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AUTHORS: Weichi Li, School of Life Sciences, Peking University, Beijing; Xiaoli Shen, State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing; Chunping Luo, Wanglang National Nature Reserve, Pingwu, Sichuan; Sheng Li, School of Life Sciences, Peking University, Beijing
ABSTRACT: During the past two decades, there are dramatically increases of domestic herbivore animals (i.e., livestock) that are freely dwelling in and around many nature reserves, which has become a major threat to protected area management. The free-ranging livestock may Trample seedlings, remove understory vegetation, alter forest structure, introduce invasive species, compete with wild ungulates, degrade soil, etc. Meanwhile they may promote the habitat loss and degradation, increase the possibility of the spread of infectious diseases and the human-wildlife conflict. The niche complementarity theory is one of coexistence mechanisms to determine how biodiversity dynamics, and abiotic factors interact. As Hutchinson’s “n-dimensional hypervolumes” concept, ecologist use overlap and differentiation in niche axes to understand differences in resource partitioning among distinct species coexistence and avoid competitive exclusion. . In our research we try to use the niche complementarity to Analysis and Evaluation the competition and coexistence based on the field survey conducted at the Wanglang Subalpine Conifer Forest Dynamics Plot.
