| 毛乌素沙地油蒿群落的物种组成与数量分类 |
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| 引用本文： | 王妍,吴波,卢琦,贾子毅,刘广峰.毛乌素沙地油蒿群落的物种组成与数量分类[J].北京林业大学学报,2006(Z2). |
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| 作者姓名： | 王妍 吴波 卢琦 贾子毅 刘广峰 |
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| 作者单位： | 中国林业科学研究院林业研究所，中国林业科学研究院林业研究所，中国林业科学研究院林业研究所，中国林业科学研究院林业研究所，东北林业大学林学院 国家林业局林木培育重点实验室，国家林业局林木培育重点实验室，国家林业局林木培育重点实验室，国家林业局林木培育重点实验室 |
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| 基金项目： | 国家自然科学基金项目(30571528)，“十五”国家科技攻关项目(2005BA517A04)，科技部国际科技合作重点项目(2003DFB00009) |
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| 摘 要： | 通过对油蒿群落组成与特征的分析,发现油蒿群落占优势的科依次为菊科、禾本科、豆科和藜科;油蒿群落物种组成的生态-生活型特征明显,如地面芽植物较多,多年生草本植物所占的比重较大,旱生植物占重要地位,沙生植物占优势等.采用TWINSPAN分类方法将油蒿群落划分为5种类型:油蒿+沙米群落,油蒿+虫实、沙米群落,油蒿+以沙生植物为主的杂类草群落,油蒿+杂类草、禾草群落,油蒿+以中生植物为主的杂类草群落.沿油蒿+沙米群落到油蒿+以中生植物为主的杂类草群落盖度逐渐增大,物种组成逐渐增加,群落分布的地貌类型从流动沙地、半固定沙地向固定沙地演变,可以认为是油蒿沙地植被的正向演替过程,即油蒿沙地植被的恢复过程.在这一过程中,群落结构渐趋复杂,群落盖度和物种多样性逐渐增加.
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| 关 键 词： | 油蒿群落 物种组成 TWINSPAN分类 毛乌素沙地 |
Species composition and quantitative classification of Artemisia ordosica community in Mu Us Sandland |
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| WANG Yan ,WU Bo ,LU Qi ,JIA Zi-yi ,LIU Guang-feng. Research Institute of Forestry,Chinese Academy of Forestry,Beijing,P. R. China, Key Laboratory for Silviculture and Conservation,State Forestry Administration,Beijing,P. R. China, College of Forestry,Northeast Forestry University,Harbin,P. R. China..Species composition and quantitative classification of Artemisia ordosica community in Mu Us Sandland[J].Journal of Beijing Forestry University,2006(Z2). |
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| Authors: | WANG Yan WU Bo LU Qi JIA Zi-yi LIU Guang-feng Research Institute of Forestry Chinese Academy of Forestry Beijing P R China Key Laboratory for Silviculture and Conservation State Forestry Administration Beijing P R China College of Forestry Northeast Forestry University Harbin P R China |
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| Institution: | WANG Yan~ 1,2 ,WU Bo~ 1,2 ,LU Qi~ 1,2,JIA Zi-yi~ 1,2 ,LIU Guang-feng~3. 1 Research Institute of Forestry,Chinese Academy of Forestry,Beijing,100091,P. R. China, 2 Key Laboratory for Silviculture and Conservation,State Forestry Administration,Beijing,100091,P. R. China, 3 College of Forestry,Northeast Forestry University,Harbin,150040,P. R. China., |
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| Abstract: | Desertification is one of the greatest environmental problems concerned by human society, which threatens the natural environment of human existence and the sustainable development of society and economy. Degradation of vegetation structure and function is one of its characteristics. Based on vegetation quantitative classification, the characteristics of vegetation were analyzed. Species composition is rich in Artemisia ordosica communities, with Asteraceae, Gramineae, Leguminosae and Chenopodiaceae as the dominant families. The characteristics of ecological types and life forms of plants in A. ordosica community are the higher proportion of hemicryptophyte and vivacious herbage, and the important role of xerophyte and psammophyte in the communities. Based on TWINSPAN classification, the A. ordosica communities were divided into five communities: A. ordosica A. pungens community, A. ordosica A. pungens and Corispermum heptapotamicum community, A. ordosica herbage layer dominated by psammophyte community, A. ordosica forbs and grasses community, A. ordosica herbage layer dominated by mesophyte community. From A. ordosica A. pungens community to A. ordosica herbage layer dominated by mesophyte community is the different succession steps of A. ordosica sandyland. In this process, vegetation structure is tending to be more complicated, the diversity and coverage of communities are increasing gradually. |
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| Keywords: | Artemisia ordosica community species composition TWINSPAN classification Mu Us Sandland |
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