杭州市不同土地利用类型的树木生长和碳固存

被引:6
作者
嵇浩翔 [1 ]
史琰 [1 ]
朱轶梅 [1 ]
温家石 [1 ]
唐宇力 [2 ]
葛滢 [1 ]
常杰 [1 ]
机构
[1] 浙江大学生命科学学院
[2] 杭州市园林文物局钱江管理处
关键词
碳固存; 树芯增量分析; 行道树; 年轮;
D O I
10.13292/j.1000-4890.2011.0362
中图分类号
S718.4 [树木学];
学科分类号
071012 ; 0713 ;
摘要
随着全球城市化的加剧,城市作为一个受强人类活动支配的生态系统,在显著改变土地利用的同时,也改变了城市内植被的碳吸收和碳储存能力。本文选取杭州具有代表性的2个树种香樟(Cinnamomum camphora)和悬铃木(Platanus acerifolia)为研究对象,调查并测量了720株树木的胸径、株高、株距和冠幅,测量了230株样木近10年的平均轮面积增量,对城市不同土地利用类型上不同树种的碳储存和碳吸收速率进行了估算和比较。结果表明,香樟碳储存为45kg C·m-2,悬铃木104kg C·m-2。香樟碳吸收速率在政府机关用地上最大,住宅区最小;而悬铃木在住宅区碳吸收速率远远大于商业区和政府机构用地。冠幅是影响香樟碳吸收速率的主要影响因子,而悬铃木的碳吸收速率与冠幅相关外还受到年龄的影响。在城市土地利用类型中乔木碳吸收是野外相同年龄乔木的5倍甚至更多。
引用
收藏
页码:2405 / 2412
页数:8
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