多样性指数
例句与用法
- The eco - environment in the study area is very vulnerable to the land use change , resulting in land desertification and loss of water and soil
15年里景观破碎化程度加剧，分维数和多样性指数增加，优势度降低，景观异质性增强。 - Moreover , there was smaller difference for the structural diversity value among all of plots . elevation is not a main factor affecting those indices
总的来说，各样方的结构多样性变化幅度不大，海拔不是影响各多样性指数的主要因素。 - The t - test result shows that the species diversity index , evenness index and consume biomass are no significant differences between 12 years fore - and aft
T检验结果表明，多样性指数、均匀性指数的消费生物量， 12年前后的差异不显著( p 0 。 01 ) 。 - Coefficient of gene differentiation ( gsr ) was 0 . 1567 , that was 15 . 7 % of genetic variation among subpopulations , and 84 . 3 % within subpopulation
基因分化系数g _ st值和shannon多样性指数分析结果均表明遗传变异的大部分存在于亚居群内(约为84 - The variation of species richness and diversity index in jinfo mt . and guilin plots is same . in general the biodiversity in jinfo mt
桂林实验场和金佛山样地物种丰富度、多样性指数的变化趋势基本一致，总体上，金佛山的物种丰富度和多样性指数都较桂林地区高。 - It was also proved that spatial diversity index could reflect the habitat suitability of wildlife quantitatively and describe the habitat spatial pattern explicitly
同时还表明空间多样性指数能够定量地反映野生动物生境的适宜程度，并能直观地描述生境的空间格局。 - The species richness and diversity index of the tree layer and the shrub layer was obviously higher than that of the herb layer , and their evenness had evident difference
乔木层、灌木层的物种丰富度、物种多样性指数均大于草本层,且差异极显著,群落均匀度差异显著。 - The abundant degree of plants , seed seedling amount , and the diversified index in the seed bank of the urban green land are lower than the natural second growth forest in outer suburbs
城市绿地土壤种子库中种的丰富度、种子苗量、多样性指数均不如远郊区山地天然次生林。 - A total of 445 species belonging to 24 families was collected , among which noctuidae and geometridae are dominant groups and 13 species are common to every forest zone
随海拔的升高类蛾的多样性指数明显降低，其中红松阔叶林带蛾类的物种丰富度、个体数量和多样性指数都最高。 - Number of species and individuals , species diversity index and evenness , and proportion of wader birds decreased from bay - mouth to bay - head , and was lowest in midbay
其中湾口的水鸟物种数、个体数量、多样性指数、均匀度指数以及涉禽所占比例均为最高，湾底次之，湾中部最低。