湿地松林分结构调整对土壤活性有机碳的影响

应用生态学报

湿地松林分结构调整对土壤活性有机碳的影响

谭桂霞^1,2,刘苑秋^2**,李莲莲²,刘武²,昝玉亭²,霍炳南²,何木姣²

(¹江西农业大学理学院, 南昌 330045; ²江西农业大学林学院, 南昌 330045)

出版日期:2014-05-18 发布日期:2014-05-18

Effects of stand structure regulation on soil labile organic carbon in Pinus elliottii plantation.

TAN Gui-xia^1,2, LIU Yuan-qiu², LI Lian-lian², LIU Wu², ZAN Yu-ting², HUO Bing-nan², HE Mu-jiao²

(¹College of Science, Jiangxi Agricultural University, Nanchang 330045, China; ²College of Forestry, Jiangxi Agricultural University, Nanchang 330045, China)

Online:2014-05-18 Published:2014-05-18

摘要/Abstract

摘要：

以21 a湿地松纯林为对照，研究了间伐后补植阔叶树(间伐补阔，补植枫香)对不同年限(3、6、9 a)湿地松林分和21 a湿地松×枫香混交林土壤活性有机碳的影响.结果表明：间伐补阔后，6和9 a湿地松林分的土壤可溶性有机碳(DOC)、易氧化有机碳(ROC)和微生物生物量碳(MBC)含量均比21 a湿地松纯林显著增高；21 a湿地松×枫香混交林的土壤各活性碳组分含量显著高于3、6、9 a湿地松林分，其DOC、ROC和MBC含量分别比21 a湿地松纯林增加113.1%、53.3%和54.6%.说明间伐补阔结构调整是改善人工湿地松纯林土壤生态功能的有效措施.

Abstract: Taking 21-year-old Pinus elliottii pure plantation as the control, effects of enrichment planting with broadleaf trees (Liquidambar fornosana) after thinning the conifer trees (P. elliottii) on soil labile organic carbon of different plantations, including 3-year-old, 6-year-old, 9-year-old P. elliottii and 21-year-old P. elliottii-L. fornosana mixed plantations, were investigated. The results showed that the contents of soil dissolved organic carbon (DOC), readily oxidizable organic carbon (ROC), and microbial biomass carbon (MBC) significantly increased in the 6-year-old and 9-year-old plantations compared with those in the 21-yearold P. elliottii pure plantation. Soil labile organic carbon contents in the 21-year-old P. elliottii-L. fornosana mixed plantation increased significantly than those in 3-year-old, 6-year-old, 9-year-old stands, and the DOC, ROC and MBC contents increased by 113.1%, 53.3% and 54.6%, respectively, compared with those in the 21-year-old P. elliottii pure plantation. The results suggested that replanting with broadleaf trees are an effective measure to improve the soil ecological function in pure P. elliottii plantation.

谭桂霞1,2,刘苑秋2**,李莲莲2,刘武2,昝玉亭2,霍炳南2,何木姣2. 湿地松林分结构调整对土壤活性有机碳的影响[J]. 应用生态学报.

TAN Gui-xia1,2, LIU Yuan-qiu2, LI Lian-lian2, LIU Wu2, ZAN Yu-ting2, HUO Bing-nan2, HE Mu-jiao2. Effects of stand structure regulation on soil labile organic carbon in Pinus elliottii plantation.[J]. Chinese Journal of Applied Ecology.