| 次生林抚育保留密度对林分生长的影响 |
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| 引用本文： | 刘玉民,吴青山,刘亚敏,张天勇.次生林抚育保留密度对林分生长的影响[J].西南农业大学学报,2003,25(6):546-549. |
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| 作者姓名： | 刘玉民 吴青山 刘亚敏 张天勇 |
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| 作者单位： | [1]西南农业大学资源与环境学院，重庆400716 [2]陕西省镇安县林业资源调查设计队，陕西镇安711500 [3]西北农林科技大学林学院，陕西杨凌712100 |
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| 摘 要： | 通过对秦岭林区中龄次生林抚育间伐保留密度进行了长期定位研究，提出了林分组成为4栎3榫3山扬的混交次生林的抚育合理密度。研究结果表明：该林分的合理保留密度为l500拂／hm^2，在此密度下，树高年生长量的变幅为0．1lm，胸径年生长量的变幅为0．09cm，蓄积的年增长量为17．00m^3／hm^2，这些指标在各保留密度中都达到了最大值。
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| 关 键 词： | 次生林 保留密度 林分生长 抚育 |
| 文章编号： | 1000-2642(2003)06-0546-04 |
| 修稿时间： | 2003年6月5日 |
EFFECT OF RESERVE DENSITY IN INTERMEDIATE CUTTING IN STAND GROWTH IN SECONDARY FORESTS |
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| LIU Yu-min,WU Qing-shan,LIU Ya-min,ZHANG Tian-yong.EFFECT OF RESERVE DENSITY IN INTERMEDIATE CUTTING IN STAND GROWTH IN SECONDARY FORESTS[J].Journal of Southwest Agricultural University,2003,25(6):546-549. |
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| Authors: | LIU Yu-min WU Qing-shan LIU Ya-min ZHANG Tian-yong |
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| Institution: | LIU Yu-min~1,WU Qing-shan~2,LIU Ya-min~3,ZHANG Tian-yong~2 |
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| Abstract: | In a long-term experiment at a fixed site, different reserve densities in intermediate cutting in secondary forests in the Qinling Mountains were compared. The advisable density in tending cutting was recommended for the mixed secondary forests with a stand composition of 4 Quercus 3 Betula 3 Populus davidana. A reserve density of 1 500 trees/hm~2 was considered to be optimum, giving the maximum annual growth in tree height (0.11 m), DBH (0.09 cm) and standing stock (17.00 m~3/hm~2). |
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| Keywords: | secondary forest reserve density stand growth |
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