|
|||||
|
|
| 冀北山区华北落叶松桦木混交林空间结构分析 | |
| 引用本文： | 刘凤芹,曹云生,杨新兵,张俊英,宋庆丰,鲁绍伟.冀北山区华北落叶松桦木混交林空间结构分析[J].内蒙古农业大学学报(自然科学版),2011,32(3):32-38. |
| 作者姓名： | 刘凤芹 曹云生 杨新兵 张俊英 宋庆丰 鲁绍伟 |
| 作者单位： | 1. 北京林业大学 北京100083 2. 河北农业大学 河北保定071000 3. 邢台市林业局 邢台054000 4. 中国林业科学研究院 北京100091 |
| 基金项目： | 国家林业局林业公益性项目子课题“冀北山区典型森林生态系统健康维护与经营技术研究”(200804022F) |
| 摘 要： | 本研究以河北围场县北沟林场的典型林分类型-华北落叶松桦木混交林-为研究对象,通过混交度、大小比数和角尺度以及点格局方法分析了林分的空间结构特征。结果表明:此林分中主要有8个种群,华北落叶松(Lar-ix principis-rupprechtii Mayr)和桦木(白桦(Betula platyphylla Suk)和黑桦(Betula dahurica Pall.))在数量和断面积比例占优势,是林分中的优势树种;华北落叶松的平均混交度为0.52,混交程度高,主要以中度混交和强度混交为主,桦木的平均混交度为0.56以中度混交为主,其他伴生树种的混交程度较高;林分中的华北落叶松和桦木的相对优势度较高,以中庸木和优势木为主,分别占63%和66%,其它树种的优势度不明显;该林分的空间分布格局为聚集分布,但聚集程度不明显,偏向随机,两种格局分析结果相近。 |
| 关 键 词： | 华北落叶松桦木混交林 混交度 大小比数 角尺度 点格局分析 |
SPATIAL STRUCTURE AND POINT PATTERN ANALYSIS OF Larix Principis-rupprechtii mayr AND Betula Spp. MIXED FOREST IN NORTHERN HEBEI MOUNTAIN |
|
| LIU Feng-qin,CAO Yun-sheng,YANG Xin-bing,ZHAO Jun-ying,SONG Qing-feng,LU Shao-wei.SPATIAL STRUCTURE AND POINT PATTERN ANALYSIS OF Larix Principis-rupprechtii mayr AND Betula Spp. MIXED FOREST IN NORTHERN HEBEI MOUNTAIN[J].Journal of Inner Mongolia Agricultural University(Natural Science Edition),2011,32(3):32-38. | |
| Authors: | LIU Feng-qin CAO Yun-sheng YANG Xin-bing ZHAO Jun-ying SONG Qing-feng LU Shao-wei |
| Institution: | LIU Feng-qin1,CAO Yun-sheng2,YANG Xin-bing2,ZHAO Jun-ying3,SONG Qing-feng4,LU Shao-wei1(1.Beijing Forestry University,Beijing 100083,China,2.Agricultural University of County,Baoding 071000,3.Forestry Department of Xingtai,Xingta 054000,4.Chinese Academy of Forestry,Beijing 100091,China) |
| Abstract: | Study by the typical forest type-Larix principis-rupprechtii Mayr and Betula spp.mixed fores-in Weichang of Hebei,and by using the uniform angle index,neighborhood comparison,mingling degree and point pattern analysis,analyzed the spatial structural characteristics of Larch and birch mixed forest.The results showed that:There were 8 populations in the tree layer of the forest,among which Larix principis-rupprechtii Mayr and Betula spp.had the obvious advantage in population density and basal area,are the do... |
| Keywords: | Larix principis-rupprechtii Mayr and Betula spp mixed forest Mingling degrees Neighborhood comparisons uniform angle index point pattern analysis |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |