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首页> 外文期刊>Advance journal of food science and technology >Carbon and Nitrogen Pools in an Age-sequence of Olga Bay Larch (Larix olgensis Henry)Stands in North-Eastern China
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Carbon and Nitrogen Pools in an Age-sequence of Olga Bay Larch (Larix olgensis Henry)Stands in North-Eastern China

机译：东北地区奥尔加湾落叶松（Larix olgensis Henry）的年龄序列中的碳和氮库

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摘要

To quantify the potential nitrogen and carbon sink and understand its implication to the regional carbon budget and future forest management, the N and C pools of Olga Bay Larch (Larix olgensis Henry) in five age groups (7.5 to 46 years old) were investigated in North-Eastern China. Twenty-seven sample trees have been cut down by ages and roots of twelve were dug up. Tree components (bark, stem, living and dead branches, foliage, root), shrub and herb, forest floor (coarse woody debris, fine woody debris, snag, slash piles and litter) and mineral soil were sampled. There was a significant difference between the N (p = 0.000＜0.05) and C (p = 0.000＜0.05) concentrations of the tree components, while the difference between the N (p = 0.726＞0.05) and C (P = 0.445＞0.05) concentrations of the stand ages is not significant. Total biomass were 24775.92, 66673.83, 91653.6, 112023.6 and 204103.2 kg/ha in young, middle, near-mature, mature and over-mature stand, respectively. The N and C pools of Larix olgensis ecosystem in each age group were 49.05, 56.50, 72.67, 68.73, 102.50 tN/ha and 89.97, 113.84, 133.58, 152.61, 210.26 tC/ha, respectively. Both N and C density in the mineral soil decreased with the increasing soil depth and the soil layer is an important part of total ecosystem N and C pools in each age group.
机译：为了量化潜在的氮和碳汇，并了解其对区域碳预算和未来森林管理的影响，我们在五个年龄组（7.5至46岁）中调查了奥尔加湾落叶松（Larix olgensis Henry）的氮和碳库。中国东北。根据年龄，砍伐了27棵样本树，挖出了12棵树的根。采样了树木的成分（树皮，茎，活枝和枯枝，树叶，根），灌木和草本植物，林地（粗大的木屑，细小的木屑，粗枝，砍桩和垃圾）和矿物土壤。树木成分的N（p = 0.000 ＜0.05）和C（p = 0.000 ＜0.05）浓度之间存在显着差异，而N（p = 0.726＞ 0.05）和C（P = 0.445＞ 0.05）浓度的林分年龄不显着。在幼龄，中龄，近成熟，成熟和过成熟的林分中，总生物量分别为24775.92、66673.83、91633.6、112023.6和204103.2 kg / ha。每个年龄组的落叶松生态系统氮和碳库分别为49.05、56.50、72.67、68.73、102.50 tN / ha和89.97、113.84、133.58、152.61、210.26 tC / ha。矿质土壤中的氮和碳密度都随着土壤深度的增加而降低，并且土壤层是每个年龄组生态系统氮和碳总量的重要组成部分。

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  • 作者

    Yao Fu; Yujun Sun; Xinjie Wang; Hao Xu;

  • 作者单位

    Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University,Beijing 100083, P.R. China;

    Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University,Beijing 100083, P.R. China;

    Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University,Beijing 100083, P.R. China;

    Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University,Beijing 100083, P.R. China;

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  • 正文语种 eng
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  • 关键词

    Age-sequence; biomass; Larix olgensis; nitrogen and carbon pool;

    机译：年龄顺序;生物质落叶松氮碳库;

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