甘肃升sushengGan是卡奈尔大学的分子生物学家，说改组使用的变异物种只稍微推迟了树叶的衰老表象，这不是很理想的模型。
And Susheng Gan, a molecular biologist at Cornell University, says the mutant type used by the group shows only slightly delayed leaf senescence, making it a less-than-ideal model to work with.
认为物种多度模型是良好的生境变化生物指示困子。
We found the species-abundance model is a good indicator as monitor of habitat change.
建立了生物种群在污染环境中的一个线性生灭过程模型。
We establish a linear birth and death process model of a population in polluted environment.
以往关于生物种群增长的数学模型多是用微分方程和概率极限定理的方法来推导的。
Differential equation and probability limit theorem have been widely used in the mathematical model of biological population growth.
预防生物入侵的一个重要手段是对外来物种进行风险评估，应用模型则是定量评估的必备方法。
It is widely acknowledged that risk assessment has become an indispensable part of controlling of biological invasion.
在构建模型之前， 需要充分了解入侵物种的生物学特性、种群平衡状态、本土地理分布范围及物种的生物历史地理等方面的知识。
We conclude that the knowledge of the biology, population equilibrium state, geographic distribution, and biogeographic history of the invasive species is crucial prior to niche modeling.
在构建模型之前， 需要充分了解入侵物种的生物学特性、种群平衡状态、本土地理分布范围及物种的生物历史地理等方面的知识。
We conclude that the knowledge of the biology, population equilibrium state, geographic distribution, and biogeographic history of the invasive species is crucial prior to niche modeling.
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