生态学杂志2017，Vol.36Issue(3)：609-615,7.DOI:10.13292/j.1000-4890.201703.002
间伐对马尾松人工林土壤活性有机碳的影响
Effects of thinning intensity on soil active organic carbon in Pinus massoniana plantation
摘要
Abstract
We studied the effects of thinning on soil active organic carbon content and their proportion in total organic carbon in a 29-year-old Pinus nassoniana plantation after nine years of treatment.Four thinning intensities included:light (25％,LIT),moderate (45％,MIT),high (65％,HIT),and a control (0％,CK).The results showed that compared with the CK,MIT significantly increased soil total organic carbon (TOC) content,while HIT significantly decreased TOC content.The responses of soil particulate organic carbon (POC) and readily oxidized carbon (ROC) to thinning were consistent with the TOC.The light fraction organic carbon (LFOC) content of soil was significantly decreased under the three kinds of thinning intensity in the order of HIT＜ LIT ＜ MIT ＜ CK.The distribution proportion of POC,LFOC and ROC in the TOC ranged from 30.83％ to 64.59％,10.40％ to 26.92％ and 3.61％ to 4.62％,respectively.Thinning significantly decreased the distribution proportion of LFOC in the TOC.However,thinning had no significant effect on the distribution proportion of ROC in the TOC.MIT significantly decreased the distribution proportion of POC in the TOC.Compared to the CK,MIT was advantageous in the accumulation of TOC with enhanced stability of soil organic carbon.关键词
马尾松人工林/间伐强度/土壤总有机碳/土壤活性有机碳Key words
Pinus massoniana plantation/thinning intensity/soil total organic carbon/soil active organic carbon引用本文复制引用
翟凯燕,马婷瑶,金雪梅,袁在翔,陈斌,关庆伟..间伐对马尾松人工林土壤活性有机碳的影响[J].生态学杂志,2017,36(3):609-615,7.基金项目
国家林业公益性行业科研专项项目(201104075)资助. （201104075）
