species composition

常見例句

These shifts in species composition may be benign, or they may result in a cascade of negative consequences throughout the marine food web.
這些物種組成的轉(zhuǎn)變可能是良性的，也有可能導(dǎo)致整個(gè)海洋食物網(wǎng)的一系列消極後果。
The characteristics of the species composition in the forest boundary were analyzed by species diversity index, species richness index, species evenness index and species dominance index.
用物種多樣性指數(shù)、豐富度指數(shù)、均勻度指數(shù)和優(yōu)勢(shì)度指數(shù)，對(duì)邊際帶物種組成的特征進(jìn)行分析；
Therefore , it should be emphasized to enhance the self - fertilization capability of forest by adjusting the species composition and increasing the proportion of native broad - leaved species.
因此，應(yīng)重眡通過調(diào)整物種組成，增加濶葉樹種比例以增強(qiáng)森林的自肥能力。