新疆喀纳斯自然保护区森林碳储量及碳密度变化  

Changes of Carbon Storage and Carbon Density of Forests in the Kanas National Nature Reserve,Xinjiang

作　　者：李园园 王蕾[3] 刘琪璟 周华[4] LI Yuan-yuan;WANG Lei;LIU Qi-jing;ZHOU Hua(College of Forestry,Beijing Forestry University,Beijing 100083,China;Department of Forestry,College of Agriculture,Shihezi University,Shihezi 832000,Xinjiang,China;Institute of Modern Forestry,Xinjiang Academy of Forestry,Urumqi 830063,Xinjiang,China;Guizhou Academy of Forestry,Guiyang 550000,Guizhou,China)

机构地区：[1]北京林业大学林学院,北京100083 [2]石河子大学农学院林学系,新疆石河子832000 [3]新疆林业科学院现代林业研究所,新疆乌鲁木齐830063 [4]贵州省林业科学研究院,贵州贵阳550000

出　　处：《干旱区研究》2019年第5期1136-1145,共10页Arid Zone Research

基　　金：国家高新技术发展计划(2013AA122003);中国科学院战略性先导科技专项(XDA05050202)资助

摘　　要：利用2009和2014年2期森林资源小班数据,结合地面样地调查,建立主要森林类型生物量-蓄积量转换方程,以此分析喀纳斯保护区森林乔木层地上碳储量及碳密度变化。结果表明:喀纳斯保护区5 a间森林面积增加了496.77 hm^2,碳储量约为2.14×10^6Mg,平均碳密度由55.34 Mg·hm^-2减小至54.61 Mg·hm^-2,而不同森林类型的碳密度变化中,西伯利亚落叶松、西伯利亚红松和欧洲山杨碳密度减小,其余森林类型碳密度增大;保护区内成熟林碳储量最大,占乔木层地上总碳储量的63%以上,其余依次为过熟林、近熟林、中龄林和幼龄林,而碳密度最大的是中龄林(66.69~68.68 Mg·hm^-2),较小的是幼龄林(40.99~44.55 Mg·hm^-2),其余龄组碳密度为成、过熟林>近熟林。其中,西伯利亚落叶松、西伯利亚冷杉、西伯利亚云杉和疣枝桦中龄林和近熟林碳密度增大,除西伯利亚红松和西伯利亚冷杉外,其余森林类型过熟林碳密度减小。经对比,该区森林乔木层碳密度高于全国平均水平,在我国干旱半干旱区是具有较强固碳潜力的区域。In this paper,the equations were established for calculating the conversion between aboveground biomass and stem volume of main forest types by using the forest resources inventory data in 2009 and 2014 and the surveyed data of sample plots.On which the aboveground carbon storage and carbon density of the forests in the Kanas Nature Reserve were analyzed.The results showed that,in the 5 years from 2009 to 2014,the aboveground carbon storage in the Kanas Nature Reserve was about 2.14×10^6 Mg,and the average carbon density was decreased from 55.34 Mg·hm^-2 to 54.61 Mg·hm^-2,while the forest area was enlarged by 496.77 hm^2.Among the carbon density changes of different forest types,the carbon densities of Larix sibirica,Pinus sibirica and Populus tremula forests were decreased,while those of Picea oborata,Abies sibirica and Betula pendula forests were increased.From2009 to 2014,the carbon stocks of the mature forests was the highest and accounted for 63%of the total carbon storage in the arborous layer,and then that of post-mature,premature,middle-aged and young forests.The carbon density of the middle-aged forests was the highest(66.69-68.68 Mg·hm^-2),that of the young forests was low(40.99-44.55 Mg·hm^-2),and that of other tree-aged groups ranked as mature and post-mature forests>premature forest.In which the carbon density of middle-aged and premature forests of L.sibirica,A.sibirica,P.oborata and B.pendula was increased,but that of all other post-mature forests was decreased except for P.sibirica and A.sibirica.The compared results revealed that the carbon density of the arborous layer in the study area was higher than the national average level,and the carbon sequestration potential of the arid and semiarid areas in China is high.

关 键 词：森林 碳储量 碳密度 固碳潜力 喀纳斯自然保护区 新疆 

分 类 号：S71[农业科学—林学]