本文试用空间差异代替时间变化的方法,分析了贵阳喀斯特山地云贵鹅耳枥种群的动态特征。
In this paper, the dynamics of pubescent hornbeam populations in karst mountain of Guiyang are analysed by using the method of substitution of space for time.
灵敏度分析显示,温度是影响褐飞虱种群数量动态的最关键因素,其次为初始迁入虫量、天敌和水稻生育期。
The sensitivity analysis showed that the temperature was the most important factor, the other key factors included initial population size, natural enemy and rice development stage.
对舞毒蛾卵块的种群动态与温度、湿度等气象因子相关分析。找出了相关系数较大的因子。
Through the relationship analysis between the egg block population and the meteorological factors such as temperature and relative humidity, the good correlation factors are found.
组建地理信息系统数据库是进行种群时空动态分析的前提和基础。
It is the precondition and foundation to build GIS database for analysis of population spatiotemporal dynamics.
文章对该种的发现及意义进行阐述,对种群动态、栖息地环境现状进行分析,提出相应的保护策略。
The paper is to illustrate the significance of Ranodon sibiricus rediscovery and to analyse the development of its species and its habitat environment, providing corresponding protective tactics.
对武夷山自然保护区南方铁杉种群动态进行了系统研究,绘制该种群的年龄结构,编制静态生命表,分析存活曲线、死亡率曲线和损失度曲线。
The population dynamic of Tsuga tchekiangensis in Wuyishan Nature Reserve was studied and its age structure, the life table, survival curve, mortality rate and killing power curve were analyzed.
分析了白皮松的群落学特征、径级结构及其密度变化规律;绘制了存活曲线和死亡曲线,从多角度研究了白皮松幼林种群的动态变化规律。
The community feature, size-class structure, the regulation of changing density were analyzed and the survival curve, the death curve and the life table were worked out.
重要因子分析与关键因子分析相结合,有助于明确对种群动态产生实际作用控制因子及其作用强度。
It is very important for the dynamics of the insect with long longenity to analyse the important factors and key factors.
灵敏度分析显示,温度是影响褐飞虱种群数量动态的最关键因素,其次为初始迁入虫量、天敌和水稻生育期。
The sensitivity analysis showed that the temperature was the most important factor, the other key factors included initial population size, natural enemy and rice development stage. Post variation...
在提出的模型中,算法PBIL的结果及分析充分显示了模型在资源管理中的适用性,以及基于种群的优化技术在动态价格中的应用能力。
Promising results and analysis are obtained from PBIL confirming its suitability for resource management in the proposed model and applicability of popul…
在提出的模型中,算法PBIL的结果及分析充分显示了模型在资源管理中的适用性,以及基于种群的优化技术在动态价格中的应用能力。
Promising results and analysis are obtained from PBIL confirming its suitability for resource management in the proposed model and applicability of popul…
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