niche dimension 中文意思是什麼
niche dimension
解釋
生態席位幅度-
Form. taxus chinensis var. mairei is protecting plant in the first class, which is a precious and endangering plant in china in this paper, the quantitative characterics of form. taxus chinensis vsr. mairei population including age structure, spatial distribution pattern, growth dynamics of tree basal area, niche characterics, fractal dimension and competition between specises were studied using methods of mathematics ecology from the angle of population ecology of form. taxus chinensis var. mairei, then the prent state and the endangering causes were analysed. this research offers gist to protecting and enlarging the crude resourse of form. taxus chinensis vsr. mairei population, afforesting plantation and sustainable utilize for us
本文從南方紅豆杉種群生態學的角度、主要應用數學生態學的方法探討南方紅豆杉種群的數量特徵，包括南方紅豆杉種群年齡結構、種群空間格局（探討分佈格局動態規律與生境相互關系） 、不同立地條件下種群優勢度增長趨勢、生態位寬度、生態位相似比例、生態位重疊、空間占據能力及種間競爭等，分析其目前現狀及瀕危原因，期望為南方紅豆杉野生資源的保護和擴大、營造人工林及可持續利用提供理論基礎，也為瀕危植物種群生態學的研究提供參考。 -
68 quadrats were divided into 8 types of communities by twinspan, which can be treated as one - dimension resource states. the niche breadths and overlaps of main dominant species were measured using a series of indices proposed by levins, shannon - wiener and petraitis
在該地區植被的優勢種生態位的研究方面，仍然運用twinspan把樣方分為8個群落類型，用levins 、 shannon - wiener生態位寬度公式和petraitis生態位特定重疊指數公式測定群落中主要種群生態位寬度和生態位重疊，並分析各種群生態位的生態學意義。
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