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当前位置: 首页 > 文章 > 桂西南连续年龄序列尾巨桉人工林碳储量及其分布特征 农业研究与应用 2017 (3) 24-30
Position: Home > Articles > Carbon Storage and Distribution of Eucalyptus urophylla × E.grandis Plantations in Continuous Age Sequences in Southwest Guangxi Agricultural Research and Application 2017 (3) 24-30

桂西南连续年龄序列尾巨桉人工林碳储量及其分布特征

作  者：
杨卫星;李春宁;付军;何斌;滕秋梅;吕小燕
单  位：
广西国有派阳山林场;广西大学林学院
关键词：
尾巨桉人工林;碳贮量;碳分配;年龄序列;桂西南
摘  要：
采用固定标准地法对广西宁明县连续年龄系列(1~4年)生尾巨桉人工林的碳储量和年碳素固定量进行了研究。结果表明:尾巨桉各器官中碳素含量范围在455.4~502.4 g/kg之间,不同器官碳素含量高低的排列顺序为树叶、树干、树皮、树枝、树根。林分中不同结构层次碳素平均含量高低的排列顺序乔木层、地表凋落物层、灌木层、草本层;0~80 cm土壤碳素含量均随林龄的增长而增加。1、2、3和4年生尾巨桉人工林生态系统碳储量依次为88.42、106.84、122.76和135.30 t/hm~2,其中乔木层碳储量占4.84%~35.04%,灌草层占0.38~1.14%,现存凋落物层占为1.85%~2.48%、土壤层占61.77%~92.90%.4个林龄杉尾巨桉人工林乔木层净生产力依次为9.02、23.26、24.56和24.30 t/(hm~2·a),碳素年净固定量分别为4.30、11.12、11.92和11.84 t/(hm~2·a).
译  名：
Carbon Storage and Distribution of Eucalyptus urophylla × E.grandis Plantations in Continuous Age Sequences in Southwest Guangxi
作  者：
YANG Weixing;LI Chunning;FU Jun;HE Bin;TENG Qiumei;LV Xiaoyan;Paiyangshan Forestry Farm of Guangxi;Forestry College, Guangxi University;
关键词：
Eucalyptus urophylla × E.grandis plantation;;carbon storage;;carbon distribution;;age sequence;;southwest Guangxi
摘  要：
The standard plot method was used to study the carbon storage and annual net carbon fixation of 1-year-old to 4-year-old Eucalyptus urophylla ×E.grandis plantations in Ningming county of Guangxi, China. The results showed that carbon content in different organs of E. urophylla ×E.grandis plantation ranged from 455.4 g/kg to 502.4 g/kg,and was in the order as:leaf>stem>bark>branch>root. Carbon content in different layers within stand was in the following order: tree >ground litter >shrub >herb.Carbon content in the 0 ~80 cm of soil declines with increased soil depth. The total carbon storage of 1,2,3 and 4 year old E. urophylla ×E.grandis plantation ecosystem were 88.42 t·hm~(-2), 106.71 t/hm~2, 122.63 t/hm~2 and135.08 t/hm~2, respectively. Of the total storage of carbon, 4.84 %~35.04 % was distributed in arbor layer, 0.38 % ~1.14 % at herb and shrub layer, 1.85 % ~2.48 % at standing li tter layer,61.00 %~92.90 % at soil layer. Annual net productivity at 1-year-old to 4-year-old of the E. urophylla ×E.grandis plantation in the tree layer were 9.02 t·hm~(-2)·a~(-1), 23.26 t·hm~(-2)·a~(-1), 24.56 t·hm~(-2)·a~(-1)和 24.30 t/(hm~2·a), respectively. Annual net carbon fixation were up to 4.30 t/(hm~2·a)、11.12 t/(hm~2·a), 11.92 t/(hm~2·a) and 11.84 t/(hm~2·a), respectively.

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