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作 者:郑帷婕[1] 包维楷[2] 辜彬[1] 何晓[1] 冷俐[2]
机构地区:[1]四川大学生命科学学院,成都610064 [2]中国科学院成都生物研究所,成都610041
出 处:《生态学杂志》2007年第3期307-313,共7页Chinese Journal of Ecology
基 金:国家重点基础研究发展规划项目(2005CB422006);中国科学院知识创新工程项目(KZCX3-SW-339);中国科学院野外台站资助项目
摘 要:精确评估植被碳贮量是阐明植被恢复对全球陆地生态系统碳平衡影响的核心。碳贮量一般根据碳含量系数与生物量来估计。本文收集了植物碳含量实测数据,分析了不同生长型植物、植物构件和不同区域植物的碳含量状况及其特点,结果表明:植物碳含量在24.95%~55.44%,平均为(43.63±0.14)%;不同生长类型植物平均碳含量是乔木(46.22%)〉灌木(45.93%)〉苔藓(41.64%)〉草本(37.13%);不同的构件的碳含量是花(48.52%)〉果(47.19%)〉枝(45.42%)〉干(44.48%)〉叶(43.36%)〉根(42.88%);不同地带的碳含量是高纬度地区(50.30%)〉低纬度地区(45.30%)〉中纬度地区(39.68%),且不同气候型之间均有显著差异。因此,用固定的碳含量系数来估计碳贮量存在较大误差。A precise estimation of vegetation carbon storage is the key of illustrating the effects of vegetative restoration on the carbon balance in terrestrial ecosystem. In common, this carbon storage is estimated by carbon concentration coefficient and biomass. This paper collected the actual data of various plants carbon concentration, and analyzed the characteristics of the carbon concentration in different plant life types, plant tissues, and different areas. The results showed that plant carbon concentration was in the range of 24. 95% - 55.44%, with an average of (43.63 ± 0. 14 ) %. The average carbon concentration of different life types was arbor (46.22%) 〉shrub (45.93%) 〉 bryophyte (41.64%) 〉herbage (37.13%), and that of different tissues was flower (48.52%) 〉 fruit (47. 19% ) 〉 branch (45.42%) 〉 stem (44. 48% ) 〉leaf (43.36%) 〉 root (42.88%). As for different geographical areas, the average carbon concentration was high latitude area (50.30%) 〉 low latitude area (45.30%) 〉 middle latitude area (39. 68% ), and there were significant differences among different climatic types. As a result, error always existed when fixed coefficients were used to estimate the carbon storage.
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