breadth factor 中文意思是什麼
breadth factor
解釋
寬度因數-
The pca results indicated that the characteristics of length, breadth, the angle of leaf basal in lamina and the characteristics of calyx - tube, corolla dimension and inflorescence pedicel in the flower were the main reasons leading to the morphological variations, and the f - test of single factor variance analysis verified the conclusion
主成分分析顯示，葉部特徵的長度、寬度、葉基夾角等，以及花部特徵的花獸筒、花冠幅、花序總梗等是造成不同居群野生早櫻表型差異的主要因素，單因素方差分析也印證了這一結論。 -
Niche breadth of four dominate populations at three age groups was studied by the methods of resource utilization ability and ratio. the result shows that : symplocos sectchuanensis is a typical gengeration species whi ch resource utilization ability is strong, and distribution is wide. meanwhile, go rdonia acuminata, castanopsis fargesis and pinus massoniana specialized at some d egree in resource utilizationm, their distribution is limited. especially, the ju venile of pinus massoniana specialized outstandingly. with the devlopment of pinu s massoniana, which is the pioneer population in mt. jinyun, the environment become s unfit to it ' s juvenile. it turns to needle and evergreen broad - leaves mixed fo r est. because the tolerance toward shading of gordonia acuminata is lower than tha t of castanopsis fargesis, gordonia acuminata will be substituted by castanopsis fargesis and other evergreen broad - leaves species are the edificators. the popul ation ' s ability of resource utilization is the inner factor of population distri bution and community succession. the distribution of light and the concentrate of nutrient ( such as n ) is the outer factors of community succession
對縉雲山森林植被的4個優勢種群3個年齡級生態位寬度進行了研究.結果表明，川灰木利用資源的能力最強、分佈廣，為典型的泛化種.大頭茶、栲樹、馬尾松對資源的利用在一定程度上特化，分佈上有一定的局限性.馬尾松的中齡組與幼齡組特化現象十分顯著.縉雲山森林植被的先鋒種馬尾松的發展，導致環境的改變不適于其幼齡個體的生長，群落演替到針闊葉混交林階段，最後發展為以栲樹等為建群種的常綠闊葉林.種群的資源利用能力，是種群分佈與群落演替的內在原因，光因子和營養元素（如n ）是群落演替的主要外部動力 -
Through the analysis on the relationship and variable tendency between the present population situation, main index of economic development and the amount of water consumption, the quota of water consumption, meanwhile, synthetically considering about the variation of influential factor such as water resources condition in future, economic and social development, science and technical progress, the efficiency of water consumption and the level of water conservation, etc, the relationship between the above - mentioned synthetical influential factors and the index of water demand amount is established and the variation of growth rate of water demand in future and the variation breadth of other indices such as water consumption per capita and water consumption unit value of output are confirmed
摘要通過對現狀人口、主要經濟發展指標與用水量、用水定額的關系及其變化趨勢的分析，在綜合考慮未來水資源條件、社會經濟發展、科技進步以及用水效率、節水水平等影響因素變動條件下，建立綜合影響因素與需水量指標的關系，確定未來需水量增長率的變化及人均用水量、單位產值用水量等指標的變動幅度。
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