| Concentrations and seasonal dynamics of dissolved organic carbon in forest floors of two plantations （Castanopsis kawakamii and Cunninghamia lanceolata） in subtropical China |
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| 基金项目： | This study was supported by the Teaching and Research Award program for M0E P.R.C. （TRAP0YT） |
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| 摘 要： |
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| 关 键 词： | 溶解有机碳 DOC 森林 人造林 杉木 季节变化 湿度 温度 生物活性 |
| 文章编号： | 1007-662X（2005）03-0205-04 |
| 收稿时间： | 2004-10-27 |
| 修稿时间： | 2004-12-23 |
Concentrations and seasonal dynamics of dissolved organic carbon in forest floors of two plantations (Castanopsis kawakamii andCunninghamia lanceolata) in subtropical China |
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| Authors: | Zhang Jiang-shan Guo Jian-fen Chen Guang-shui Qian Wei |
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| Institution: | (1) Research Institute of Environmental Science, Fujian Normal University, 350007 Fuzhou, P.R. China;(2) Key Laboratory of Subtropical Resources and Environments of Fujian Province, 350007 Fuzhou, P.R. China |
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| Abstract: | The concentrations and seasonal dynamics of DOC in forest floors of monoculture plantations ofCastanopsis kawakamii and Chinese fir (Cunninghamia lanceolata) were assessed in Sanming, Fujian, China (26°11′30″N, 117°26′00″E). Forest floor samples were taken in January, April, July
and October in 2002 and divided into undecomposed material (horizon Oi), partially decomposed organic material (horizon Oe),
and fully decomposed organic material (horizon Oa). Upon collection, DOC concentrations of samples were analyzed by a High
Temperature TOC. The results showed that the annual average DOC concentration of Chinese fir (1341.7 mg·kg−1) in the forest floor was higher than that ofCastanopsis kawakamii (1178.9 mg·kg−1). Difference in DOC concentrations was observed among three horizons of the forest floor. DOC concentration of forest floor
in the two forests was the highest in horizon Oe. Seasonal trends of DOC concentrations in different horizons of forest floors
were similar and the maximal value occurred in autumn (or winter). The concentration and temporal change of DOC in studied
forests were probably related to the variation in moisture, temperature, biological activity and quantity of organic matter
in the forest floor.
Foundation item: This study was supported by the Teaching and Research Award program for MOE P.R.C. (TRAPOYT)
Biography: ZHANG Jiang-shan (1946-), male, Researcher in Fujian Normal University, Fuzhou 350007, P.R. China.
Responsible editor: Zhu Hong |
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| Keywords: | Dissolved organic carbon (DOC) Seasonal dynamics Forest floor Castanopsis kawakamii Cunninghamia lanceolata Monoculture plantation |
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