以往的遗传负荷理论从种群平衡出发，探讨现实发生水平上的物种进化。
The past theory on genetic load starts off with equilibrium of population to investigate the evolution of species on realistic level.
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.
这种群体内部的偏侧性不平衡对个体也有好处。
This imbalance of lateralization within populations may also have advantages for individuals.
抗菌素的使用扰乱了微生物种群的平衡，致使耐药生物增多，感染模式发生变化。
Antimicrobial use disrupts the balance of microbial populations, leading to a rise in resistant organisms and changes in patterns of infections.
自1990年代起，科学家和区域性管理机构就已经开始了数据收集工作，通过对“食物链等级”上不同种群间的生态平衡变化进行定量研究。
Since the late 1990s, scientists and regional management organisations have used catch data to measure changes in the balance of species across so-called "trophic levels."
群体遗传学分析结果表明，取样种群由于杂合子不足造成种群偏离哈迪·温伯格平衡。
The analysis results by GENEPOP software showed that the hypothesis of Hardy Weinberg equilibrium was rejected.
一方面在新的粒子种群产生过程中引入扰动变量，使粒子群在遵守秩序和随机行为之间达到平衡；
On the one hand, through leading perturbation variables into the generation process of particle population, a balance is reached between the order and random behaviors.
而增加对害虫天敌的种类或数量，来打破自然界的相对平衡，使之不利于害虫种群的增长，从而减少和防止它们的为害。
We can break the balance of nature by increasing the category and quantity of pests' natural enemy so as to limit their growth and thus prevent the harm.
由于种内互助作用的存在及食植者采食速率、食植者密度等因子的影响，牧草植物种群存在多个稳定平衡点。
There are multiplicity of stable states in herbage populations owing to the influences of intraspecific mutualism, feeding rate and density of herbivores.
养殖过程中使用杀菌消毒剂后，隔1 - 2天使用本产品，补充有益微生物种群，调节水体有益菌相和藻相的平衡。
After sterilizing with disinfectant for 1-2 days, using this product can add beneficial microorganisms populations, regulate the balance of bacteria and algae in water body.
最后得出当种群初始规模不同时，系统会达到不同的平衡位置。
At last, we find that the system may have different equilibrium state when the initial scale is different.
讨论了生产者服从草再生模型的三种群食物链系统平衡点的稳定性问题。
The stability of a three species food chain system is discussed, in which the growth of producer is subject to the linear initial regrowth model.
研究了两种群在偏害共生作用下的数学模型，分析了系统各平衡点的稳定性。
This paper deals with the mathematics model of two populations amensalism symbiosis and the stability of all equilibrium points in the system.
本文研究两种群动力学方程平衡点的稳定性。
In this paper we study the stability for equilibrium points of equations in two-population dynamics.
本文研究了具有非线性接触率和易感类中具有种群动力学的SIS传染病模型的正不变集、平衡位置以及平衡位置的稳定性。
In this paper, we have studied a SIS epidemiological model with a nonlinear incidence rate and population dynamics in susceptible class.
利用波文比能量平衡法对额济纳绿洲柽柳种群蒸散进行测定。
This article makes use of the Bowen Ratio-equilibrium Energy Method to measure evapotranspiration of Tamarix ramosissima in Ejina oasis.
构造了一个具有阶段结构的捕食—食饵模型，并研究了庇护所效应对于该系统平衡点的稳定性、平衡密度及其种群长期续存的影响。
This paper studied the effect of prey refuges on the stage-structured predator-prey model with two life stages-immature and mature, and with a mature prey using refuges.
研究了两种群在偏利共生作用下的数学模型，分析了系统各平衡点的稳定性。
This paper deals with the mathematics model of two populations commensalisms symbiosis and the stability of all equilibrium points in the system.
讨论了一类带有扩散和具有阶段结构与时滞的两种群捕食系统，分析了该系统的非负不变性、边界平衡点性质及全局渐近稳定性。
A system of retarted functional differential equations as a predator-prey model with stage structure and dispersion is discussed. Conditions for global stability of the system are given.
集合种群通过局部灭绝和重新侵占空斑块之间的动态平衡而续存下去。
Metapopulation can exist by the dynamical balances of the extinction of populations and the recolonization of empty patches.
集合种群通过局部灭绝和重新侵占空斑块之间的动态平衡而续存下去。
Metapopulation can exist by the dynamical balances of the extinction of populations and the recolonization of empty patches.
应用推荐