[1]刘玉平,苏慧,刘贵峰*,等. 罕山自然保护区森林植物群落优势种的种群结构与动态[J].西北林学院学报,2016,31(4):170-175.[doi:doi:10.3969/j.issn.1001-7461.2016.04.29]
　LIU Yu-ping,SU Hui,LIU Gui-feng*,et al. Population Structure and Dynamics of Dominant Species of Main Forest Community in Hanshan Nature Reserves[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2016,31(4):170-175.[doi:doi:10.3969/j.issn.1001-7461.2016.04.29]
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 罕山自然保护区森林植物群落优势种的种群结构与动态()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第31卷
期数:
2016年第4期
页码:
170-175
栏目:
出版日期:
2016-07-31

文章信息/Info

Title:
 Population Structure and Dynamics of Dominant Species of Main Forest Community in Hanshan Nature Reserves
文章编号:
1001-7461(2016)04-0170-06
作者:
 刘玉平; 苏慧; 刘贵峰*; 张卫国
 （内蒙古民族大学 农学院，内蒙古 通辽 028000）
Author(s):
 LIU Yu-ping; SU Hui; LIU Gui-feng*; ZHANG Wei-guo
 (Agricultural College,Inner Mongolia University for the Nationalities,Tongliao,Inner Mongolia 028000,China)
关键词:
罕山自然保护区; 群落类型; 种群结构; 种群动态
Keywords:
Hanshan Nature Reserves;  community type;  population structure;  population dynamics
分类号:
S718.54
DOI:
doi:10.3969/j.issn.1001-7461.2016.04.29
文献标志码:
A
摘要:
 选择罕山国家级自然保护区的山杨群落、白桦群落、黑桦群落和蒙椴群落进行野外群落学调查，采用空间代替时间，以种群的径级结构代替年龄结构的方法，编制优势种群——山杨种群、白桦种群、黑桦种群和蒙椴种群的特定时间生命表，绘制其存活曲线、死亡率曲线、消失率曲线和危险率函数曲线，分析种群的数量动态变化规律。结果表明：山杨种群、白桦种群、黑桦种群和蒙椴种群Ⅰ级树木个体数量最多，随着径级的增大，株数在下降，4个种群径级结构均呈倒“J”型分布；4个优势种群存活曲线均为DeeveyⅡ型，也就是说总体处于一种动态的稳定状态；山杨、黑桦种群死亡高峰在第7龄级，白桦种群的死亡高峰在第6、第1龄级，蒙椴种群的死亡高峰在第5龄级；生存分析表明，4个优势种群的生存率呈单调下降，累计死亡率呈单调上升的趋势，具有前期锐减、中期稳定、后期衰退的特点。山杨种群、白桦种群、黑桦种群和蒙椴种群在本研究区内生长更新良好，在无人为干扰的条件下，可通过自我调节能力而保持种群的稳定性。
Abstract:
 The communities of Populus davidiana,Betula platyphylla,B.dahurica and Tilia mongolica occurring in Hanshan National Nature Reserve were investigated to reveal the quantitative dynamics of populations.The static life tables and the curves of the survival rate,mortality rate,vanishing rate cure,and hazard rate function were made by using the age class structure represented by DBH class.The results showed that,the number of the trees with age class I were dominant in the four populations.The number decreased with the increase of DBH.The distribution of DBH class all had an upside down “J” curve.The curves of the survival rate the four populations could be generally summarized as the type of Deevey Ⅱ,suggesting stable population dynamics.The mortality peaks of P.davidiana and B.dahurica were higher in the age class 7.The mortality peaks of B.platyphylla were higher in the and age class 6 and 1.The mortality peak of T.mongolica was higher in the age class 5.The survival analysis showed that the four population mortality rate increased all along,while the survival rate decreased all the time.The hazard rate function curve showed that the individual number of the four populations decreased rapidly in early age period,stable in middle age period,and declined in old age period.The growth and regeneration of four populations were very well in the research area,and could maintain the population stability without the human disturbance.

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备注/Memo

备注/Memo:
 收稿日期：2015-10-12修回日期：2015-11-04
基金项目：国家自然科学基金（31260108）；通辽市与内蒙古民族大学科技合作项目（SXYB2012083；SXYB2012082）。
作者简介：刘玉平，男，副教授，硕士，研究方向：植物多样性。E-mail:tlliuyuping@163.com
*通信作者：刘贵峰，女，教授，博士，研究方向：植物多样性。E-mail:liuguifeng1234@126.com
更新日期/Last Update: