| 北京主要森林类型碳储量变化分析 |
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| 引用本文： | 孙 翀,刘琪璟.北京主要森林类型碳储量变化分析[J].浙江农林大学学报,2013,30(1):69-75. |
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| 作者姓名： | 孙 翀 刘琪璟 |
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| 作者单位： | 1.北京林业大学 省部共建森林培育与保护教育部重点实验室，北京 100083 |
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| 摘 要： | 利用全国森林资源清查资料中的北京市部分，基于生物量转换因子法，通过建立不同森林类型蓄积量与生物量间的回归方程，估算出北京市不同时期森林的生物量和碳储量，并对碳储量的变化进行了分析。结果表明:北京市森林碳储量在5 a内由796万t增加到852万t，呈现增长的趋势，各森林类型碳储量的变化与相应森林类型面积变化呈正相关关系。在全市森林总碳储量中，栎类Quercus spp.，阔叶类，杨树Populus spp.在碳汇中起着重要的作用。树种年龄组成上的不合理很大程度上限制了北京的森林碳汇能力，幼龄林与中龄林面积大但是碳储量较低，成熟林碳储量所占比例较大，不同植被类型以及不同龄组的森林碳密度呈现略微下降的趋势，碳密度随着龄级的增长而增加，其他林分要素在碳汇中发挥着较为重要的作用。表4参20
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| 关 键 词： | 森林生态学 生物量转换因子 森林资源清查 碳储量 全球变化 |
| 收稿时间： | 2012-02-27; |
Carbon storage changes for major forest types in Beijing |
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| SUN Chong,LIU Qijing.Carbon storage changes for major forest types in Beijing[J].Journal of Zhejiang A&F University,2013,30(1):69-75. |
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| Authors: | SUN Chong LIU Qijing |
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| Affiliation: | 1.The Key Laboratory for Silviculture and Forest Conservation of Ministry of Education，Beijing Forestry University，Beijing 100083，China |
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| Abstract: | In order to clarify carbon storage changes for major forest types in Beijing，this research used the national forest inventory data surveyed by the State Forestry Administration of China to estimate biomass and carbon storage of forest ecosystems during a 5 year period for Beijing. Regression equations for timber volume of dominant tree species and biomass were established，and based on which the changes in carbon storage were assessed. Results indicated that forest carbon storage in Beijing rose from 7.96 million to 8.52 million tons within a 5 year period from 1998 to 2003 with changes in carbon storage of forest types and forest area being positively correlated. Quercus，Populus had a great effect on carbon storage. Improper composition of stand age limited the carbon sink capacity of Beijing. Young and middle-aged forests had a large area but only take over less than 30% of the total carbon storage，whereas nearly 50% for mature forests. Different vegetation types and carbon density of age structure showed a slight declining trend，while carbon density increased with the growth of the age structures，and other stand factors also play a important role in the carbon sink.［Ch，4 tab. 20 ref.］ |
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| Keywords: | forest ecology biomass expansion factor （BEF） forest inventory carbon storage global change |
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