quercus aliena 中文意思是什麼
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A new rot disease of quercus aliena var. acuteserrata in qinling
秦嶺銳齒櫟一種新腐朽病害的發現 -
( 2 ) the dominance tree is evidence in the quercus aliena var
群落密度與海拔高度之間關系不是很明顯。 -
Response of soil respiration to soil temperature and moisture regimes in the natural forest of quercus aliena var. acuteserrata
銳齒櫟林土壤呼吸對土壤水熱變化的響應 -
Turnover process and energy change of fine roots of pinus tabulaeformis and quercus aliena var. acuteserrata natural forests in qinling mountains
銳齒櫟林細根周轉過程與能態變化 -
The paper studies the biodiversity characteristics, the relationship of the biodiversity and ecological process of quercus aliena var
物種多樣性與群落密度之間呈「 m 」型關系。 -
Acutesrata community. i get the conclusion through plenty of field survey and data analysis. ( 1 ). the pca analysis shows that the quercus aliena var
（ 2 ）相關分析表明：海拔、坡向、發育階段、生物量等是影響研究區物種多樣性分佈格局的主要因子。 -
The density with the biodiversity increasing shows " m " model. ( 3 ) the correlation analysis shows : elevation, slope, development stage and biomass are main factors which affect the biodiversity pattern in the research region. the biodiversity of the quercus aliena var. acutesrata community shows the patterns with the elevation and slope affecting : on sunny slope, the species diversity increases with the elevation increasing below the attitude of 1640m and its climax is at this attitude ( the diversity index h = 1. 68 ), upward this point, the diversity index descends slowly. the evenness shows ascend trend with the elevation upward, its climax point at 1800m ( the evenness index jsw = 0. 78 ), then descending after this point
（ 5 ）通過分析，銳齒棟群落生物量與生物多樣性呈現如下關系:在海拔1500一170枷范圍內，銳齒棟群落生物量與物種多樣性之間呈單峰曲線關系;在海拔1700一1900m范圍內，生物量與物種多樣性之間呈不明顯的波動關系;在海拔1900一2100m范圍內，生物量隨物種多樣性的增加而增大，通過對不同高程內生物量與物種多樣性分析發現，隨著海拔的上升，最大生物量對應的物種多樣性略有增加趨勢;在相同海拔和坡向條件下，生物量與物種多樣性之間也呈典型的單峰曲線關系;群落凈生產力與物種多樣性之間總體上也呈單峰曲線關系。
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