agestructure相关论文
Background:Volcanic eruptions have large effects on forest ecosystems and create new substrates,triggering primary succe......
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Natural Regeneration of Haloxylon Ammodendron Seedlings Could Benefit from a Withered Herbaceous Lay
The age classes of regenerated seedlings were investigated and the differences between the different microhabitats in th......
Variation in age structure and body size benefits are identified to understand the evolution of life history.Here,we est......
研究带有年龄结构的捕食者-食饵模型的渐近行为.本文所研究的模型假定捕食者从幼年阶段到成年阶段的转变率依赖于幼年种群的密度,......
Identifying the life-history strategies of fish and their associations with the surrounding environment is the basic fou......
对一类非线性种群模型,以生育率为控制变量,研究最小代价一规模问题和最小代价一偏差问题.证明了最优控制的存在唯一性,给出了一阶......
2000～2001年采用定点观察法、痕迹鉴定法和访问法,调查了金华南部山区野生猕猴资源状况.金华、遂昌、武义3县交界处野生猕猴数量约5......
介绍了单种群按年龄结构分布的莱斯利模型，并用于佛坪自然保护区的大熊猫种群的动态研究，预测其发展趋势，为保护大熊猫及其生存环境提......
通过绝对数量调查表明，在位于小凉山山系的马边大风顶大熊猫野外观察站约２０ｋｍ＾２的研究区域里，共有９只大熊猫，其中幼少组４只，青壮组２只，中年组２只和......
