| 华北落叶松人工林生物生产力研究 |
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| 引用本文： | 刘延文,王西洋,马履一,贾忠奎.华北落叶松人工林生物生产力研究[J].河北林果研究,2013(4):339-343. |
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| 作者姓名： | 刘延文 王西洋 马履一 贾忠奎 |
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| 作者单位： | [1]河北省塞罕坝机械林场,河北围场068466 [2]北京林业大学省部共建森林培育与保护重点实验室,北京100083 |
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| 基金项目： | 林业公益性行业科研专项经费项目（201004021）. |
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| 摘 要： | 以华北落叶松人工林为研究对象，选择18a、22a、38a等3个不同林龄的林分，每个林龄林分设置15块样地。通过样地调查，对华北落叶松人工林的林分生物量、林下植被层生物量、林分净生产力进行研究，以揭示其生物生产力。结果表明：华北落叶松人工林林分生物量随着林龄的增加而增加，18a、22a、38a的林分生物量分别为94．58t／hm2、101．19t／hm2、216．25t／hm2。各器官的生物量分配，以干材所占的比例最大，达到51．36％以上；华北落叶松人工林林下植被层中凋落物层与灌木、草本层的生物量也随着林龄的增加而不断积累；华北落叶松森林净生产力表现为乔木层的净第一生产力、不同林龄阶段的华北落叶松人工林植被净生产力均较高，达到4．60t／（hm2·a）以上，其中干材的净生产力积累最快，为2．36～3．20t／（hm2·a）。
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| 关 键 词： | 森林生物量 生产力 华北落叶松 人工林 |
Biomass productivity of Larix principis-rupprechtii plantation of different age classes |
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| LIU Yan-wen,WANG Xi-yang,MA Lv-yi,JIA Zhong-kui.Biomass productivity of Larix principis-rupprechtii plantation of different age classes[J].Hebei Journal of Forestry and Orchard Research,2013(4):339-343. |
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| Authors: | LIU Yan-wen WANG Xi-yang MA Lv-yi JIA Zhong-kui |
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| Institution: | 1 Saihanba Machinized Forest Center of Hebei,Weichang 068466, China 2 Key Laboratory for Silviculture and Conservation, Beijing Forestry University, Beijing 100083, China) |
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| Abstract: | The experiment was conducted to study Larix principis-rupprechtii of different age classes（18,22,38 years old） in 15 plots of each age. Through standard sample-plot investigation, its stand biomass, undergrowth vegetation biomass, and net productivity were researched in order to reveal its biomass productivity. Results showed that the biomass of Larix principis-rupprechtii plantations increased with stand age. The biomass accumulations of 18, 22 and 38 years old plantations were 94. 58t/hm2, 101. 19 t/hm2 and 216. 25 t/hm2 , respectively. The biomass allocation of its organs showed the maxi- mum proportion of stem reached over 51. 36 ~. The biomass accumulation of litters and shrubs on the herbaceous layer increased with stand age. And the forest net productivity of Larix principis-rupprechtii plantation performances as the first net productivity of arbor layer, with higher net productivity of Larix principis-rupprechtii plantation vegetation of different ages, reaching 4. 60 t/hm2 per year, and the fastest net productivity accumula- tion of stem reaching 2.36-3.20 t/hm2 per year. |
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| Keywords: | forest biomass productivity Larix principis-rupprechtii plantation |
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