青海省湟源县胡丹流域林地碳储量及碳增汇潜力估测

The Estimation of Carbon pools and Carbon Sequestration Potentials of Hudan Cathments in Huangyuan county,Qinghai Province

利用文献调研和实验观测的方法对青海省东部农业区湟源县胡丹流域林业生态工程项目实施后林地的碳增汇潜力进行了初步估测。结果表明:胡丹流域植被-土壤碳库总储量约为1.42×105t C。其中植被、土壤碳库储量分别为0.14×105t C和1.28×105t C。林业生态工程项目的实施明显地增加了林地的碳吸收潜力。退耕地人工造林、天然灌木林实施封育10年左右,植物通过光合作用吸收和固定的大气CO2约5275.34 t,CO2年吸收固定率为527.53 t CO2/a。

Literature research method and filed experiments were employed in this study to estimate the carbon pool sizes and carbon sequestration potentials of Hudan cathments in Huangyuan county, Qinghai province. The results indicated that the total carbon pool size was 1.42× 10^5 t C in Hudan catchment, with the vegetation and soil carbon pools were 0.14 × 10^5 and 1.28 × 10^5 t C, respectively. By comparing the baseline and with forestry program scenarios, it was primarily concluded that about 5275.34 t of atmospheric CO2 were absorbed in Hudan catchment since the implementation of forestry programs ten years ago, with an annual abosorbing rate of 527. 53 t CO2/a, respectively.