1) diversity(H)
名样性指数(H.)
2) biodiversity index
多样性指数
1.
The average density of phytoplankton and phytoplankton Shannon-Weiner biodiversity index in the surface water layer were 43 328 ind.
调查了三门湾健跳港海水养殖区夏季浮游生物的种类组成、密度和多样性指数,并将浮游生物群落指标与水质理化因子进行相关分析。
2.
The biodiversity index.
基于PFU原生动物群落多样性指数分析法对开封市5个水域的水质状况进行评价。
3.
The community and biodiversities of Rotifera,including species composition,density,biomass,biodiversity index and regression analysis were studied at six sampling stations(Ⅰ-Ⅵ) in the touring lakes,Ningbo.
L-1)为最高,日湖轮虫的Margalef多样性指数0。
3) Diversity index
多样性指数
1.
Distribution of diversity index H′of Chaetognatha in the East China Sea;
东海毛颚动物多样性指数H′的分布
2.
The growth of three working-groups of closed tackling and reconstruct,closed tackling and thinning,closed tackling and forestation low-quality and benefit forest were investigated and the diversity index was analyzed.
对封改、封抚、封造3种经营类型低效林复位调查及多样性指数分析表明:乔木层物种、株数都有大幅度的增加,林分结构趋向均匀,优势种仍是杉木、檫木,但很多目的树种进入到了乔木层。
3.
The community structure of rotifer,including species composition,density,biomass and diversity index,in the artificial river of Ningbo Higher Education Area during the summer in 2004 and 2005 was studied,and the biological assessment of water pollution and the trophic type were conducted by using the method of “indicator organisms” and “diversity index”.
研究了宁波高教园区人工河2004-2005年夏季轮虫的种类组成、数量、生物量和多样性指数的水平变化和年间变化,并用轮虫污染指示种类和生物多样性指数评价人工河水质污染及水质营养状况。
4) diversity indices
多样性指数
1.
The application of diversity indices in marine phytoplankton studies;
多样性指数在海洋浮游植物研究中的应用
2.
The diversity indices of the 4 plots in mid-Tianshan Mountains were all not high,but the species similarity indices between them were high comparatively.
本文采用物种重要值、丰富度指数、多样性指数和均匀度指数对新疆北部的石河子、伊犁果子沟、额敏、阿勒泰等7个地区的拟南芥(Arabidopsis thaliana)生存群落的群落结构和物种组成进行了研究,比较了不同样地间的物种多样性和相似性指数,并采用生态位适宜度模型,分析了天山北部拟南芥生存群落的生态位适宜度及其限制因子。
5) diversity
[英][daɪ'vɜ:səti] [美][daɪ'vɝsətɪ]
多样性指数
1.
The differences of advantage,diversity index and uniformity index of insect community in different altitude of Jiangping strict of Huping Mountain were analyzed The lowest index of advantage of insect community was in an altitude of 900m,with a slight increase in elevation.
对湖南壶瓶山江坪地区不同海拔高度的昆虫群落优势度、多样性指数和均匀度指数的差异进行了分析。
2.
Three seasons show different values of species diversity:spring H=0.
结果表明:广西南宁市及郊区人心果吸汁昆虫群落有3目15科21种,其中同翅目最多,有11科17种,在引种初期春季3月份,吸汁昆虫群落的丰富度较低,为9种,随着时间推移,群落的丰富度发生变化,从6月到8月中旬为群落重建阶段,有较多吸汁昆虫物种迁入,吸汁昆虫群落的丰富度为16种,秋季10月下旬下降为13,200d内人心果吸汁昆虫多样性指数随时间增加,从建群初期的0。
3.
An investigation of community diversity of arthropod in monsoon evergreen broad-leaved forest and in coniferous and broad-leaf mixed forest were conducted in Dinghu Mountain Biosphere Reserve, Guangdong in May and October 2001.
除 5月份的草本 -苗木层外 ,节肢动物的丰富度指数、多样性指数均是季风常绿阔叶林 >针阔叶混交林 ,优势集中性指数则是针阔叶混交林 >季风常绿阔叶林。
6) species diversity
多样性指数
1.
Their plant species diversity, studied with the help of richness indices (R1), Simpson s indices (λ) Shannaon-Wiener’s indices (H′) and evenness indices (E1)was shown to vary with habitats and human interferences.
结果表明:1)群丛植物物种多样性指数的大小受立地生境和人为活动的综合影响,群丛间植物种多样性的变化表明7个群丛对缙云山亚热带季风气候具有相似的适应性;2)依据草珊瑚生存群落物种多样性的大小对7个群丛进行排序后发现立地条件好,人为干扰小的群丛其物种多样性相对较高。
2.
In order to study the plant communities characteristics and species diversity of different measures of vegetation protection and restoration, Yanchi of Ningxia Hui Autonomous Region were selected as representative sample-plot.
运用生态统计学原理,结合BiodiversityPro、MicrocalOrigin等生态学统计软件对不同样地类型植物进行聚类、多样性指数计量等处理、分析。
3.
We evaluated the eutrophication level of the lakes by evaluating a comprehensive Trophic Level Index(TLIC),as well as the relationship between TLIC and species diversity(as measured by Shannon-Wiener index,Margalef index,and Simpson index).
2005年7月至2006年6月,我们对安徽省芜湖市境内5个湖泊中轮虫的群落结构及部分水质特征参数进行了调查,用相关加权综合营养状态指数(TLIc)评价了各湖泊的营养水平,分析了其中的轮虫群落结构、多样性指数及其与TLIC之间的关系。
补充资料：迁移效率指数、偏好指数和差别指数
迁移效率指数、偏好指数和差别指数
迁移效率指数、偏好指数和差别指数迁移效率指数是用于测定两地间人口迁移效率的指标。它是净迁移对总迁移之比。计算公式为:EIM一摇寿纂拼又‘。。上式中，}人么夕一材方}为i、]两地净迁移人数;从少+材户为i、]两地总迁移人数;El入了为迁移效率指数。 EIM的取值范围为。至100，如某一地区的值越大，反映迁移的的影响也越大。如果计算i地区与其他一切地区之间的人口迁移效率指数EIM厂，则: }艺材。一芝Mj、}EIM汀艺。+乏M，(j笋i) 迁移偏好指数是从一个地区向另一地区的实际迁移人数与期望迁移人数之比。计算公式为:____M.___材尸2行一:一二子一一不石一二，么M“ 了厂‘.厂‘、八 }二不十二六二1 、厂厂7上式中，M“为从i地迁到j地的实际迁移量;艺材。为总的人口迁移量;尸为总人口;M尸I，j为迁移偏好指数。通过计算迁移偏好指数，可以反映各地区的相对引力。 迁移差别指数是反映具有某种特征的迁移人口与非迁移人口区别的指数。例如，专业技术人员的人数所占比重，各种文化程度人数所占比重等，以便研究人才流失和其他间题。计算公式为:M‘从IMD、一翌不丝xl。。 .义V‘ N上式中，M为迁移人数;M，为具有i特征的迁移人数;N为非迁移人数;N‘为具有i特征的非迁移人数;了八了D、为迁移差别指数。
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参考词条