常見例句雙語例句These shifts in species composition may be benign, or they may result in a cascade of negative consequences throughout the marine food web.這些物種組成的轉變可能是良性的，也有可能導致整個海洋食物網的一系列消極后果。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.用物種多樣性指數(shù)、豐富度指數(shù)、均勻度指數(shù)和優(yōu)勢度指數(shù)，對邊際帶物種組成的特征進行分析；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，應重視通過調整物種組成，增加闊葉樹種比例以增強森林的自肥能力。 返回 species composition