種群階梯 的英文怎麼說

中文拼音 [zhǒngqúnjiē]
種群階梯 英文
population gradation
  • : 種名詞(姓氏) a surname
  • : Ⅰ名詞(聚在一起的人或物) crowd; group Ⅱ量詞(用於成群的人或物) group; herd; flock
  • : 名詞1. (臺階) steps; stairs 2. (等級) rank 3. [醫學] (耳蝸的三個螺旋管的任一個) scala 4. [數學] order 5. [地質學] stage
  • : Ⅰ名詞1 (梯子; 樓梯) ladder; stairs; steps; staircase 2 (姓氏) a surname Ⅱ形容詞(形狀像樓梯的...
  • 階梯 : (臺階和梯子, 比喻向上的憑借和途徑) a flight of stairs; ladder; staircase; step
  1. The growth dynamics of tree basal area of form. taxus chinensis var. mairei population in different altitude were discussed using the liu - logistic model, and the results showed that the altutide of 790 meters is more suitable to the survive of form. toms chinensis var. mairei population than 990 meters. plot sampling was selected and dynamic analysis was used to study the height structure of taxus chinensis var. mairei population, and the quadrate picture of height structure and the curve of survival rate were drew

    運用改進模型對南方紅豆杉在不同海拔度的優勢度增長進行了探討,表明海拔790m處的南方紅豆杉具有較大的環境容納量,但增長速度不快,海拔990m處的南方紅豆杉環境容納量不高,但具有較大的增長速度,這可能與落的發育段不同有關,兩地海拔均為南方紅豆杉適宜的生長海拔高度,相比而言,海拔790m的珍稀瀕危植物南方紅豆杉數量特徵的研究高度更宜於南方紅豆杉的生長。
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