| 马尾松与红锥混交异龄林生物量分配格局 |
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| 引用本文： | 赵金龙,梁宏温,温远光,卢立华,明安刚,苏建苗.马尾松与红锥混交异龄林生物量分配格局[J].中南林业科技大学学报,2011,31(2). |
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| 作者姓名： | 赵金龙 梁宏温 温远光 卢立华 明安刚 苏建苗 |
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| 作者单位： | 广西大学林学院;中国林业科学研究院热带林业实验中心; |
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| 基金项目： | “十一五”广西林业科技项目“广西主要人工林生态功能研究”(桂林科字2009[08]) |
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| 摘 要： | 在经过三次抚育间伐的24 a生马尾松林下套种红锥,经过26 a的培育后形成了针阔混交异龄林。于2009年12月按相邻网格样方法设立固定样地(以50 a生马尾松纯林作对照),按径阶平均木法分别测定马尾松与红锥的林木生物量。结果表明:马尾松-红锥混交异龄林乔木层的生物量为220.072 t/hm2,比同龄马尾松纯林(241.618 t/hm2)的低8.92%;其净生产量为5.341 t/(hm2.a),比同龄马尾松纯林的高10.53%;其林分平均单株生物量比同龄马尾松纯林的低54.72%,且差异达到显著水平(P<0.05)。两种林分乔木层的生物量、净生产量和平均单株生物量的差异是由于林木年龄、林木保存密度及其分布不均匀性的共同影响结果。马尾松-红锥混交异龄林的地上部分生物量空间结构与马尾松纯林相比存在明显差异,混交林在树干高度6～8 m段开始出现枝叶,8～20 m段出现了枯枝,其枝叶生物量有两个峰值(14～16 m和20～22 m);纯林则在树干高度为8～10 m段开始出现枝叶,在10～20 m段出现了枯枝,其枝叶生物量只有一个峰值(20～22 m)。
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| 关 键 词： | 马尾松 红锥 异龄混交林 生物量 分配格局 |
Distribution pattern of biomass in the mixed uneven-aged stands of Pinus massoniana and Castanopsis hystrix |
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| ZHAO Jin-long,LIANG Hong-wen,WEN Yuan-guang,LU Li-hua,MING An-gang,SU Jian-miao.Distribution pattern of biomass in the mixed uneven-aged stands of Pinus massoniana and Castanopsis hystrix[J].Journal of Central South Forestry University,2011,31(2). |
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| Authors: | ZHAO Jin-long LIANG Hong-wen WEN Yuan-guang LU Li-hua MING An-gang SU Jian-miao |
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| Institution: | ZHAO Jin-long1,LIANG Hong-wen1,WEN Yuan-guang1,LU Li-hua2,MING An-gang2,SU Jian-miao2(1.College of Forestry,Guangxi University,Nanning 530005,Guangxi,China,2.The Experimental Centre of Tropical Forestry,CAF,Pingxiang,532600,China) |
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| Abstract: | After three times thinning,Castanopsis hystrix were separately planted under the canopy of the 24 years old Piuns massoniana plantation,and developed into closed mixed stands of different ages after 26 years of management.In December 2009,the fixed sample plots were set up in the mixed unevened-aged stands by the adjacent grid-like method of fixed sample(with 50 years old pure Pinus massoniana plantation as control group),according to the average diameter determination method the biomasses of the two kinds ... |
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| Keywords: | Pinus massoniana Castanopsis hystrix mixed stands of different ages biomass distribution pattern |
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