北京地区辽东栎呼吸量的测定  

MEASUREMENT OF RE5PIRATION AMOUNT OF TREES IN QUERCUS LIAOTUNGENSIS COMMUNITY

作　　者：方精云[1] 王效科[1] 刘国华[1] 康德梦[1] 

机构地区：[1]中国科学院生态环境研究中心

出　　处：《生态学报》1995年第3期235-244,共10页Acta Ecologica Sinica

基　　金：国家"八五"科技攻关课题

摘　　要：本文报道了北京地区辽东株群落的建群种──辽东烁呼吸量的研究结果。详细论述了用红外ＣＯ＿２分析仪测定林木呼吸速率的方法和技术，给出了辽东栎非同化器官的直径分布函数表达式、呼吸速率与直径的关系以及计算单株林木各器官总时吸量的表达式，建立了由每木调查结果推算群落呼吸量的方法。结果表明：胸径大于４．０ｃｍ的辽东杆每年呼吸释放的ＣＯ＿２为１０．２ｔ／ｈｍ￣２，其中根、茎、叶、枝分别为２．８，１．７，２．６，３．２ｔ／ｈｍ￣２。本文论述的方法和技术不仅对研究森林呼吸量，对测定森林释放其它气体也有参考意义。espiration amount of Quercus liaotutungensis, a dominant species in Q. liaotungensis com-munity located in Beijing,was studied in the present paper. The method and technigue ofmeasuring the respiration rate of organs of trees by using a CO_2 gas analyzer were noted insome details,and two basic formulae for woody organs,diameter frequency distribution func-tion and the relation of the respiration rate to its diameter, were given. Baded on these twoformulae, the authors built an equation for the calculation of total respiration amout of anorgan of tree,and proposed the method for estimating respiration of a community from DBHand height of trees. The result showed that the respiration amount of Q. liaotungensis withDBH>4. 0 was 10.2tCO_2/hm￣2·a,and of the amount,root,stem,branch and leaf 2.8,1.7,2. 6 and 3. 2tCO_2/hm￣2·a, respectively. The method and technique discussed in this paperhave an important significance not only for studying respiration of forest community but alsofor estimating other gases emitted from forests.

关 键 词：栎树 辽东栎 呼吸速率 呼吸量 

分 类 号：S792.189[农业科学—林木遗传育种]