不同密度山地速生工业原料林生物量的研究  

Study on Biomass of Different Density Fast-growing Industrial Forest at Mountainous Region

作　　者：柳新红[1] 吴林森[2] 王军峰 葛永金 谢建秋 

机构地区：[1]浙江省林业科学研究院,浙江杭州310023 [2]丽水职业技术学院,浙江丽水323000 [3]浙江省丽水市林业科学研究院,浙江丽水323000

出　　处：《浙江林业科技》2009年第3期14-18,共5页Journal of Zhejiang Forestry Science and Technology

基　　金：浙江省林业厅科技计划项目"短周期工业原料林树种选择和高效栽培技术研究"(2005SY04);浙江省科技计划项目"特种工艺用材新品种选育及定向培育研究与中试"(2007C12034)

摘　　要：通过对4年生马褂木、邓恩桉、杜英3个树种不同密度条件下山地林分生物量的调查分析，结果表明：①4年生林分平均胸径5．08cm，树高4．96m，蓄积25．52m^3／hm^2；平均单株生物量4．18k，其中树干2．95kg，树皮0．36kg，树枝0．73kg，树叶O．20kg；林分平均总生物量达到16．98t／hm^2，其中树干10．43t／hm^2，树皮1．29t／hm^2，树枝2．25t／hm^2，树叶0．71t／hm^2，凋落物2．53t／hm^2②不同密度不同树种的林分生物量存在极显著差异，1．0m×1．8m密度极显著大于其它密度，马褂木极显著大于其它树种。1．0m×1．8m密度的马褂木林分生物量达到41．71t／hm^2极显著大于其它林分，可以作为山地短轮伐期工业原料林的主要经营模式；③在空间分布上，山地工业原料林单株生物量由基部向上逐渐减少，呈塔形分布，树干和树皮生物量主要集中在树体的1／2树高以下，枝叶主要集中在中间区段，马褂木在3～6m树高处，邓恩桉在3～5m树高处，杜英在1～4m树高处，是整个林分光合作用的主要层面。Investigations were carried out on biomass of different density forests of Liriodendron chmense, Eucalyptus dunnii and Elaeocarpus decipiens at mountainous region in Lishui, Zhejiang province. The result demonstrated that 4-year stand of the above-mentioned three species had mean DBH of 5.08, height of 4.96m and volume of 25.52 m^3/hm^2, mean single tree biomass of 4.18kg, among which trunk of 2.95kg, bark of 0.36kg, branch of 0.73kg arid leaf of 0.20kg. Mean total biomass of each species reached 16.98t/ha, among which 10.43 t/ha of trunk, 1.29 t/ha of bark, 2.25 t/ha of branch, 0.71 t/ha of leaf and 2.53 t/ha of litter. It had great difference of forest biomass for different density and different tree species, the largest was the density of 1.0 m-1.8 m and the species of L. chinense, reached 41.71 m^3/hm^2,which could be recommended as the management model for short-rotation industrial forest at mountainous region. Spatial distribution of these species biomass decreased from the base to the top, aggregated at the medium, L. chinense at 3-6m, Eu. dunnii at 3-5m and E. sylvestris at 1-4m.

关 键 词：生物量 林分密度 工业原料林 马褂木 邓恩桉 杜英 

分 类 号：S718.556[农业科学—林学]