冀北山地典型华北落叶松群落空间格局  

Spatial pattern analysis of typical Larix principis-rupprechtii communities in mountainous areas of Northern Hebei

作　　者：张建华[1,2] 郭宾良 杨新兵[3] 王鹏 任仙[3] 

机构地区：[1]北京林业大学,北京100083 [2]河北木兰围场国有林场管理局,河北围场068450 [3]河北农业大学林学院,河北保定071001 [4]上海勘测设计研究院,上海200434

出　　处：《河北农业大学学报》2014年第6期56-61,72,共7页Journal of Hebei Agricultural University

基　　金：河北省林业科学技术研究项目(1211435;1212436;1403451);林业公益性行业科研专项子课题(200804022F)

摘　　要：以木兰围场国有林场管理局北沟林场4种典型华北落叶松林分类型为研究对象,运用Ripley’s K(r)函数的变形L(r)函数分析其空间分布格局与种间关联,旨在确定最佳华北的落叶松林分类型。研究区内各主要种群空间分布格局均表现为聚集分布,但伴随着空间尺度的变化,聚集程度变化趋势各不相同;华涨落叶松在不同尺度上与白桦、山杨等存在较为激烈的竞争关系,且具有一定的竞争优势,但与云杉相比处于竞争劣势;与研究区主要种群格局一致,林分中枯立木多为聚集分布。群落空间格局与种间关系体现了树种的生长竞争关系,在生长过程中,山杨、白桦将逐步被华北落叶松、云杉所取代,最终形成高效稳定的落杉针阔混交林群落。The objective of this study was to explore the forest vegetation succession in the rocky mountain area of Northern Hebei,China. Spatial patterns and interspecific relationships of pure larch forest, larch and birch mixed forest, larch and broad-leaved mixed forest, Picea and Larix theropencedrymion, defoliate broad-leaved mixed forest and L. principis-rupprechtii ＆ P. asperata mixed forest were analyzed using L（r） function based on Ripley＇s K（r）. The results indicated that the major populations showed inordinately aggregated distribution, and the aggregated degrees differed with the changes in scales. Intense competitions were de- tected between L. principis-rupprechtii and B. platyphlla, P. davidiana. Comparing with P. asperata, L. principis-rupprechtii was at a disadvantage. Spatial pattern of standing dead trees was consistent with dominated communities; Community spatial pattern and interspecific competition between the relationship reflects the growing tree species. In the grow process, B. platyphlla and P. davidiana will be replaced by L. principis-rupprechtii and P. aspera- ta, finally form efficient and stable theropencedrymion dominated by L. principis-rupprechtii P. asperata.

关 键 词：种群空间格局 种间关系 华北落叶松 演替 

分 类 号：S791.229[农业科学—林木遗传育种]