欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志 ›› 2010, Vol. 29 ›› Issue (03): 439-447.

• 研究报告 • 上一篇    下一篇

上海城市森林群落结构对固碳能力的影响

徐 飞1;刘为华2;任文玲1;仲启铖1;张桂莲3;王开运1**   

  1. 1华东师范大学资源与环境科学学院上海市城市化生态过程与生态恢复重点实验室,上海 200062; 2深圳市滨河中学,广东深圳 518010;3中国科学院上海生命科学研究院计算生物学研究所,上海 200031
  • 出版日期:2010-03-10 发布日期:2010-03-10

Effects of community structure on carbon fixation of urban forests in Shanghai, China.

XU Fei1;LIU Wei-hua2;REN Wen-ling1;ZHONG Qi-cheng1|ZHANG Gui-lian3;WANG Kai-yun1
  

  1. 1Shanghai Key Laboratory of Urbanization and Ecological Restoration, School of Resource and Environment |Science, East China Normal University, Shanghai 200062, China|2Shenzhen Binhe Middle School, Shenzhen 518010, Gungdong, China|3CASMPG Partner Institute for Computational Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
  • Online:2010-03-10 Published:2010-03-10

摘要: 基于上海市区航片数字化、代表性样地群落调查、优势树种生理参数测定和CITYgreen模型软件,对上海城市森林固碳能力进行评估,并探讨群落结构对固碳能力的影响。结果表明:上海城市森林总碳贮量为478472 t,年碳固定量为6256 t·a-1,平均碳密度为47.80 t·hm-2,平均固碳率为0.625 t·hm-2·a-1;城市森林的固碳率与郁闭度及群落密度均呈极显著正相关,而与平均胸径负相关;碳密度与郁闭度及平均胸径均呈极显著正相关,而与群落密度无显著相关;低密度高胸径群落比中、高密度群落具有更高的碳密度;混交林碳密度高于纯林,复层林碳密度和固碳率都高于单层林,且固碳能力的差异在一定程度上受平均胸径、群落密度等因子影响。

关键词: 土壤, 微生物多样性, Biolog, 磷脂脂肪酸, 核酸分析

Abstract: Based on the RS image digitization, investigations on representative communities, measurement of dominant species physiological variables, and CITYgreen model, this paper evaluated the carbon fixation of urban forests in Shanghai, and studied the effects of community structure on the carbon fixation of the forests. The total carbon storage and the annual carbon sequestration of urban forests in Shanghai were 478472 t and 6256 t, and the average carbon density and av
erage carbon sequestration rate were 47.80 t·hm-2 and 0.625 t·hm-2·a-1, respectively. The carbon sequestration rate was significantly positively correlated with canopy closure and community density but negatively correlated with average DBH, and the carbon density was significantly positively correlated with canopy closure and average DBH but had no significant correlation with community density. The forests with low density and high DBH had higher carbon density than those with medium or high density. Mixed forests had higher carbon density than pure forests, multilayer forests had higher carbon density and c
arbon sequestration rate than monolayer forest, and the differences were to some extent affected by average DBH and community density.

Key words: Soil, Microbial diversity, Biolog, FLFA, Nucleic acid-based analysis