塔河流域天然胡杨林不同林龄地上生物量及碳储量
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中央财政林业科技推广项目“荒漠林生态系统服务功能监测评估技术推广示范”(xjlk010);新疆林业生态服务功能监测评估项目(xjlk001)


Aboveground Biomass and Carbon Storage of Populus Euphratica Plantation with Different Ages in Tahe River Basin
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    [目的] 探讨不同林龄单株胡杨地上部分生物量、林分的生物量及碳储量的分布特征,为进一步开展胡杨天然林生态系统碳循环、碳储量、固碳速率和潜力研究提供基础。[方法] 以新疆维吾尔自治区轮台县天然胡杨林为研究对象,利用不同林龄下不同径阶的标准解析木样本数据,构建胡杨地上部分各器官的生物量回归模型,探讨不同林龄胡杨地上部分的生物量组成、分配以及各器官生物量随年龄的变化规律。[结果] 随着林龄的增加,单株胡杨地上部分各器官生物量呈上升趋势,其中树干占主导地位。幼龄林、中龄林、近熟林、成熟林、过熟林的林分地上生物量分别为:4.91,7.95,19.47,61.95,47.64 t/hm2,且随林龄的增加胡杨林地上部分生物量先增加后稍有降低;胡杨林地上部分不同器官平均含碳率从大到小依次为:树干(48.17%) > 树枝(47.75%) > 树皮(46.13%) > 树叶(44.90%),且随林龄的增加不同器官含碳率先增加后降低,但各器官之间含碳率差异不显著;塔河流域胡杨林碳储量随林龄先增加后降低,大小顺序为成熟林(30.38 t/hm2) > 过熟林(23.26 t/hm2) > 近熟林(9.30 t/hm2) > 中龄林(3.69 t/hm2) > 幼龄林(2.20 t/hm2)。[结论] 地上部分各器官碳储量按依次排列为:树干 > 树枝 > 树皮 > 树叶,树干是胡杨林地上部分碳储量的主要器官。

    Abstract:

    [Objective] The objective of this study is to investigate the distribution characteristics of the stand biomass and carbon storage of Populus euphratica with different ages, in order to provide the basis for the further research of forest ecosystem carbon cycle, carbon storage, carbon sequestration rate and potential.[Methods] Taking natural Populus euphratica forest in Luntai County, Xinjiang Uygur Autonomous Region as the research object, the regression models of aboveground biomass were constructed based on the analysis of the different ages and diameter grades of P. euphratica plantation sample tree. The distribution of community biomass and carbon storage in each organ biomass was investigated in different layer with different ages.[Results] The aboveground biomass of P. euphratica increased with the increase of age and the biomass of trunk was the greatest. With the increase of age, the aboveground biomass of P. euphratica increased initially and then decreased slightly. The aboveground biomass of young forest, middle-aged forest, near mature forest, mature forest and over mature forest was 4.91, 7.95, 19.47, 61.95 and 47.64 t/hm2, respectively. The average carbon content was showed as:trunk (48.17%) > branch (47.75%) > bark (46.13%) > leaf (44.90%), and there was no significant differences among them. With the increase of age, the carbon storage of the aboveground tree layer of P. euphratica increased initially and then decreased slightly, which showed as:mature forest (30.38 t/hm2) > over mature forest (23.26 t/hm2) > near-mature forest(9.30 t/hm2) > middle-aged forest(3.69 t/hm2) > young forest(2.20 t/hm2).[Conclusion] The carbon storage of above ground organs in P. euphratica was:trunk > branch > bark > leaf, and the trunk was the main parts of the carbon reserves.

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刘茂秀,史军辉,王新英,马学喜.塔河流域天然胡杨林不同林龄地上生物量及碳储量[J].水土保持通报,2016,36(5):326-332,339

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  • 收稿日期:2015-10-19
  • 最后修改日期:2015-12-24
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  • 在线发布日期: 2016-11-22
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