species composition

常见例句

These shifts in species composition may be benign, or they may result in a cascade of negative consequences throughout the marine food web.
这些物种组成的转变可能是良性的，也有可能导致整个海洋食物网的一系列消极后果。
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.
用物种多样性指数、丰富度指数、均匀度指数和优势度指数，对边际带物种组成的特征进行分析；
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，应重视通过调整物种组成，增加阔叶树种比例以增强森林的自肥能力。