长白山天然林内CO_2环境初探  

CO_2 Environment in Natural Forests of Changbai Mountain——a Preliminary Study.

作　　者：杨思河[1] 林继惠[1] 文诗韵 尹忠馥 

机构地区：[1]中国科学院沈阳应用生态研究所,110015

出　　处：《生态学杂志》1992年第5期56-58,共3页Chinese Journal of Ecology

基　　金：中国科学院长白山森林生态系统定位研究站的开放站经费资助

摘　　要：大气圈和生物圈之间存在着强烈的CO_2交换过程,植被层对CO_2的吸收与释放是引起大气中CO_2浓度不断变化的主要原因。同时,大气CO_2浓度在空间和时间上的变化又是影响绿色植物光合生产力的一个因素。Using infra-red gas analyzer and tube-type air sampling unit, the SO_2 concentrations at different heights are measured in natural and secondary korean pine-broad leaved mixed forests on Changbai Mountain.CO_2 in forest stands changes diurnally:in canopy, it decreases during day time and increases at night. CO_2 in forest stands are supplied both from forest floor and atmosphere above canopy. Higher concentration of CO_2 near ground surface provides better CO_2 environment for regenerated seedlings than in upper layers.

关 键 词：天然林 二氧化碳环境 长白山 

分 类 号：S718.551.1[农业科学—林学]