作　　者： ; ; ; ;

机构地区： 华南农业大学林学院

出　　处： 《湖南林业科技》 2013年第3期18-22,共5页

摘　　要： 对木荷、尾叶桉、湿地松3种人工林的土壤碳密度进行研究。结果表明:不同林分的土壤碳密度存在差异,木荷、尾叶桉、湿地松林地1999年的土壤碳密度分别为181.13 t/hm2、34.21 t/hm2和100.35 t/hm2,2012年的分别为237.94 t/hm2、92.03 t/hm2和144.39 t/hm2,其大小排序为木荷林地>湿地松林地>尾叶桉林地,其中以乡土树种木荷林地的土壤有机碳密度最高。3种林地的土壤有机碳密度均显著增加,其中尾叶桉林地的增幅最大。 Soil carbon density was studied in Schima superba, Eucalypys urophylla and Pinus elliottii plantations. Results showed that the soil carbon density ofS. superba, E. urophyUa and P. eUiottii woodlands in 1999 was 181.13 t/hm2 , 34.21 t/hm^2 and 100. 35 t/ hm^2 respectively, and that was 237.94 t/hm^2 , 92.03 t/hm^2 and 144.39 t/hm^2 in the three woodland types in 2012 respectively, with the order of S. superba woodland 〉 P.eUiottii woodland 〉 E. urophylla woodland, among them the indigenous tree species S. superb was the highest. Soil organic carbon density of the three woodlands significantly increased, with the greatest increment in the E. urophyUa woodland.

关 键 词： 土壤有机碳 有机碳密度 人工林

领　　域： [农业科学]