| 广州市森林生态系统碳储量格局分析 |
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| 引用本文： | 粟娟,周璋,李意德.广州市森林生态系统碳储量格局分析[J].中国城市林业,2016,14(4):15-21. |
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| 作者姓名： | 粟娟 周璋 李意德 |
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| 作者单位： | 1 广州市林业和园林局 广州 510060; |
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| 摘 要： | 相对准确地计量地带性森林碳库大小是估算区域森林碳汇潜力的前提。根据全市不同森林类型设置样地900个,运用样地清查法估算广州市森林生态系统碳储量和碳密度。结果表明:广州市森林生态系统碳储量为52.16 Tg C。其中,植被层和土壤层碳储量分别为21.97 Tg C和27.16 Tg C。碳储量空间分布主要集中在从化区和增城区;总碳储量的组成中,土壤层碳库比例最大(58%),其次为乔木层碳库比例(40%),而灌木层、草本层、凋落物层和细根(≤ 2.0 mm)的生物量比例大多在1%~2%;天然林碳储量与人工林接近,但是碳密度显著大于人工林(p < 0.05);不同林龄从小到大排序为:幼龄林、中龄林、近熟林、过熟林、成熟林;天然林以阔叶混和它软阔的碳储量最高,阔叶混和黎蒴的碳密度最高。人工林不同林型从大到小排序为:南洋楹 > 黎蒴 > 木荷 > 木麻黄 > 它软阔 > 阔叶混 > 湿地松。森林生态系统碳密度为178.03 t C hm-2,其中,植被层和土壤层碳密度分别为79.61 t C hm-2和98.42 t C hm-2。本研究全面计量了广州市森林生态系统碳库现状,这对评估该地区森林固碳潜力和指导碳汇林经营管理具有重要参考价值。
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| 关 键 词： | 广州市森林生态系统碳储量碳密度 |
| 收稿时间： | 2016-08-01 |
Carbon Storage Pattern of Forest Ecosystems in Guangzhou City |
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| Su Juan,Zhou Zhang,Li Yide.Carbon Storage Pattern of Forest Ecosystems in Guangzhou City[J].Journal of Chinese Urban Forestry,2016,14(4):15-21. |
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| Authors: | Su Juan Zhou Zhang Li Yide |
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| Abstract: | The accurate measurement of carbon pools of zonal forests is precondition to estimate the carbon sequestration capacity of forests in one region. Carbon storage and carbon density of forest ecosystem in Guangzhou were evaluated using sample plot inventory method, with the 900 sample plots selected from different forest types. The results indicated that carbon storage of forest ecosystem in Guangzhou was 52. 16 Tg C, while the carbon storage of forest vegetation and of soil were 21. 97 Tg C and 27. 16 Tg C, respectively. Carbon storage of urban forest was distributed mainly in Conghua and Zengcheng. In the total carbon storage, the soil layer gives the largest inputs (58%), followed by the tree layer (40%) and the fractions of biomass for shrub layer, herb layer, aboveground litter and fine roots (≤ 2. 0 mm) were mostly 1%~2%. The carbon storage of natural forest is close to that in the plantation, but the carbon density of natural forest was significantly larger than that in plantation (P < 0. 05). The carbon storage capacity of forest in different times sorted could be descended as the followed order:young forest, middle-age forest, near-mature forest, over-mature forest and mature forest. In nature forest, hardleaved mixed forest and softwood hardleaved forest have the highest carbon storage while hardleaved mixed forest and Castanopsis fissa have the highest carbon density. The plantation were different in terms of carbon for different forest types, which could be ordered as Albizia falcataria > Castanopsis fissa > Schima superba > Casuarina equisetifolia > softwood hardleaved forest > hardleaved mixed forest > Pinus elliottii. The carbon density of forest ecosystem in Guangzhou was 178. 03 t C hm-2, of which vegetation and soil carbon density were 79. 61 t C hm-2 and 98. 42 t C hm-2, respectively. The study comprehensively evaluated the status of forest ecosystem carbon pool in Guangzhou City, which will be of great reference value for evaluating forest carbon sequestration capacity and guiding carbon forest management. |
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| Keywords: | Guangzhouforest ecosystemcarbon storagecarbon density |
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