长白山杨桦次生林生长过程与演替动向分析  

Growth Process and Succession Trend of Polar-Birch Secondary Forests in Changbai Mountain,Northeast China

作　　者：龚直文 亢新刚[1] 顾丽[1] 杨华[1] 

机构地区：[1]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,北京林业大学林学院,北京100083

出　　处：《林业科学研究》2009年第3期379-384,共6页Forest Research

基　　金：国家自然科学基金(30671667);国家“十一五”科技支撑课题(2006BAD03A08-04)

摘　　要：以长白山金沟岭林场的杨桦次生林为研究对象,根据山杨、白桦解析木资料,利用Richards方程拟合了白桦和山杨的胸径、树高和材积的生长方程,分别编制了二者的生长过程表;同时根据径阶组划分标准,统计各树种在不同径阶组中的株数及其所占的比例,从而对林分内各乔木树种的演替动向进行分析。研究结果表明:山杨和白桦作为林分内的先锋树种,处于衰退趋势;红松、冷杉与云杉为地带性顶级树种,将在地带性顶级群落中占据为优势树种;其他树种在演替过程中变化不明显。Permanent plots in the polar-birch secondary forests in Changbai Mountain, Northeast China, were established. According to the data of the analytic trees, i.e. the species of Betula platyphylla Suk and Populus davidiana Dode, the authors fitted the Richards equation using the diameter at breast height, tree height and volume of the growth equation, and compiled the growth process tables. Based on the standard of arbor species diameter grade, the authors made the statistics of the number and proportion in every grade, and the succession trend was analyzed. The results show that the Betula platyphylla Suk and Populus davidiana Dode, as the pioneer tree species, are declining, while Pinus koraiensis Sieb. et climax species, and will be the dominant species in the Zucc, Abies Mill and Picea asperata Mast. are the zonal zonal climax communities. The other species change little during the process of succession.

关 键 词：杨桦次生林 生长过程 次生演替 Richards生长方程 径阶组 

分 类 号：S718.54[农业科学—林学]