生态环境学报Issue(2)：211-216,6.DOI:10.16258/j.cnki.1674-5906.2015.02.005
辽宁省森林植被碳储量及其动态变化
Carbon Storage and Its Dynamics of Forest Vegetations in Liaoning Province
摘要
Abstract
Forest is the first major form of terrestrial ecosystem and plays an important role in global carbon cycle. Based on the national forest inventory data from 1990 to 2010, the carbon storage and density of forest vegetation were estimated and their dynamic changes during this period were analyzed in Liaoning province using the variable biomass expansion factor (BEF) method. The results showed that the forest area of Liaoning province increased 17.05×105 hm2 and an average annual growth rate was 1.70%from 1990 to 2010. The total carbon storage of forest vegetation on Liaoning province in the five periods (1989─1993, 1994─1998, 1999─2003, 2004─2008 and 2009─2013) was 87.10, 100.78, 108.04, 122.06 and 141.80 Tg, respectively, and the average annual growth rate was 2.47%. This indicated that forest ecosystem in Liaoning province played a carbon sink role in that period. During the study period, trees, open forest and shrubwood, and economic forests carbon storage increased 50.90、2.97 and 0.83 Tg, respectively, and their average annual increases of carbon storage were 2.55、0.15 and 0.04 Tg·a-1, respectively. The carbon storage and density of broad-leaved forests were higher than those of conifer forests. The dominant species such as Quercus, Populus spp and mixed broad-leaf forest are the main contributors to carbon storage in broad-leaved forests;Larix and Pinu stabulaeformis have played a dominant role in conifer forests. The young-and middle-aged forests accounted for a large proportion of total carbon in Liaoning province. In 2010, the carbon storage and density of trees were 121.49 Tg and 31.12 Mg·hm-2, respectively. The young- and middle-aged forests accounts of 73.38%of the total trees area, and 60.12%of the total carbon storage. The average carbon density of young-and middle-aged forests were 19.52 and 36.18 Mg·hm-2, respectively, and were smaller than mature forests (54.32 Mg·hm-2). Since the young-and middle-aged forests area is large and their carbon density is low, the carbon storage and carbon density would increase in the future. Therefore, Liaoning province forests would have a huge potential for carbon sink.关键词
碳储量/森林植被/碳分配/碳密度/辽宁省Key words
carbon storage/forest vegetation/carbon allocation/carbon density分类
农业科技引用本文复制引用
刘艳,孙向阳,范俊岗,张骏达..辽宁省森林植被碳储量及其动态变化[J].生态环境学报,2015,(2):211-216,6.基金项目
科技基础性工作专项（2014FY120700）；辽宁省林业科学研究院科技合作项目 （）
