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| 取样面积对北京市蒙古栎林垂直层次结构分析结果的影响 | |
| 引用本文： | 郑景明,姜英淑,王襄平,周志勇,付士龙,李华. 取样面积对北京市蒙古栎林垂直层次结构分析结果的影响[J]. 北京林业大学学报, 2010, 0(Z1) |
| 作者姓名： | 郑景明 姜英淑 王襄平 周志勇 付士龙 李华 |
| 作者单位： | 北京林业大学省部共建森林培育与保护教育部重点实验室;北京市林业种子苗木管理总站;北京市平谷区四座楼林场;北京市延庆县园林绿化局四海林业工作站; |
| 基金项目： | 北京市科委项目(Z08050602970802); 北京市教委对北京林业大学生态学重点学科建设项目(2009) |
| 摘 要： | 采用连续样带法调查北京延庆的蒙古栎天然林,根据树冠光竞争高度原理划分不同取样面积下的林分垂直分层,并结合对林分垂直结构复杂性的分析,探讨取样面积对森林垂直结构研究结果的影响。结果表明:林分垂直分层的结果受取样面积的影响明显,取样面积过小时无法反映垂直分层的实际情况。反映林分垂直结构复杂性的指标(树高、枝下高、树冠长度的标准差)随着取样面积的增加明显上升,但在面积大于400～600m2之后趋于稳定。600m2的取样面积才能有效研究北京蒙古栎林的群落垂直结构,以往根据种面积关系确定的常用最小取样面积标准(200～400m2)明显偏小,不足以满足研究群落结构复杂性的需要。 |
| 关 键 词： | 垂直结构 蒙古栎林 最小取样面积 |
Effects of sampling area on analyses of vertical structure in Quercus mongolica forest, Beijing |
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| ZHENG Jing-ming,JIANG Ying-shu,WANG Xiang-ping,ZHOU Zhi-yong,FU Shi-long,LI Hua. Key Laboratory for Silviculture , Conservation of Ministry of Education,Beijing Forestry University,,P.R.China, Forest Seed , Seedling Center of Beijing,, Sizuolou Forest Farm of Pinggu District,Beijing,, Sihai Forestry Station of Yanqing County,,P.R.China.. Effects of sampling area on analyses of vertical structure in Quercus mongolica forest, Beijing[J]. Journal of Beijing Forestry University, 2010, 0(Z1) | |
| Authors: | ZHENG Jing-ming JIANG Ying-shu WANG Xiang-ping ZHOU Zhi-yong FU Shi-long LI Hua. Key Laboratory for Silviculture Conservation of Ministry of Education Beijing Forestry University P.R.China Forest Seed Seedling Center of Beijing Sizuolou Forest Farm of Pinggu District Beijing Sihai Forestry Station of Yanqing County P.R.China. |
| Affiliation: | ZHENG Jing-ming1,JIANG Ying-shu2,WANG Xiang-ping1,ZHOU Zhi-yong1,FU Shi-long3,LI Hua4. 1 Key Laboratory for Silviculture and Conservation of Ministry of Education,Beijing Forestry University,100083,P.R.China,2 Forest Seed and Seedling Center of Beijing,100029,3 Sizuolou Forest Farm of Pinggu District,Beijing,101207,4 Sihai Forestry Station of Yanqing County,102107,P.R.China. |
| Abstract: | We examined the effects of sampling area on the vertical structure analysis in a natural oak (Quercus mongolica) forest of Yanqing, Beijing. The results showed that: 1) sampling area had remarkable effect on the vertical stratification analysis of forest, and the analyses based on small plots may not be presenting reliable patterns. 2) Complexities of forest vertical and horizontal structure, as indicated by several indices (e.g. standard deviation of height under branch, tree height and diameter), increase... |
| Keywords: | vertical structure Quercus mongolica forest sampling area |
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