林分各器官生物量随林龄的变化规律——以杉木、马尾松人工林为例

doi:10.7523/j.issn.2095-6134.2005.2.008

摘要/Abstract

摘要：

基于中国文献资料的89块生物量样地以及在桂中的6块不同龄级样地实测数据,对南方人工林的代表树种———杉木、马尾松林分及各器官生物量随林龄的变化规律进行了探讨.分析结果表明,杉木、马尾松林分树干、地上生物量及林分总生物量均随林龄的增加而显著增加,枝条、根系生物量在马尾松林分中也随林龄显著增加,但在杉木林中则随林龄的增加逐渐趋向稳定,2种林分叶生物量与林龄的关系不密切.林分生物量的根冠比在杉木林中随林龄增加而逐渐降低并趋于稳定;在马尾松林中二者关系不密切.林分各器官生物量的年龄结构差异表明林龄对于森林植被碳蓄积的准确估算具有重要影响

关键词: 林龄, 碳蓄积, 生物量, 杉木, 马尾松

Abstract:

Forest biomass usually increases with stand age. However, biomass allocations to different components of trees vary greatly with stand age. In this paper, we synthesized and analyzed age effects on stand biomass allocations to different components in Chinese-fir and pine forests, the most important and widely distributed plantations over south China. 95 field plots of biomass measurements with different components and stand ages were from our field data in the Huangmian Forestry Center of Guangxi, and from Chinese literature during 1978～-0031The results indicated that stem biomass, aboveground biomass and total biomass in both forest types increased significantly with stand age. Biomass of branches and roots also increased significantly with stand age in the pine forest. However, in Chinese-fir forest, the branch and root biomasses increased in early ages and then gradually tended to reach a steady state. There was no robust relationship between leaf biomass and stand age in both forest types. The root-to-shoot ratio decreased gradually with stand age in Chinese-fir forest, and there was no significant correlation in the pine forest. Because forest inventory data have become accepted as valuable contributions to carbon cycle research, we expected our in-depth analysis to provide insight into the methods for processing inventory data for estimating carbon accumulation, which leads to more accurate estimates of forest carbon stocks and stock changes.

Key words: stand age, carbon storage, biomass, Cunninghamia lanceolata, Pinus massoniana

中图分类号:

S718

张林, 黄永, 罗天祥, 戴强, 邓坤枚. 林分各器官生物量随林龄的变化规律——以杉木、马尾松人工林为例[J]. 中国科学院大学学报, 2005, 22(2): 170-178.

ZHANG Lin, 5 HUANG Yong, LUO Tian-Xiang, DAI Qiang, DENG Kun-Mei . Age Effects on Stand Biomass Allocations to Different Components : a Case Study in Forests of Cunninghamia Lanceolata and Pinus Massoniana[J]. , 2005, 22(2): 170-178.

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