种群年龄结构,Population age structure
1)Population age structure种群年龄结构
1.Based on the analysis, of size classes, survival curves, height classes and distribution pattern, this paper discussed the structure and distribution pattern of Pinus massoniana Lamb in Wuhan Maan mountain forest park which revealed the population age structure belonged to mid senescent type.结果表明 :马尾松种群年龄结构属于中衰型 ;种群个体在空间配置上多居于乔木层 ,灌草丛中有少量分布 ;同时 ,马尾松种群呈集群分布格局 ,这可能与马尾松的生物学特性有关 ;但在不同发育阶段 ,种群分布格局不同 ,随种群年龄的增加和径级的增大 ,分布格局由集群分布变为随机分布 ,这主要由种内和种间竞争引起的种群数量动态变化所
英文短句/例句
1.Study on Otoliths Microstructure of Tanichthys Albonubes and Research on Age Structure of Wild Tanichthys Albonubes;唐鱼耳石微结构研究及自然种群年龄结构调查
2.Study on Population Age Structure and Spatial Distribution Pattern of Dryopteris Crassirhizoma Nakai;粗茎鳞毛蕨种群年龄结构与空间分布格局研究
3.Age-structure and reproduction investigation on Niviventer confucianus living on islands at Qiandao Lake in autumn千岛湖秋季社鼠种群年龄结构及繁殖状况初探
4.Study on the Age Structure of Ulmus pumila L.var.Sabulosa Population in Hunshandake Sand Land浑善达克沙地沙地榆种群年龄结构研究
5.A PRELIMINARY STUDY ON THE AGE STRUCTURE AND DISTRIBUTION PATTERN OF MASSON PINE POPULATION ON THE JINYUN MOUNTAIN, SICHUAN PROV., CHINA缙云山马尾松种群年龄结构和分布格局的初步研究(英文)
6.Study on the Age Strcture and Spatial Distribution Pattern of the Salix oritrepha Population of the High-cold area in Eastern Qilian Mountains;东祁连山高寒阴湿地区山生柳种群年龄结构和空间分布格局
7.Analysis of Growth Porperities of Stolon and Age Structure of Sabina Vulgaris Population in Mu Us Sandy Land;毛乌素沙地天然臭柏茎生长特性及种群年龄结构分析
8.Analysis on the Population Structure of Stipagrostis Pennata in the Southern Fringe of Gurbantunggut Desert古尔班通古特沙漠南缘羽毛针禾种群年龄结构分析
parisons of Age Structure and Population Dynamics of Abies chensiensis and Abies fargesii秦岭冷杉和巴山冷杉种群年龄结构及动态的比较分析
10.Age structure is a foundational base to study the population dynamics.年龄结构是研究种群动态的重要基础。
11.Application of Life-Table to the Study of Age Structure of Mongolian Oak Population应用生命表对蒙古栎种群的年龄结构的研究
12.Bistable Waves for a Single Species Model with Age Structure in 2-Dimension Lattice;二维格上年龄结构单种群模型双稳行波解
13.Optimal Harvest Model for Single Species Grouped by Years;具有年龄结构的单种群最优捕获策略模型研究
14.Optimal Harvesting for a Population System Based on Age-Structure基于年龄结构的种群系统的最优收获控制
15.Age structure and point pattern analysis of four Cercidiphyllum japonicum populations in three provinces of Hunan,Hubei and Anhui湘鄂皖连香树种群的年龄结构和点格局分析
16.Optimal Harvesting for Three Competing Species With Age-dependent and Diffusion具有扩散和年龄结构竞争种群的最优收获(英文)
ponents and age structures of Calamagrostis pseudophragmites population modules in the Yily River Valley area,China伊犁河谷不同生境假苇拂子茅种群构件组成及其年龄结构
18.AGE STRUCTURE OF MAIN TREE SPECIES IN COMMUNITY OF TILIA BROADLEAF KOREAN PINE FOREST ON NORTHERN SLOPE OF CHANGBAI MOUNTAINS长白山北坡椴树阔叶红松林群落主要树种的年龄结构研究
相关短句/例句
age-structured population年龄结构种群
3)age-structured population model年龄结构种群模型
1.Numerical analysis of anage-structured population model with space-limited recruitment;有限空间年龄结构种群模型的数值分析
4)population age种群年龄
1.The carcass weight continuously increases with increase ofpopulation age.不同年龄组繁殖力差异显著,胴体重随种群年龄的增长而不断增加,各年龄组胴体重与体重、体长、尾长均呈正相关性,且与体重相关性达极显著。
5)populaton age groups种群年龄组
6)Age-structure年龄结构
1.Optimal control of population dynamic system with age-structure in periodic environment;周期环境下具有年龄结构种群动力系统的最优控制
2.Optimal Harvesting for Time-varying Population Dynamics with Spatial Diffusion andAge-structure;具空间扩散和年龄结构的时变种群系统的最优收获控制
3.The existence and uniqueness of nonnegative solutions of an age-structured MSEIR epidemic model with vaccination;带接种疫苗的年龄结构MSEIR流行病模型非负解的存在惟一性
延伸阅读
种群增长率(见种群出生率)种群增长率(见种群出生率)种群增长率见种群出生率。
