| 黄土高原森林林隙特征及植物多样性 |
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| 引用本文： | 李峰,王孝安,郭华,雷利平. 黄土高原森林林隙特征及植物多样性[J]. 干旱区研究, 2009, 26(3) |
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| 作者姓名： | 李峰 王孝安 郭华 雷利平 |
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| 作者单位： | 1. 陕西师范大学,生命科学学院,陕西,西安,710062;衡水学院,生命科学系,河北,衡水,053000
2. 陕西师范大学,生命科学学院,陕西,西安,710062 |
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| 基金项目： | 国家重点基础研究与发展规划(973)资助项目 |
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| 摘 要： | 通过对马栏林区林隙的调查研究,发现其林隙大小以20～40 m2和40～60 m2居多,其中40～60 m2所占数量比例和面积比例均最大.林隙的年龄结构是中前期和中后期数量较多,分别占到林隙总数的42.31%和38.46%.林隙形成方式以砍伐树桩占的比重最大,说明该地区现有的林隙大多是人为干扰形成的.林隙形成木中辽东栎(Quercus liaotungensis)和油松(Pinus tabulaeformis)的株数相对较多,且主要是由中小径级的树木构成.不同大小林隙的植物多样性变化表现为:乔木层面积为40～60 m2时其多样性较高,灌木层和草本层面积均为20～40m2时其生物多样性较高.在不同发育阶段中,草本层的多样性指数在林隙发育的中前期最高,而乔木层和灌木层均在林隙发育到中后期时最高.
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| 关 键 词： | 黄土高原 森林生态 林隙特征 生物多样性 马栏林区 |
Study on the Features and Plant Diversity of the Forest Gaps on the Loess Plateau |
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| LI Feng,WANG Xiao-an,GUO Hua,LEI Li-ping. Study on the Features and Plant Diversity of the Forest Gaps on the Loess Plateau[J]. Arid Zone Research, 2009, 26(3) |
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| Authors: | LI Feng WANG Xiao-an GUO Hua LEI Li-ping |
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| Affiliation: | 1.College of Life Science;Shaanxi Normal University;Xi'an 710062;China;2.Department of Life Science;Hengshui College;Hengshui 053000;China |
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| Abstract: | After investigating the forest gaps on the Loess Plateau,it is found that the sizes of the forest gaps vary mainly in ranges of 20~40 m2 and 40~60 m2,in which the proportions of number and size of the forest gaps of 40~60 m2 are the highest.The quantities of age structure of the forest gaps are high in the prometaphase and late-metaphase,and their proportions are 42.31% and 38.46% of the total forest gap number respectively.The proportion of deforested stubs is the highest in forming the forest gaps,which r... |
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| Keywords: | the Loess Plateau forest gap feature plant diversity Malan Forest Area. |
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