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以云贵鄂渝水土保持世行贷款/欧盟赠款项目实施过程中不同水土保持林、封山育林、经济林及梯田土壤碳储量、地上生物量、地下生物量为研究对象,建立了333个样地并进行了实地调查,根据调查数据,建立了地上部分生物量与地下生物量回归方程,在此基础上,计算出林地碳储量与大气CO2削减量。结果表明,各类植被土壤中碳储量均较低。随着树木年龄的增长,林分同化能力的增强,大气CO2的削减量也会随之增大;项目实施后生态效益明显。
A total of 333 plots were set up for the study on soil carbon storage, aboveground biomass and underground biomass of different types of soil and water conservation forests, hillsides for afforestation, economic forest and terraced fields in the implementation of the project of World Bank Loan of Irrigation and Drainage Rehabilitation Project of Yusui Basin, Based on the survey data, the regression equation of aboveground biomass and underground biomass was established. Based on this, the carbon storage of forest land and the reduction of atmospheric CO2 were calculated. The results show that all types of vegetation soil carbon stocks are low. With the increase of tree age and the enhancement of assimilation ability of forests, the reduction of atmospheric CO2 will also increase. After the project is implemented, the ecological benefits are obvious.