城市绿地碳汇能力研究

摘要

With the developed of industry and traffic and population intensive in city,greenhouse effect more and more prominent,the urban green lands as the important part in city has importance of effect in function of carbon sink.This paper study on the unit leaf area of function of carbon sink for several common greening trees in Tianjin,found that there are certain differences for carbon sink of greening trees in city.The results showed that the function of carbon sink highest is pomegranate,1.380×10-6/cm2/s,then the middle is jujube tree;the worst,Sophora japonica and pewter,respectively is 0.080×10-6/cm2/s and 0.126×10-6/cm2/s.So So the choice of urban green lands species and the structure of urban green space to the carbon absorbing ability has the very vital significance.%城市工业、交通发达,人口密集,温室效应越来越突出,城市绿地作为城市的重要组成部分,在碳汇功能中应该发挥重要的作用。作者通过对天津市几种常见绿化树种单位叶面积碳汇能力的研究发现：城市绿化树种的碳汇能力具有一定的差异性,石榴最高为1.380×10-6/cm2/s,枣树次之,国槐和白蜡最小,分别为0.080×10-6/cm2/s和0.126×10-6/cm2/s。因此城市绿地植物种类的选择和构成对城市绿地的碳汇能力具有十分重要的意义。