest level of soil active organic carbon pool. The mixed forest of Liquidambar formosana, Slash Pine + Schima superba, The distribution of soil active organic carbon pool was higher. The pure forests of Acerbity and Pinus elliottii were classified as the general class of soil active organic carbon pool. The non-forest land was classified into one category, and the distribution of soil active organic carbon pool Lower level.