种群参数

三种果树叶螨实验种群参数的分析

Analysis on the experimental population parameters of three species of fruit tree spider mites

白纹伊蚊抗高效氯氰菊酯和抗敌百虫品系的生物学特性及种群参数

The population parameters and biological characteristics of high effective cypermethrin resistance and trichlorphon resistance strains of Aedes albopictus

研究了温度对斜纹夜蛾的发育、存活、生殖、种群参数和种群趋势指数的影响。

Effect of temperature on development , survival , reproduction , population parameter and population trend index of Spodoptera litura ( Fabricius ) were studied .

马尾松毛虫取食被害松针后，体内的2种解毒酶（过氧化氢酶、羧酸酯酶）活性增加，其种群参数表现出发育历期延长、体重减轻、死亡率增加、生殖力下降的变化。

Slower development , lighter weight , less fecundity , high mortality and higher activity of detoxification enzymes ( peroxidase and carboxylesterase activity ) were found in pine caterpillar population as fed on damaged pine needles .

在1995年10月至1996年11月，依据有关种群参数估算了保安湖1试验围拦中麦穗鱼的生产力。

Production by P. parva from the 1 # experimental enclosure of the Bao-an Lake , Hubei province , was estimated during the period of from October 1995 to November 1996 . Monthly instantaneous growth rate changed with both age and season .

具有捕获率与Allee影响的种群分布参数系统的最优控制的存在性

The existence of optimal control on the population distributed-parameter system with harvesting rate and Allee effect

温度对二斑叶螨生长发育及种群动态参数的影响

Influence of Temperature on Development and Population Dynamics of Tetranychus urticae Koch

种群模型参数辨识的一种方法

A method of identifying parameters of population model

不同纬度来源的野生大豆拟种群动态参数及其生态适应意义

Parameters of metapopulation dynamics of wild soybean originated from different latitudes and their significance of ecological adaptation

研究表明：不同生境的栓皮栎种群性状参数分化差异明显。

The study showed that the Quercus variabilis communities in different habitats significantly differentiated in their trait parameters .

宁夏山楂叶螨实验种群生命参数与数学模型的研究

A Study on Vital Parameters and Mathematical Model of Test Population of Leaf Spider Mite on May Trees in Ningxia

不同放牧制度优势种群特征参数7、8月差异基本最大，其中高度差异不显著，而盖度差异显著。划区轮牧提高了适口性好和适口性中植物重要值及羊草种群比例；

The characteristic parameters of dominant species population under different grazing systems appeared the great difference on July and August , the height had no difference , and the coverage showed the greatest variant .

Logistic种群增长模型参数的生态学意义及其辨识&南湾野生猕猴种群的应用

The Ecological Meaning and It 's Identification of the Logistic Population Growth Model ── A case study of rhesus monkey population in Nanwan , Hainan

杀虫剂亚致死剂量诱导的褐飞虱种群生命表参数及低温对生长发育、生殖的影响

Insecticides-induced Life Table Parameters of Nilaparvata Lugens Populations and Effects of Low Temperatures on Development and Fecundity of N.lugens

一种自适应的种群增长模型及参数估计

A self-adaptive model of population growth and its parameter estimation

建立天敌胁迫下食饵种群动态模型的参数估计方法。

The paper gave the way to estimate parameter of the prey population dynamical model under natural enemy .

从实验种群生命表的参数分析毛竹害螨暴发成灾的成因

Studies on Parameters Experiment Population Life table to Analyze Factors Causing Outbreaks of Pest Mites in Moso bamboo Forests

成虫期长于幼期的昆虫实验种群生殖力表参数估计模型的改进

Improvement upon the parameter estimation models of the fecundity table of insect experimental population when adult period longer than that of larva

基于优化设计思想提出应用均匀设计方法同时确定遗传算法的初始种群及其他操作参数的方法。

Based on optimization design theory , a method is proposed to establish initial population and operational parameters simultaneously by uniform design .

同时格氏栲种群直径β分布参数与林分平均胸径等特征因子存在显著关系。

The relationship of parameters of diameter Beta distribution in C kawakamii population with average D B H in natural forests is remarkable .

为获得运行过程中对搜索空间勘探和开采的平衡，该文提出了一种基于种群熵估计的参数自适应遗传算法。

This paper presents a parameter adaptive genetic algorithm based on the entropy estimating to balance exploration and exploitation in the problem 's solution space while doing optimization .

在捕食和附加食物交互作用条件下，测定根田鼠种群攻击水平与种群参数之间的关系，应用对策论分析攻击行为的模式。

The demographic implications and strategy of aggressive behavior of root voles under different food , predation treatments were analyzed by using statistical methods and game theory models .

依据对棉铃虫自然种群生命表研究所获得的种群统计参数，采用蒙特卡罗方法，模拟了随机环境条件下的棉铃虫种群发生动态。

Based on the demographic parameters of life table of the cotton bollworm , Helicoverpa armigera ( H ü bner ), its population dynamics was simulated using Markov chain Monte Carlo method .

协同进化算法由两类种群组成：规则前件种群和隶属函数参数种群；

The cooperative co-evolutionary algorithm owns two species including the fuzzy rule premise species and the parameters species .

考虑到进化过程中群体多样性损失过快，采用种群分布熵和平均粒距两个种群多样性参数，来均衡算法的勘探和开发能力。

Considering the large lost in population diversity during the evolution , two parameters of population-distribution-entropy and average-distance-amongst-points were introduced into the proposed algorithm to balance the trade-off between exploration and exploitation .

单种群动力学模型是最基本的种群动力学模型，它研究自然界中单一种群的生长特性，一般是将各种环境因素的影响都归结到单种群模型的参数中，使问题得以简化。

One single species dynamic models are the most important population dynamic models . They study the growth dynamics of a single species by assuming different parameters to represent the effects of the environment .