popul中文什么意思
例句与用法
- Fu ? ball ist der popul ? rste sport deutschlands
足球是德国人最喜爱的体育项目。 - Construction of molecular linkage map in grape using rapd markers and f1 popul ation of interspecific cross
标记和种间杂交组合构建葡萄的分子标记连锁图谱 - The investigation and study for the structure of sports population in mo rning or evening in xian city , the need of the palaestra and other sports place for people , the lengthen and the master of spare time for the resident in xian city , the proportion of sports population in xian city , the focus of sports popul ation for the item of sports , the influence factors of the increase in sports po pulation are made by author , these results will contribute to the development of the sports for all movement in healthy and orderly way in xian city
针对晨、晚练人群的队伍结构组成、晨、晚练人群对体育活动场所的要求，西安市居民闲暇时间的多少和支配，西安市体育人口的比重，体育人口对体育活动项目的选择，以及影响体育人口增长的因素等进行调查研究，旨在全面推动西安市全民健身活动健康有序的发展。 - Niche breadth of four dominate populations at three age groups was studied by the methods of resource utilization ability and ratio . the result shows that : symplocos sectchuanensis is a typical gengeration species whi ch resource utilization ability is strong , and distribution is wide . meanwhile , go rdonia acuminata , castanopsis fargesis and pinus massoniana specialized at some d egree in resource utilizationm , their distribution is limited . especially , the ju venile of pinus massoniana specialized outstandingly . with the devlopment of pinu s massoniana , which is the pioneer population in mt . jinyun , the environment become s unfit to it ' s juvenile . it turns to needle and evergreen broad - leaves mixed fo r est . because the tolerance toward shading of gordonia acuminata is lower than tha t of castanopsis fargesis , gordonia acuminata will be substituted by castanopsis fargesis and other evergreen broad - leaves species are the edificators . the popul ation ' s ability of resource utilization is the inner factor of population distri bution and community succession . the distribution of light and the concentrate of nutrient ( such as n ) is the outer factors of community succession
对缙云山森林植被的4个优势种群3个年龄级生态位宽度进行了研究.结果表明，川灰木利用资源的能力最强、分布广，为典型的泛化种.大头茶、栲树、马尾松对资源的利用在一定程度上特化，分布上有一定的局限性.马尾松的中龄组与幼龄组特化现象十分显著.缙云山森林植被的先锋种马尾松的发展，导致环境的改变不适于其幼龄个体的生长，群落演替到针阔叶混交林阶段，最后发展为以栲树等为建群种的常绿阔叶林.种群的资源利用能力，是种群分布与群落演替的内在原因，光因子和营养元素(如n )是群落演替的主要外部动力
