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利用“十五”期间(2001—2005年)江西省森林资源二类清查资料,根据优势树种生物量扩展方程,估算江西省森林植被的碳储量和碳密度,并分析其地理分布特征。江西省森林植被的总碳储量为263.87 Tg C(1 Tg C=106t),其中林分碳储量为214.70 Tg C。在11个地市中,赣州市的森林植被碳储量最大,为70.11 Tg C,其次是吉安市、上饶市和宜春市。江西省森林植被的平均碳密度为26.27 t/hm2,林分平均碳密度为27.20 t/hm2,各地市森林植被的平均碳密度景德镇市最大,为31.65 t/hm2,其次为宜春市、吉安市和鹰潭市。各森林类型中,杉木(Cunninghamia lanceolata)林的碳储量最大,为73.77 Tg C,占江西省林分碳储量的34.36%;硬阔林的碳密度大于其他类型森林,为42.64 t/hm2,是江西省森林植被平均碳密度的1.5倍多。幼、中龄林的碳储量占全省林分碳储量的81.95%,碳密度随着龄级的增长而增加。
Based on the second inventory data of forest resources in Jiangxi Province during the “Tenth Five-Year Plan” period (2001-2005), the carbon stocks and carbon densities of forest vegetation in Jiangxi Province were estimated based on the biomass expansion equation of dominant tree species and their geographical distribution characteristics were analyzed. The total carbon storage of forest vegetation in Jiangxi Province is 263.87 Tg C (1 Tg C = 106 t), of which the stand carbon storage is 214.70 Tg C. Among 11 cities, Ganzhou City has the largest forest carbon storage of 70.11 Tg C, followed by Ji’an, Shangrao and Yichun. The average carbon density of forest in Jiangxi Province is 26.27 t / hm2, and the average carbon density of forest stands is 27.20 t / hm2. The average carbon density of forest in each city is 31.65 t / hm2 in Jingdezhen City, followed by Yichun City and Ji’an City And Yingtan City. Among the forest types, Cunninghamia lanceolata forest has the largest carbon storage of 73.77 Tg C, accounting for 34.36% of the total carbon storage in Jiangxi. The carbon density of hardwood forest is 42.64 t / hm2, which is higher than other types of forests The average carbon density of forest vegetation in Jiangxi Province is more than 1.5 times. The carbon storage of young and middle-aged forests accounted for 81.95% of the total carbon storage in the whole province, and the carbon density increased with the increase of age classes.