陕西林业科技Issue(6)：1-5,9,6.
黄土高原毛白杨人工老龄林生态系统碳密度研究
Carbon Density in Forest Ecosystem of Old Populus tomentosa Plantation in Loess Plateau
摘要
Abstract
For the purpose of evaluating the carbon storage ability of Populus tomentosa in loess plat- eau, forty-five years old populus tomentosa plantations were taken as the research object and the or ganic carbon density (OCD) of different layer in three plots of plantations and two plots of nearby bar- ren land were determined. The results showed that the value of OCD in the ecosystem of forty-five years old artificial populus tomentosa was 16. 775 kg · m-2, indicating an annual increase of 2.53% and 113.75% increase over the control. Besides, the results indicated that the OCD in the layer of the soil was the highest, followed by the tree layer and the litter layer, shrub layer and herbaceous layer successively. The percentages that OCD of different layers account for total OCD of ecosystem were 70.63% .27.11%.2.07%.0.14% and O. 05% respectively, indicating the soil layer and tree layer are the two main sources of organic carbon storage in forest ecosystem and that there is a remarkable car- bon sink effects in the later period of Populus tomentosa plantations establishment.关键词
黄土高原/毛白杨/老龄林/有机碳密度Key words
Populus tomentosa organic carbon .density/ecosystem loess plateau分类
农业科技引用本文复制引用
许喜明,刘艳,张玲玲,苏印泉..黄土高原毛白杨人工老龄林生态系统碳密度研究[J].陕西林业科技,2012,(6):1-5,9,6.基金项目
日元贷款陕西省植树造林生态环境监测项目（14220302）. （）
