Liu Shu Qin, Xia Chao Zong, Feng Wei, Zhang Ke Bin, Ma Li, Liu Jian Kang
College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China.
Academy of Fo restry Investigation and Plaming, Beijing 100013, China.
Ying Yong Sheng Tai Xue Bao. 2017 Oct;28(10):3127-3134. doi: 10.13287/j.1001-9332.201710.023.
The estimation of vegetation carbon storage and density of forests at tree layer in Tibet Autonomous Region was calculated based on the eighth forest inventory data using the biomass inventory method, as well as other attributes like tree trunk density and carbon content of different species. The results showed that the total carbon storage at tree layer in Tibet forest ecosystem was 1.067×10 t and the average carbon density was 72.49 t·hm. The carbon storage at tree layer of different stands was in the order of arbor forest > scattered wood > sparse forest > alluvial tree. The carbon storage of different forest types at tree layer were in the order of shelterbelt > special purpose forest > timber forest > firewood forest. The proportion of the first mentioned two was 88.5%, and the average carbon density of different forest types at tree layer was 88.09 t·hm. The carbon sto-rage and its distribution area at tree layer in different forest groups were in the same order, followed by mature forest > over mature forest > near mature forest > middle aged forest > young forest. The carbon storage in mature forests accounted for 50% of the total carbon storage at tree layer in diffe-rent forest groups. The carbon storage at tree layer in different forest groups increased first and then decreased with the increase of stand ages.
基于第八次森林资源清查数据，采用生物量清查法，结合树干密度、不同树种碳含量等其他属性，对西藏自治区森林乔木层植被碳储量及碳密度进行了估算。结果表明，西藏森林生态系统乔木层总碳储量为1.067×10吨，平均碳密度为72.49吨·公顷。不同林分乔木层碳储量大小顺序为乔木林＞散生木＞疏林＞河岸林。不同森林类型乔木层碳储量大小顺序为防护林＞特种用途林＞用材林＞薪炭林。前两者占比88.5%，不同森林类型乔木层平均碳密度为88.09吨·公顷。不同森林组乔木层碳储量及其分布面积排序相同，依次为成熟林＞过熟林＞近熟林＞中龄林＞幼龄林。成熟林碳储量占不同森林组乔木层总碳储量的50%。不同森林组乔木层碳储量随林分年龄增加先增加后减少。
