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林业科学 ›› 2014, Vol. 50 ›› Issue (9): 26-35.doi: 10.11707/j.1001-7488.20140904

• 论文与研究报告 • 上一篇    下一篇

不同森林经营模式对丹清河林场天然次生林碳贮量的影响

戎建涛1 2, 何友均3   

  1. 1. 温州科技职业学院 温州325006;
    2. 中国林业科学研究院资源信息研究所 北京 100091;
    3. 中国林业科学研究院林业科技信息研究所 北京 100091
  • 收稿日期:2013-10-14 修回日期:2014-06-04 出版日期:2014-09-25 发布日期:2014-09-30
  • 基金资助:

    国家自然科学基金项目（31170593）；林业公益性行业科研专项（200904005）。

Effects of Different Forest Management Regimes on Carbon Stock in Natural Secondary Forests at Danqinghe Forestry Farm

Rong Jiantao1 2, He Youjun3   

  1. 1. Wenzhou Vocational College of Science and Technology Wenzhou 325006;
    2. Institute of Forest Resources Information Techniques, CAF Beijing 100091;
    3. Research Institute of Forestry Policy and Information, CAF Beijing 100091
  • Received:2013-10-14 Revised:2014-06-04 Online:2014-09-25 Published:2014-09-30
  • Contact: 何友均

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摘要：

基于目标树经营、粗放经营、无干扰3种经营模式,分析黑龙江省丹清河林场针叶混交林、阔叶混交林、针阔混交林3种天然次生林的碳贮量变化。结果表明: 1) 林分碳贮量排序均为目标树经营(162.74~205.85 t ·hm-2)>无干扰(128.88~150.47 t ·hm-2)>粗放经营(107.59~130.57 t ·hm-2),且目标树经营与无干扰、粗放经营的碳贮量差异显著(P<0.05)； 2) 林分各层次碳贮量大小依次为土壤层(57.33%~70.38%)、乔木层(28.01%~39.83%)、凋落物层(0.50%~2.69%)、灌木层(0.21%~1.00%)、草本层(0.07%~0.56%)； 3) 土壤层碳贮量排序为目标树经营>无干扰>粗放经营,0~20 cm土层碳含量和碳贮量比重最大； 4) 乔木层碳贮量排序均为目标树经营>无干扰>粗放经营,目标树经营与无干扰、粗放经营差异显著(P<0.05),干材碳贮量最大,占乔木层碳贮量的46.58%~54.72%； 5) 灌木层、草本层碳贮量排序均为无干扰>粗放经营>目标树经营,无干扰与粗放经营、目标树经营差异均显著(P<0.05)； 6) 凋落物层碳贮量排序为目标树经营大于粗放经营和无干扰。目标树经营能够增加林分、土壤、乔木层碳贮量,是提高东北天然次生林碳汇功能的重要经营模式。

关键词: 碳贮量, 碳含量, 森林经营模式, 天然次生林

Abstract:

How to increase carbon stock in forest ecosystems by optimizing forest management strategy has increasingly become a concern in the world. We analyzed the changes in carbon stock in three natural secondary forests, i.e., coniferous forest, broadleaved forest and conifer-broadleaved mixed forest, in Danqinghe Forest Farm, Heilongjiang Province, based on the three management regimes including target-trees management, extensive management and non-disturbance regime. The results showed that: 1) The total stand carbon stock was ranked in order of target-tree management (162.74-205.85 t ·hm-2) > non-disturbance management (128.88-150.47 t ·hm-2) > extensive management (107.59-130.57 t ·hm-2), and target-tree management differed significantly in carbon stock from non-disturbance and extensive management (P<0.05). 2) Layers in these stands had different amount of carbon stock, followed in percentage by soil layer (57.33%-70.38%), tree layer (28.01%-39.83%), litter layer (0.50%-2.69%), shrub layer (0.21%-1.00%), and herb layer (0.07%-0.56%). 3) The carbon stock in soil was in order of target-tree management> non-disturbance management > extensive management, and carbon content and carbon stock reached the utmost level in the soil 0-20 cm deep. 4) Carbon stock of tree layer was in order of target-tree management > non-disturbance management > extensive management, and there was significant difference between target-tree management and non-disturbance, extensive management regimes (P<0.05), while carbon stock in stems were proportionally the highest in the tree layer, accounting for 46.58％ to 54.72％. 5) Carbon stock in shrubs and herbs showed the same order as non-disturbance management > extensive management > target-tree management, and non-disturbance management was significantly different from target-tree and extensive management regimes(P<0.05). 6) In terms of carbon stock in litters, target-tree management outperformed extensive management and non-disturbance management. Target tree management could increase carbon stock of stand level, soil layer, tree layer, indicating that it was important forest management regime for improving the carbon sink ability of secondary forest in northeast.

Key words: carbon stock, carbon content, forest management regimes, natural secondary forest

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