广州市城市森林生态系统碳汇功能研究  

Function of Carbon Sink of Forest Ecosystem in Guangzhou

作　　者：李晓曼[1] 康文星[1] 

机构地区：[1]中南林业科技大学生态教研室,湖南长沙410004

出　　处：《中南林业科技大学学报》2008年第1期8-13,共6页Journal of Central South University of Forestry & Technology

基　　金：广州市林业局科技攻关项目"城市森林在广州市生态安全中的作用"

摘　　要：基于广州市2006年森林资源清查资料,结合实地测定数据,分析了广州市城市森林生态系统碳固定的生态功能.结果表明：广州市各森林类型间CO2固定能力差异很大,变化范围为6.444 7～32.618 9 t·hm^-2a^-1;2005年广州市城市森林生态系统净固定CO2量为7 493 811 t,其中地上部分固定CO2量为6 391 232 t,土壤固定CO2量为1 102 579 t;在不同森林类型中,阔叶树固定CO2量最大,为4 216 106 t,占总净固定CO2量的56.30%,城区园林固定CO2量为974 010 t,占13%,针阔混交林固定CO2量为716 756 t,占9.6%,马尾松林固定CO2量为662 336 t,占8.8%,竹林固定CO2量为209 250 t,占2.8%,经济林固定CO2量为206 412 t,占2.7%,湿地松固定CO2量为170 973 t,占2.3%,针叶混交林固定CO2量为135 769 t,占1.8%,杉木林固定CO2量为115 368 t,占1.5%,灌丛疏林固定CO2量为86 831 t,占1.2%.The ecological function of forest carbon fixation in Guangzhou was estimated based on the data from the forest resource inventory of Guangzhou in 2006 and the measured data of different forest categories. The results show that the function of carbon fixation of different forest types changes differently, ranging from 6. 444 7 to 32. 618 9 t · hm^-2; that the net carbon fixation in 2005 accounts for 7 492 598 t, of which the aerial part＇s is 6 391 232 t and the soil part＇s 1 101 366 t; and that as for different forest categories, the broad-leaved has the largest carbon fixation, being 4 216 106 t, occupying 56, 30% of the net carbon fixation; land gardens＇ carbon fixation accounts for 974 010 t, occupying 13%; coniferous and broad-leaved mixed forest＇s accounts for 716 756 t, occupying 9.6% ; masson pine＇s accounts for 662 336 t, occupying 8.8% ; bamboo forest＇s accounts for 209 250 t, occupying 2.8% ; non-wood forest＇s accounts for 206 412 t, occupying 2.7% everglade pine＇s accounts for 170 973 t, occupying 2.3%; coniferous mixed forest＇s accounts for 135 769 t, occupying 1.8% ; Chinese fir＇s accounts for 115 368 t, occupying 1.5%; and brush and broadleaved forest＇s accounts for 86 831 t, occupying 1.2%,

关 键 词：生态学 碳汇 城市森林生态系统 广州市 

分 类 号：S718.55[农业科学—林学] S718.56