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| 小陇山红桦次生林物种组成与立木的点格局分析 | |
| 作者姓名： | Guo YX Kang B Li G Wang DX Yang GH Wang DW |
| 作者单位： | 1. 西北农林科技大学农学院,陕西杨凌,712100 2. 西北农林科技大学生命学院,陕西杨凌,712100 3. 西北农林科技大学林学院,陕西杨凌,712100 4. 西北农林科技大学农学院,陕西杨凌712100;西北农林科技大学林学院,陕西杨凌712100 5. 小陇山林业科学研究所,甘肃天水,741020 |
| 基金项目： | 科技部科技基础性工作专项(2007FY110800)资助 |
| 摘 要： | 选择秦岭西段小陇山典型红桦次生林群落样地进行物种组成及种群径级结构研究,并运用单变量O-ring函数、双变量O-ring函数对各种群的空间分布格局及种间相关性进行多尺度分析.结果表明:在红桦次生林群落样地中,红桦占据明显的优势地位;从径级结构看,红桦幼苗匮乏,天然更新不良,而巴山冷杉和山杨更新状态良好;红桦和旱柳主要表现为随机分布,巴山冷杉和山杨表现为小尺度聚集性分布格局;红桦与巴山冷杉和山杨在中尺度上呈正相关,而旱柳与红桦、巴山冷杉和山杨在小尺度上呈负相关,其余种间相关性不明显.目前小陇山红桦次生林群落种群的分布格局在小尺度上决定于种群的生物学特性,而在更大尺度上决定于环境异质性;未来一段时间内,先锋种群红桦将处于生长优势地位,但从长远看,仍需要人工辅助更新. |
| 关 键 词： | 红桦次生林 分布格局 径级结构 种间关系 点格局分析 小陇山 |
Species composition and point pattern analysis of standing trees in secondary Betula albosinensis forest in Xiaolongshan of west Qinling Mountains |
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| Guo YX,Kang B,Li G,Wang DX,Yang GH,Wang DW.Species composition and point pattern analysis of standing trees in secondary Betula albosinensis forest in Xiaolongshan of west Qinling Mountains[J].Chinese Journal of Applied Ecology,2011,22(10):2574-2580. | |
| Authors: | Guo Yao-xin Kang Bing Li Gang Wang De-xiang Yang Gai-he Wang Da-wei |
| Institution: | GUO Yao-xin1,KANG Bing2,LI Gang2,WANG De-xiang3,YANG Gai-he1,3,WANG Da-wei4 (1College of Agronomy,Northwest A & F University,Yangling 712100,Shaanxi,China,2College of Life Science,3College of Forestry,4Xiaolongshan Research Institute of Forestry,Tianshui 741020,Gansu,China). |
| Abstract: | An investigation was conducted on the species composition and population diameter-class structure of a typical secondary Betula albo-sinensis forest in Xiaolongshan of west Qinling Mountains, and the spatial distribution pattern and interspecific correlations of the main populations were analyzed at multiple scales by the O-ring functions of single variable and double variables. In the test forest, B. albo-sinensis was obviously dominant, but from the analysis of DBH class distribution, the B. albo-sinensis... |
| Keywords: | secondary Betula albo-sinensis forest distribution pattern diameter-class structure interspecific relationship point pattern analysis Xiaolongshan Mountain |
| 本文献已被 CNKI 万方数据 PubMed 等数据库收录！ | |