山西省森林资源碳储量与碳汇动态变化

The Dynamic Changes of Carbon Storage and Carbon Sink of Forest Resources in Shanxi Province

以1984年至2015年7次森林资源清查数据为对象,采用模型法研究山西省森林资源碳储量及碳汇量变化情况。结果表明,从1984年至2015年,山西省森林覆盖率净增长14.20%,森林蓄积量净增长9 172.88×10^(4) m^(3)。森林覆盖率拟合曲线呈线性,拟合方程为y=0.453 x-892.820;森林蓄积量拟合曲线呈二项式分布,拟合方程为y=0.000 9x^(2)-3.487 5x+3 459.600 0。山西省森林资源单位面积蓄积量为30.05 m^(3)/hm^(2)~40.25 m^(3)/hm^(2),远低于全国平均水平,有较大增长空间;森林资源碳储量为4 343.79×10^(4) t~14 970.80×10^(4) t,碳密度为14.28 t/hm^(2)~19.12 t/hm^(2),碳汇量为128.82×10^(4) t/a~737.56×10^(4) t/a。森林资源碳储量拟合曲线呈二项式分布,拟合方程为y=0.001x^(2)-4.040x+4 008.000。

The model method was used to study the carbon storage and carbon sink changes of forest resources in Shanxi Province with 7 forest resource inventory data from 1984 to 2015 as the object.The results showed that from 1984 to 2015,the forest coverage rate in Shanxi Province increased by 14.20% and the forest volume increased by 9 172.88×10^(4) m^(3).The fitting curve of forest coverage was linear,and the fitting equation was y=0.453 x-892.820.The fitting curve of forest volume was a binomial distribution,and the fitting equation was y=0.000 9x^(2)-3.487 5x+3 459.600 0.The unit area storage volume of forest resources in Shanxi Province was 30.05 m^(3)/hm^(2)~40.25 m^(3)/hm^(2),which was much lower than the national average level and had significant growth potential.The carbon storage of forest resources was 4 343.79×10^(4) t~14 970.80×10^(4) t.The carbon density was 14.28 t/hm^(2)~19.12 t/hm^(2),and the carbon sink was 128.82×10^(4) t/a~737.56×10^(4) t/a.The fitting curve of forest resource carbon storage was a binomial distribution,and the fitting equation was y=0.001x^(2)-4.040x+4 008.000.