兴安落叶松林碳平衡和全球变化影响研究

应用生态学报 ›› 2001, Vol. ›› Issue (4): 481-484.

• 研究论文 • 下一篇

兴安落叶松林碳平衡和全球变化影响研究

蒋延玲, 周广胜

中国科学院植物研究所植被数量生态学开放研究实验室, 北京 100093

收稿日期:2000-12-01 修回日期:2001-02-13 出版日期:2001-07-25
通讯作者: 蒋延玲,女,1973年生,博士研究生,主要从事森林生产力生理生态学模型研究,发表文章11篇.
基金资助:
国家重点基础研究发展规划项目(G1999043407);中国科学院知识创新工程项目(KSCX2107);国家自然科学基金重点项目(39370110和49835001);国家自然科学基金资助项目(49905005;30070642)

Carbon equilibrium in Larix gmelinii forest and impact of global change on it

JIANG Yanling, ZHOU Guangsheng

Laboratory of Quantitative Vegetation Ecology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093

Received:2000-12-01 Revised:2001-02-13 Online:2001-07-25

摘要/Abstract

摘要： 利用CENTURY模型模拟兴安落叶松林的C循环并探讨全球变化对其C循环的影响.结果表明,兴安落叶松林是一个C汇,年净吸收C 2.65t·hm^-2.气候变化和大气CO₂浓度增加将对北方森林的生长有利,使其净吸收C的能力增强.温度上升2℃时,兴安落叶松林的植物总生物量和生产力均增加,而土壤C含量降低.降水减少20%比降水增加20%时其植物总生物量、生产力和土壤C含量变化的幅度大,说明温度是大兴安岭地区森林生长的主要限制因子.

Abstract: In order to provide a methodological demonstration for the study of C cycle in forest,the CENTURY model was applied to simulate the C cycle in Larix gmelinii forest and to approach the impact of global change on it.The results showed that the Larix gmelinii forest served as a C sink, with an annual net absorption of 2.65t·hm^-2.Cimate change and increased atmospheric CO₂ concentration benefited for the net primary production(CNPP)and net C absorption capacity of forests in North China. When the atmospheric temperature was increased by 2℃,the gross biomass and NPP of Larix gmelinii forest increased, while soil C content decreased, and the variation of these three indices was bigger when the precipitation was decreased by 20% than increased by 20%, indicating that the limiting factor for the forest growth in this area is atmospheric temperature, while precipitation is abundant or even too much.

中图分类号:

P595
S718.5

蒋延玲, 周广胜. 兴安落叶松林碳平衡和全球变化影响研究[J]. 应用生态学报, 2001, (4): 481-484.

JIANG Yanling, ZHOU Guangsheng . Carbon equilibrium in Larix gmelinii forest and impact of global change on it[J]. Chinese Journal of Applied Ecology, 2001, (4): 481-484.

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兴安落叶松林碳平衡和全球变化影响研究

Carbon equilibrium in Larix gmelinii forest and impact of global change on it

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