摘要
为定量评价黄土高原人工林的固碳能力,采用固定样地方法以油松人工林幼林（6 a）和对照荒地为研究对象,比较两种地类生态系统中土壤、植物各部分和凋落物层的有机碳密度和碳储量变化。结果表明：荒地在0-80 cm土层土壤有机碳密度为5.086 kg·m^-2,油松林为5.840 kg·m^-2,与荒地相比增加了14.83%;油松人工林地植物地上部分、根系有机碳密度与荒地相比分别增加了123.31%、4.93%;凋落物有机碳密度无明显变化;油松人工林生态系统有机碳密度平均每年增加22.94%,说明黄土高原营造油松人工林具有明显的碳增汇效应。
To quantitatively evaluate the carbon sequestration of artificial forest in the Loess Plateau,a comparative study was conducted on the organic carbon density of soil,litter and plant organs in an 6-year-old Pinus tabulaeformis plantation and nearby barren land using fixed plot method for sampling.The results indicated that the value of soil organic carbon density was 5.086 kg·m^-2 in the depth of 0-80 cm in wasteland,whereas that of 6-year-old P.tabulaeformis was 5.840 kg·m^-2,which increased by 14.83 % compared to the wasteland.Comparing with the barren land,the organic carbon density in its aboveground organs,root system increased by 123.31% and 4.93%,respectively.Litter layers of the young P.tabulaeformis had no significant change.A total organic carbon density increased by 22.94% annually.All these results demonstrated that remarkable carbon sink effects had performed in artificial forest of P.tabulaeformis in the Loess Plateau.
出处
《西北林学院学报》
CSCD
北大核心
2010年第5期29-32,48,共5页
Journal of Northwest Forestry University
基金
中日合作陕西省日元贷款造林项目"生态环境监测研究资助"(14220302)
关键词
碳汇
生态系统
油松人工林
黄土高原
carbon sink
ecosystem
Pinus tabulaeformis plantation
Loess Plateau
