科尔沁大青沟3种群落乔木层优势树种含碳率分布特征的研究  

Study on the Carbon Content Rate Distribution Characteristics of Dominant Tree Species of Three Communities in Daqinggou of Horqin

作　　者：李凯锋[1] 罗于洋[1] 王树森[1] 李晓宇 刘波[1] 王博[1] 王旭[1] 道如娜[1] 

机构地区：[1]内蒙古农业大学生态环境学院,呼和浩特010019 [2]内蒙古赤峰市林业科学研究院,内蒙古赤峰024000

出　　处：《林业资源管理》2013年第4期47-52,共6页Forest Resources Management

基　　金：国家自然科学基金(30860034)

摘　　要：以科尔沁大青沟水曲柳、蒙古栎及大果榆群落乔木优势树种为研究对象，采用湿烧法实测优势树种各器官含碳率，研究了不同树种及同一树种不同器官含碳率的分布特征。结果表明：1）大果榆不同龄级枝条含碳率的变化幅度与蒙古栎的变化幅度差异最大（2．46％），3种树种各自不同龄级枝条含碳率存在显著差异；2）3种树种不同径级根系含碳率存在差异，其中蒙古栎根系的平均含碳率（50．60％）明显比大果榆（46．42％）、水曲柳（46．25％）的高；3）3种树种器官平均含碳率变化范围分别为48．17％～53．92％，45．58％～51．44％，46．25％～51．68％。由此可知，不同树种因受遗传因素影响，其含碳率存在差异，即使是同一树种含碳率受器官功能不同、主要组成成分及器官生长年限的影响，各器官含碳率也存在差异。Through the measurement of organs carbon content rate, the study was conducted on distribution of carbon content rate under different organs of different species and same tree species in the plant communities of Fraxinus mandschurica Rupr, Quercus mongolica Fisch. ex Turcz, and Ulums macrocarpa Hance in Daqinggou of Horqin. The results were as follows： （ 1 ） The different aged branches of Ulums rnacrocarpa Hance. and Quercus mongolica Fisch. ex Turcz. carbon content rate range difference are maximum（2.46% ）, three tree species carbon content rate of different aged branches present significant differences. （2）Three tree species carbon content rate of different thickness roots are different, in the average the root carbon content rate of Quercus mongolica Fisch. ex Turcz. （ 50. 6% ） higher than in the average the roots carbon content rate of Ulums macrocarpa Hance. （46. 42% ）and Fraxinus mandschurica Rupr. （46. 25 % ）. （ 3 ） Fraxinus mandschurica Rupr. Quercus rnongolica Fisch. ex Turcz. and Ulums macrocarpa Hance. ,three tree species organ carbon content varied between 48. 17% and 53.92% ,45.58% and 51.44% and 46. 25% and 51.68%. Thus,different species carbon content rate due to the impact from genetic factors, even if the different organs of the same species carbon content rate are also different because of the carbon content 、 organ composition and organ growth years.

关 键 词：水曲柳 蒙古栎 大果榆 含碳率 大青沟 

分 类 号：S718.556[农业科学—林学]