| Belowground carbon balance and carbon accumulation rate in the successional series of monsoon evergreen broad-leaved forest |
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| 基金项目： | 中国科学院知识创新工程项目;中国科学院资助项目 |
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| 摘 要： | The belowground part of terrestrial ecosystem is a huge carbon pool. It is believed that of the total 2500Gt carbon stored in global terrestrial ecosystem, soil carbon storage within the 1 m surface layer ac- counts for 2000Gt, which is 4-fold of vegetation car- bon storage1,2]. Compared with the carbon in the vegetation, carbon in the deep soil layers is much more stable, and it will stay in soil profile permanentlyunless geological vicissitude occurs. Essentially, forest restoration is the…
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| 收稿时间： | 6 December 2004 |
| 修稿时间： | 3 May 2005 |
Belowground carbon balance and carbon accumulation rate in the successional series of monsoon evergreen broad-leaved forest |
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| Authors: | ZHOU Guoyi ZHOU Cunyu LIU Shuguang TANG Xuli OUYANG Xuejun ZHANG Deqiang LIU Shizhong LIU Juxiu YAN Junhua ZHOU Chuanyan LUO Yan GUAN Lili LIU Yan |
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| Institution: | 1. Dinghushan Forest Ecosystem Research Station, Chinese Academy of Sciences, Guangzhou 510650, China
2. SAIC, EROS Data Center, U.S. Geological Survey, Sioux Falls, SD 57198, USA |
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| Abstract: | The balance, accumulation rate and temporal dynamics of belowground carbon in the successional series of monsoon evergreen
broadleaved forest are obtained in this paper, based on long-term observations to the soil organic matter, input and standing
biomass of litter and coarse woody debris, and dissolved organic carbon carried in the hydrological process of subtropical
climax forest ecosystem—monsoon evergreen broad-leaved forest, and its two successional forests of natural restoration—coniferous
and broad-leaved mixed forest and Pinus massoniana forest, as well as data of root biomass obtained once every five years and respiration measurement of soil, litter and coarse
woody debris respiration for 1 year. The major results include: the belowground carbon pools of monsoon evergreen broad-leaved
forest, coniferous and broad-leaved mixed forest, and Pinus massoniana forest are 23191 ± 2538 g · m−2, 16889 ± 1936 g · m−2 and 12680 ± 1854 g · m−2, respectively, in 2002. Mean annual carbon accumulation rates of the three forest types during the 24a from 1978 to 2002
are 383 ± 97 g · m−2 · a−1, 193 ± 85 g · m−2 · a−1 and 213 ± 86 g · m−2 · a−1, respectively. The belowground carbon pools in the three forest types keep increasing during the observation period, suggesting
that belowground carbon pools are carbon sinks to the atmosphere. There are seasonal variations, namely, they are strong carbon
sources from April to June, weak carbon sources from July to September; while they are strong carbon sinks from October to
November, weak carbon sinks from December to March. |
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| Keywords: | monsoon evergreen broad-leaved forest successional series of restoration belowground carbon pool accumulation rate |
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