levins
英
美
网络 莱文斯
双语例句
- Across geographic gradients, levins expects allopatric races or coenospecies exist.
穿过地理梯度，莱文斯预料有分布区不重叠的小种或近群种。 - It is not difficult, however, to arrange our information on forest trees within the framework set by Levins.
不过在Levins确定的范围内整理我们关于林木的材料倒不困难。 - Levins chooses another approximation to solve the problem of the combined effects of migration and seletion.
莱温斯采用了另一种近似法来解决迁移和选择的联合效应问题。 - 68 quadrats were divided into eight types of communities by TWINSPAN, which can be treated as one-dimension resource states. The niche breadths and overlaps of main dominant species were measured using a series of indices proposed by Levins, Shannon-wiener and Petraitis.
运用TWINSPAN把样方分为8个群落类型，用Levins、Shannon-wiener生态位宽度公式和Petraitis生态位特定重叠指数公式测定群落中主要种群生态位宽度和生态位重叠，并分析各种群生态位的生态学意义。 - Levins 'niche breadth was used for the host-specificity, while clip angle niche overlap and a fuzzy clustering analysis were used for host-selection.
宿主特异性用Levins生态位宽度进行测定。宿主选择用夹角余弦生态位重叠进行测定。 - The niche breadth and niche overlap of 18 dominant species in O. coerulea communities in mount Wutai were studied by using Levins and Shannon-Wiener's indexes and Petraitis's methods.
采用Shannon-Wiener和Levins指数以及Petraitis特定重叠指数对五台山蓝花棘豆群落的18个优势种群的生态位宽度和生态位重叠进行了研究。 - In 1969, Levins put forward the concept of metapopulation to describe the population made up of unstable populations living in fragmented patches.
Levins于1969年最早提出集合种群这一概念，用来指由生活在离散斑块中的不稳定的种群组成的种群。