广东省德庆林场乔木林碳储量与碳密度研究

Study on Carbon Storage and Carbon Density of Arbor Forests in Guangdong Deqing Forest Farm

以广东省德庆林场二类调查数据为基础,结合生物量扩展因子方程,对广东省德庆林场乔木林的碳储量和碳密度进行估算。结果表明:广东省德庆林场乔木林的总碳储量为23.68万t,平均碳密度为(38.83±0.83)t/hm^(2);就不同树种而言,碳储量大小顺序为桉树>马尾松>杉木>其它>阔叶混交林,而碳密度大小顺序为其它>杉木>桉树>马尾松>阔叶混交林;就不同林龄而言,碳储量主要集中在林龄≤10 a和>10~20 a,以及林龄在>20~30 a的林分,而碳密度则是随着林龄的增加,呈现先迅速增加后逐渐减小的趋势,在林龄>10~20 a时达到最大。

According to the data of forest management inventory in Guangdong Deqing Forest Farm and combining biomass expansion factor equation,the carbon storage and carbon density of arbor forests in this forest farm had been estimated.The results showed that the total carbon storage of arbor forests amounted to 236.8×10^(3) t and the average carbon density was(38.83±0.83)t/hm^(2) in Guangdong Deqing Forest Farm;as for different tree species,the order of size for carbon storage was Eucalyptus robusta>Pinus massoniana>Cunninghamia lanceolata>others>broad-leaved mixed forest while the order of size for carbon density was others>Cunninghamia lanceolata>Eucalyptus robusta>Pinus massoniana>broad-leaved mixed forest;as for different forest ages,the carbon storage mainly concentrated in the stands of≤10 years old,>10~20 years old and>20~30 years old while the carbon density showed the trends of increasing rapidly at first time and then decreasing gradually with the increase of forest ages,and there was the highest carbon density in>10~20 years old stand.