| 华北落叶松人工林短周期间伐与林分生产力的关系 |
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| 引用本文： | 李军,王永明,陈波,赵心苗,杨新兵.华北落叶松人工林短周期间伐与林分生产力的关系[J].中国水土保持科学,2012,10(5):90-93. |
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| 作者姓名： | 李军 王永明 陈波 赵心苗 杨新兵 |
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| 作者单位： | 1. 河北省木兰围场国有林场管理局,068450,河北围场
2. 河北农业大学林学院,071000,河北保定 |
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| 基金项目： | 林业公益性行业科研专项“中国森林净生产力多尺度长期观测与评价研究”（200804006/rhh-09） |
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| 摘 要： | 为了研究短期间伐对华北落叶松人工林林分生长和生产力的影响,设置不同保留密度(450、600、750、900株/hm2)的间伐样地以及相应的对照样地,对间伐前后林分的树高、胸径、单株材积、蓄积量、生物量和生产力进行测量与计算。结果表明:不同保留密度下,各间伐样地胸径、树高和单株材积的生长量均大于对照样地;由于保留密度的减小,各间伐样地蓄积量和生物量小于对照样地,各间伐样地生产力均小于对照样地(7 969 kg/(hm2.a));但是其生长率大于对照样地。抚育间伐改变了林分的空间结构和生长环境,明显促进了林木的生长,增加了林地的经济效益。
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| 关 键 词： | 华北落叶松 人工林 间伐 生产力 |
Relationship between the short-term thinning of Larix principis-rupprechtii plantation and forest productivity |
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| Li Jun
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Wang Yongming
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Chen Bo
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Zhao Xinmiao
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Yang Xinbing.Relationship between the short-term thinning of Larix principis-rupprechtii plantation and forest productivity[J].Science of Soil and Water Conservation,2012,10(5):90-93. |
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| Authors: | Li Jun Wang Yongming Chen Bo Zhao Xinmiao Yang Xinbing |
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| Institution: | 1.Mulan Weichang Forestry Administration of Hebei,068450,Weichang,Hebei;2.College of Forest,Agricultural University of Hebei, 071000,Baoding,Hebei： China) |
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| Abstract: | In order to study the effect of short-term thinning on the growth and productivity of Larix principis-rupprechtii plantation,thinning plots with different reserve densities（450,600,750,900 strains/hm2） and the corresponding control plots were set.Tree height,diameter,individual volume,stand volume,biomass and productivity before and after thinning were measured and calculated.The results show that： with different reserve density,growth of diameter,tree height and individual volume in thinned plots was larger than that in control plots;with decreased reserve density,the stand volume and biomass in thinned plots were less than that in control plots;the productivity of thinned plots decreased by 7 969 kg/（hm2·a）compared with control,but its growth rate was greater than the control plots.Thinning changed the spatial structure and growth conditions of stand,promoted growth of trees significantly,and increased the economic benefit of forest. |
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| Keywords: | Larix principis-rupprechtii plantation thinning productivity |
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