dominant tree 中文意思是什麼
dominant tree
解釋
優勢木-
Research on tissue culture of chinese white poplar dominant tree
毛白楊優株的組織培養 -
Where forests are concerned, the difficulty is increased by the longevity and competitive capacity of dominant tree species.
只要哪裡涉及森林，就由於優勢樹種的長命和競爭力而增加困難。 -
The results show that the insect community in apricot tree stand have 6 orders, 25 families and 55 species, the dominant species concentrate on the group of scale insect, aphids, budworms and common lackey moth, gypsy moth
結果表明，杏樹林害蟲群落共有6目25科55種，優勢種集中於蚧蟲、蚜蟲、卷葉蛾等類群及天幕毛蟲、舞毒蛾等。 -
The species richness and diversity index order of coniferous and broad - leaf forest and evergreen broad - leaf forest in different geology plots was as follows : shrub layer > herb layer > tree layer ; in shrub plots, the order was herb layer > shrub layer. in general jsw, jsi and ea index order was herb layer > shrub layer > ree layer. that indicated that the species of tree and shrub in karst area distributing is not even, and the species, which are dominant and adapt to the karst environment are cleaer
不同地區樣地針闊混交林和常綠闊葉林物種豐富度指數、多樣性指數均表現為灌木層草本層喬木層，而在灌叢樣地，物種豐富度和多樣性指數表現為草本層灌木層；整體上，石灰巖地區樣地jsw 、 jsi和ea指數為草本層灌木層喬木層；砂頁巖地區樣地為灌木層草本層喬木層。 -
X2 test with 2 2 contingency table and ochiai indices were used to analyze the interspecific association of 12 dominant species of meadow community and 20 dominant species of scrub community and 18 dominant species of tree community. pearson ' s correlation coefficient and spearman ' s rank correlation coefficient were also applied to calculate correlations between species
在該地區植被的優勢種的種間關系的研究方面，運用2 2列聯表、 x ~ 2檢驗方法對群落優勢種進行總體相關性和種對間的聯結性檢驗，利用共同出現百分率jaccord指數測定種對間的關聯度，應用pearson相關系數和spearman秩相關系數刻畫種對間的數量變化關系。 -
The study also indicated that all the tree species but keteleeria evelyniana appearing to have an aggregate distribution had a random distribution in the canopy layers and all the dominant species had a aggregate distribution in the renewal layers
研究還表明，在林冠層中，除了滇油杉在山坡上部為聚集分佈外，其他樹種的分佈格局均呈隨機分佈；在更新層中，優勢種類均為聚集分佈。 -
Not surprisingly, one study found that growth of sitka spruce, the dominant streamside tree in the area, was three times greater along salmon streams than along nonsalmon streams
另一項研究則發現，該地區的優勢溪岸樹種美國西川雲杉，在有鮭魚溪流的地方，長得比沒有鮭魚溪流的地方還大三倍。 -
There were 83 species in the community 4 ( castanopsis sclerophylla - camellia oleifera - maesa japonica community ), and castanopsis sclerophylla, castanopsis fargesii and schima superba were the dominant species of tree layer, and camellia oleifera, itea chinensis and symplocos sumuntia were the dominant species of succession layer, and maesa japonica was the absolute dominant species of regeneration layer. there were 76 species in the community 5 ( castano
用物種重要值代替物種多度來測定物種多樣性，結果表明: margalef豐富度指數隨著群落層次的物種數增加而增加，與群落各層次的個體數無關，各群落的喬木層的simpson多樣性、 shannon一wiener多樣性、 simpson均勻度、 shannon一wiener均勻度4個指數一般小於其演替層的相應指數，演替層與更新層的相應指數之間無必然大小關系。 -
There were 88 species in the community l ( castanopsisfargesii - symplocossumuntia - acidosasa longiligula community ), and castanopsis fargesii, castanopsis carlesii and schima superba were the dominant species of tree layer, and symplocos sumuntia and acidosasa longiligula were respectively the dominant species of succession layer and regeneration layer
各群落中有許多層間植物黃茵嶺生態保護小區常綠闊葉林生態特徵研究?藤本，主要有網脈酸藤子、香花崖豆藤、菠葵等。 -
There were 71 species in the community 2 ( castanopsis fargesii - itea chlnensis - maesa japonica community ), and castanopsis fargesii and itea chinensis were respectively the absolute dominant species of tree layer and succession layer, maesa japonica was the dominant species of regeneration layer
群落次生天然演替過程是以地帶性植被殼斗科、茶科、冬青科等物種為主。總體上黃茵嶺生態保護小區群落種子植物屬的分佈類型是以熱帶分佈成分佔絕對優勢，種子植物以熱帶起源為主。 -
There were 66 species in the community 3 ( castanopsis fargesii + schima superba - itea chinensis - maesa japonica community ), and castanopsis fargesii and schima superba were the dominant species of tree layer, and itea chinensis and symplocos sumuntia were the dominant species of succession layer, and maesa japonica and ardisia japonica was the dominant species of regeneration layer
採用物種數、 m雌alef豐富度指數、 simpson和shannon一wiener多樣性指數、 simpson和shannon一wiener均勻度指數對黃茵嶺生態保護小區森林群落多樣性進行測定，結果表明該地區有較高的物種多樣性。 -
Discussion on applying fault tree analysis method to determine dominant factors of gas outburstin coal mine
用事故樹分析法確定煤礦瓦斯突出的主導因素探討
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