资源与生态学报 ›› 2012, Vol. 3 ›› Issue (3): 193-201.DOI: 10.5814/j.issn.1674-764x.2012.03.001

• 论文 •    下一篇

全球森林固碳潜力巨大

刘迎春1,2, 于贵瑞1, 王秋凤1, 张扬建 1   

  1. 1 中国科学院地理科学与资源研究所生态系统网络观测与模拟重点实验室, 北京 100101;
    2 中国科学院大学, 北京 100049
  • 收稿日期:2012-04-05 修回日期:2012-05-14 出版日期:2012-09-30 发布日期:2012-09-27
  • 通讯作者: YU Guirui

Huge Carbon Sequestration Potential in Global Forests

LIU Yingchun1,2, YU Guirui1, WANG Qiufeng1, ZHANG Yangjian1   

  1. 1 Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2012-04-05 Revised:2012-05-14 Online:2012-09-30 Published:2012-09-27
  • Supported by:

    the National Basic Research Program of China (2010CB833504), the CAS Strategic Priority Research Program(XDA05050600), and the National Natural Science Foundation of China (30590381)

摘要: 森林是重要的陆地生态系统碳汇。1990-2007年间全球森林平均每年从大气中吸收固定2.4±:0.4PgC,但对全球森林未来固碳量的评价多是基于气候因素的过程模型的模拟结果,很少有基于森林调查样地数据评价全球森林固碳潜力的研究。我们收集整理野外调查和已发表的成熟林生物量数据728条,建立全球成熟林生物量数据库。根据成熟林地上生物量碳储量空间插值,得到全球森林地上生物量碳容量,进而评估全球森林地上生物量的固碳潜力。结果显示:(1)全球成熟林地上生物量自赤道向两极整体呈递减趋势,但最大值出现在中纬度区:(2)气温和降水是影响成熟林地上生物量的重要因素:(3)全球森林地上生物量碳容量约为586.2±:49.3PgC,其地上生物量固碳潜力为313.4PgC。因此,充分发挥现有森林的碳吸存能力,减少对现有森林碳库的干扰,是土地利用变化之外减缓温室气体排放的又一可选途径。

关键词: 气候梯度, 全球森林, 成熟林, 地上生物量, 碳容量, 固碳潜力

Abstract: Forests play an important role in mitigating climate change by absorbing carbon from atmosphere.The global forests sequestrated 2.4±0.4 PgCy-1 from 1990 to 2007, while the quantitative assessment on the carbon sequestration potential (CSP) of global forests has much uncertainty.We collected and compiled a database of site above-ground biomass (AGB) of global mature forests, and obtained AGB carbon carrying capacity (CCC) of global forests by interpolating global mature forest site data.The results show that:(i) at a global scale, the AGB of mature forests decline mainly from tropical forests to boreal forests, and the maximum AGB occurs in middle latitude regions; (ii) temperature and precipitation are main factors influencing the AGB of mature forests; and (iii) the above-ground biomass CCC of global forests is about 586.2±49.3 Pg C, and with CSP of 313.4 Pg C.Therefore, achieving CCC of the existing forests by reducing human disturbance is an option for mitigating greenhouse gas emission.

Key words: climatic gradient, global forests, mature forest, above-ground biomass (AGB), carbon carrying, capacity (CCC), carbon sequestration potential (CSP)