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《Scientia Geographica Sinica》 2018-06
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Small Scale Vegetation Differentiation Structure in Danxia Landforms, Southeast China

Peng Hua;Liu Pan;Zhang Guihua;School of Geography and Planning, Sun Yat-sen University;  
The widely existing cliffs is the basic morphological feature of Danxia landform. The typical Danxia landform are usually surrounded by steep cliffs, and due to the surrounded cliffs ravines are formed between mountain blocks. Special landforms have created many special habitats and special vegetation differentiation.In this paper, by reviewing previous studies on the ecological and vegetation diversity of Danxia landform, we found that the differences of small scale vegetation in Danxia landform area was not given enough attentions.To this end, this article makes a preliminary discussion on the most individualized natural differentiation and essence of the small scale vegetation differentiation in Danxia landform area, and the main conclusions are as follows: the small scale natural ecology differentiation of the Danxia landform area is not in conformity with the general sense of natural law, with its basic reason of differentiation habitat differences are caused by its special landscape; The peak effect and ravine effect of Danxia landform area are essentially the "dry island" effect and "hot island + wet island" effect, respectively; An ecological structure "mutated belt" is formed on the edge of the isolated mountaintop, which makes the mountain top an isolated "circular ecological ring". The vegetation differentiation of Danxia landform was caused by the habitat differences caused by geomorphic differences. It is expected to provide knowledge for the study of mountain science, small scale natural differentiation and environmental change.
【Fund】: 国家自然科学基金项目(41771008);; 国家科技基础性工作专项重点项目(2013FY111900)资助~~
【CateGory Index】: Q948
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