农田防护林树种中林46杨不同器官碳含量的研究  

Carbon Concentration Storage and Partition of Populus×euramericana "Zhonglin-46" in Shelterbelts

作　　者：耿相国[1] 吴斌[1] 张宇清[1] 李春平[1] 李志沛[1] 郑慧 

机构地区：[1]北京林业大学水土保持学院,水土保持与荒漠化教育部重点实验室,北京100083 [2]中国水土保持学会,北京100083

出　　处：《林业科学研究》2011年第2期267-271,共5页Forest Research

基　　金：林业公益性行业科研专项项目“典型平原区生态安全林业保障体系构建机理及功效评价研究”(200804008)

摘　　要：自20世纪以来,伴随着现代工业的兴起和发展,土地退化、温室效应、森林锐减、环境污染等问题,已经严重威胁到全球生态环境和人类社会自身的生存与发展,引起了国际社会的普遍关注。尤其是由于人类活动所导致的空气CO2浓度上升。Carbon partition in plants is one of the key points for carbon cycle research.In order to estimate the carbon storage of shelterbelts in plain areas of China accurately,the method of biomass inventory was used to study the individual biomass,organ carbon storage and partition in different organs of 8,10,13 and 16 year-old poplar shelterbelts in Yuncheng,Shandong Province.The results indicated that the biomass of different poplar organs followed the pattern of trunk〉branch〉root〉leaf,and the biomass of trunk and branch accounted for about 80% of the total.The carbon concentration of the different organs followed leafbranch trunk root.The carbon concentration of different organs ranged between 43.51% and 70.49%.The carbon concentration of the four age groups＇ shelterbelts were higher than 50%,which was slightly higher than the average carbon concentration of poplar in Northern China（48.80%）.The variation coefficient of carbon concentration was the smallest for leaf,and the largest for root.As for the difference of carbon concentration,it was significant among different organs for all the four age groups,and not significant among the whole trees for the four age groups.The carbon storage was closely related to its biomass for all tree organs,and its sequence was trunk〉branch〉root〉leaf.The proportion of trunk carbon storage obviously increased with tree age.

关 键 词：碳含量 碳贮量 黑杨派 农田防护林 

分 类 号：S727.2[农业科学—林木遗传育种]