| 两种不同干扰方式下的天山云杉更新格局 |
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| 引用本文： | 刘云,侯世全,李明辉,潘存德,孙丹峰,刘云慧. 两种不同干扰方式下的天山云杉更新格局[J]. 北京林业大学学报, 2005, 27(1): 47-50 |
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| 作者姓名： | 刘云 侯世全 李明辉 潘存德 孙丹峰 刘云慧 |
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| 作者单位： | 1.1北京林业大学资源与环境学院2 北京林业大学生物科学与技术学院 |
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| 基金项目： | 国家自然科学基金 , 教育部优秀青年教师资助计划 |
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| 摘 要： | 该文采用点格局分析方法，对新疆天山中部林区天山云杉林在林冠和强度择伐干扰方式下的天然更新格局进行了研究.结果表明:在林冠干扰方式下，林冠空隙（林窗）内天山云杉天然更新幼树/幼苗呈现聚集分布，并在每一聚集分布中都有最大聚集强度；林冠空隙内天然更新幼树/幼苗与林冠空隙形成木呈现出在空间位置上的依存关系.这在所研究的尺度范围内（130 m×80 m标准地），强度择伐干扰后天山云杉保留木呈现聚集格局，天然更新幼树/幼苗与保留木之间依空间尺度由小到大而在空间上呈现斑块镶嵌、随机排列和空间依存，天然更新幼树/幼苗与择伐作业采伐木伐桩呈现出在空间位置上的依存关系.表明在天山云杉林分中，天然更新幼树/幼苗与强度择伐作业采伐木伐桩之间具有类似于其与林冠空隙形成木之间的空间位置关系.说明在创造天然更新的条件上，强度择伐作业的采伐木具有某些与林冠空隙形成木相同的生态作用.
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| 关 键 词： | 天山云杉 干扰 更新格局 点格局 |
| 文章编号： | 1000-1522(2005)01-0047-04 |
| 收稿时间： | 1900-01-01 |
Regeneration pattern of Picea schrenkiana var. tianschanica forest under two different disturbances |
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| LIU Yun,HOU Shi-quan,LI Ming-hui,PAN Cun-de,SUN Dan-feng,LIU Yun-hui. Regeneration pattern of Picea schrenkiana var. tianschanica forest under two different disturbances[J]. Journal of Beijing Forestry University, 2005, 27(1): 47-50 |
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| Authors: | LIU Yun HOU Shi-quan LI Ming-hui PAN Cun-de SUN Dan-feng LIU Yun-hui |
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| Affiliation: | 1 Department of Landscape Architecture, Beijing Agricultural College,102206, P.R China; 2 College of Resource and Environment, China Agricultural University, Beijing, 100094, P.R.China; 3 South China Institute of Botany, Chinese Academy of Sciences, Guangzhou, 510650, P.R. China; 4 Department of Forestry, Xinjiang Agricultural University, Urumchi, 830052,P.R. China. |
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| Abstract: | Using a point pattern analysis method, the natural regeneration pattern of Picea schrenkiana var. tianschanica forests under two types of disturbance (namely canopy disturbance and intense selection cutting disturbance) was studied in west China’s Xinjiang Uygur Autonomous Region. The results indicate that under canopy disturbance, the naturally regenerated seedlings in the canopy gaps present a cluster distribution pattern and have a largest cluster intensity in every distribution There exist spatially dependent relationships between naturally regenerated seedlings and gap makers. Under intense selection cutting disturbance, the saved trees in P. schrenkiana var. tianschanica forests present cluster distribution pattern in the sample plots investigated (130 m×80 m in size). The relationships between naturally regenerated seedlings and saved trees show an embedded clot, random arrangement and spatial dependence according to the magnitude of the spatial scale. And spatial dependence exists between naturally regenerated seedlings and felled trees, similar to the relationship between seedlings and gap makers in P. schrenkiand var. tianschanica forests. |
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| Keywords: | Picea schrenkiana var. tianschanica disturbance regenerated pattern point pattern |
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