期刊论文

中文

土壤通报

0564-3945

2014

45

6

1483-1490

10.19336/j.cnki.trtb.2014.06.030

国家林业局林业公益性行业科研专项(201304317) 国家自然科学基金资助项目(31170426) 国家林业局林业科技推广项目([2012]61号)资助

本校为第一机构

为了解亚热带天然次生林保护对森林土壤有机碳库的影响,研究了湘中丘陵区杉木人工林和3种天然次生林(马尾松 + 石栎针阔混交林、南酸枣落叶阔叶林、石栎 + 青冈常绿阔叶林)土壤水溶性有机碳(DOC)含量季节动态及其与土壤自然含水率、pH、养分含量的相关性。结果表明:土壤DOC含量0 ~ 15 cm土层高于15 ~ 30 cm 土层,秋季土层之间的含量差异最小,土壤DOC 的分配比例15 ~ 30 cm 土层高于0 ~ 15 cm 土层;马尾松 + 石栎针阔混交林、南酸枣落叶阔叶林、石栎 + 青冈常绿阔叶林土壤DOC 含量分别较杉木人工林高3.15% ~ 9.81%,3.85% ~ 8.19%和11.24% ~ 12.00%,夏季不同森林类型之间的含量差异最大;4种森林土...

In order to improve the understanding of how natural secondary forests conservation affects soil carbon pool,a study was conducted to examine the seasonal variation of soil dissolved organic carbon(DOC) and its correlations with soil moisture content, p H, nutrient contents in four subtropical forests(i.e. Cunninghamia lanceolata plantation forest, Pinus massoniana+ Lithocarpus glaber mixed forest, Choerospondias axillaries deciduous broad leaved forest,and L. glaber + Cyclobalanopsis glauca evergreen broad-leaved forest) in hilly areas of central Hunan, China. The results showed that DOC cont...