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The Progressive and Regressive Succession of the Sabina Vnigaris Community in the LoessPlateau of Northern Shaanxi Province

Zhu Zhicheng;Guo Ailian;Yue Ming(Department of Biology, Northwest University,710069,Xi'an).  
The progressive succession of the Sabina Vulgaris community begins on mobile substrate(mobile sand),it stops on the fixed substrate,the essence is developing physical and chemical proper ty and moisture of the substrate under the influence of Sabina vulgaris community, it is favourable forlife of the plant.In the stage of regressive succession the influence of the Sabina vulgaris communityis little on the substrate, edaphic humidity lessen, xerophytio micro-organism play a decisive role inplant community.The fundamental driving force of.the succession is generated from an edaphologicalendodynamic force under the reaction of plant communities in all process.
【Fund】: 国家自然科学基金
【CateGory Index】: S791.41
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