罗浮栲天然林土壤可溶性有机碳的剖面分布及季节变化

生态学杂志

罗浮栲天然林土壤可溶性有机碳的剖面分布及季节变化

汪伟^1,2;杨玉盛¹;陈光水¹;郭剑芬¹;钱伟¹

¹福建省亚热带资源与环境重点实验室, 福州 350007；²福建师
范大学化学与材料学院, 福州 350007

收稿日期:2007-09-07 修回日期:1900-01-01 出版日期:2008-06-10 发布日期:2008-06-10

Profile distribution and seasonal variation of soil dissolved organic carbon in natural Castanopsis fabric forest in subtropical China.

WANG Wei^1,2;YANG Yu-sheng¹;CHEN Guang-shui¹;GUO Jian-fen¹; QIAN Wei¹

¹Key Laboratory of Subtropical Resources and Environments of Fujian Pro
vince, Fuzhou 350007, China;²College of Chemistry and Materials Science,
Fujian Normal University, Fuzhou 350007, China

Received:2007-09-07 Revised:1900-01-01 Online:2008-06-10 Published:2008-06-10

摘要/Abstract

摘要： 对罗浮栲天然常绿阔叶林土壤1 m剖面内可溶性有机碳(DOC)进行了研究，结果表明: 林地土壤DOC的平均含量随土层深度增加呈下降趋势，表层(0～5 cm)土壤DOC的平均含量为55.69 mg·kg^-1，分别与其他土层间含量存在显著性差异(P<0.01)；不同土层的DOC含量占土壤有机碳的比例也随土层深度增加而降低，1 m剖面内DOC的平均含量占土壤有机碳含量的0.14%；各季节土壤剖面DOC含量随土层深度增加均呈下降趋势，冬季下降趋势最为显著，夏季下降趋势相对平缓。土壤剖面DOC含量的季节变化为:冬季>秋季>春季>夏季，各季节不同土层DOC含量占土壤有机碳比例的变化趋势均不明显；不同土层土壤DOC含量的季节变化差异显著(P<0.01)，表层(0～5 cm)土壤间差异最为明显。

关键词: 阿勒泰地区, 草地类型, 生态服务价值, 草地功能, 分类经营

Abstract: The study on the profile (0-100 cm) distribution and seasonal variation of soil dissolved organic carbon (DOC) in a natural Castanopsis fabric forest in Jian’ou of Fujian Province showed that the mean concentration of DOC had a decreasing trend with the increase of soil depth. In 0-5 cm soil layer, the mean concentration of DOC was 55.69 mg·kg^-1, being significantly higher than that in other soil layers (P<0.01). The ratio of DOC to soil organic carbon (SOC) also decreased with increasing soil depth, and its mean value in the profile was about 0.14%. In all seasons, the concentration of DOC in the profile had a decreasing trend with the increase of soil depth, which was most obvious in winter. The seasonal variation of DOC concentration in the profile was in the order of inter>autumn>spring>summer. There was a less variation of DOC/SOC ratio in different soil layers among different seasons. Different soil layers had significant differences in the seasonal variation of DOC, which was most significant in 0-5 cm soil layer (P<0.01).

Key words: Alatai region, Grassland type, Ecological service value, Grassland function, Classified management

汪伟;杨玉盛;陈光水;郭剑芬;钱伟 . 罗浮栲天然林土壤可溶性有机碳的剖面分布及季节变化[J]. 生态学杂志.

WANG Wei^1,2;YANG Yu-sheng¹;CHEN Guang-shui¹;GUO Jian-fen¹; QIAN Wei¹ . Profile distribution and seasonal variation of soil dissolved organic carbon in natural Castanopsis fabric forest in subtropical China. [J]. cje.

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