dominance index

In the study , the dominance index and evenness index are used for analysis .

本研究采用优势度指数和均匀度指数进行分析。

The dominance index is often contrary to the diversity index , index of diversification and evenness index in change rules .

优势度指数常常与多样性指数、多样化指数、均匀度指数的变化规律相反。

Random Dominance Index Method and its Application

随机优势指标方法及其应用

Simpson dominance index showed decreasing trend ( 0.4176 & 0.3368 ) .

优势度则呈下降趋势（0.4176&0.3368）。

The landscape diversity index , evenness increased and the dominance index decreasing .

景观多样性指数增加、均匀度增加，优势度下降，破碎化严重。

Apply richness , species diversity , dominance index to study 10 different plantation communities .

应用丰富度、多样性、均匀度指标，研究了北京西山地区10种人工林群落的物种多样性。

Using patch type area calculate the dominance index can reflect the landscape in a real manner .

用斑块类型面积作为优势度指标能够较好的反应实际情况。

The spider species in different period in cotton field was obtained using Berger Parker dominance index ( d ) .

依据Berger-Parker（1974）优势度指数（d），分析得出了不同时期棉田蜘蛛的优势种类，并对其季节变动趋势进行了研究。

There was significant difference among restoration series on α diversity except dominance index , but not significant difference between two secondary forest types .

除优势度指数以外，其他指数在不同恢复系列间差异显著，而在2种次生林类型间差异均不显著；

According to further research of the measured results , the use and the effect as well as the ecological meaning of ecological dominance index are explored .

本文还进一步探讨生态优势度的生态学涵义。说明生态优势度指标的群落生态学意义，指出与物种多样性指数、群落均匀度在概念上的联系与差别，以及三者在应用上的异同。

Through selecting the indices such as patch size , patch shape index , fractal dimension , diversity and dominance index , etc.

选取斑块大小、斑块形状指数、分维数、景观多样性和优势度等指标，对湿地景观空间格局进行分析。

As for the dominance index , expect the abandoned land was low ( 0.2346 ), all the other artificial recovery models were very high .

而对于优势度而言，除了自然撂荒地偏低（0.2346）外，其余其中人工恢复模式均具有较高的优势度指数。

Evenness index of community D is the highest ( 0.721 ), but its dominance index is the lowest ( 0.407 ) .

农户住房鼠类群落均匀性指数最高，为0.721，而优势度指数最低，为0.407。

There are a higher diversity and fragmentation index value and a lower dominance index value of land resources in Mountainous regions and seaside regions ;

山地丘陵区及沿海地区土地资源多样性指数和破碎度指数高，而相应的优势度指数则较低；

Yellow sea and Bohai Sea area of fresh water fish dominance index ( 0.38 ) was higher than that of marine fish ( 0.07 ) .

黄渤海区淡水虾虎鱼类优势度指数（0.38）明显高于海洋虾虎鱼类（0.07）。

The louse communities on small mammal hosts are quite simple with lower species richness and diversity and with a high dominance index .

各小兽宿主体表吸虱群落简单，物种丰富度和生物多样性均很低，大多数优势虱种的相对优势度很高，优势种地位突出。

Insect community indices were fluctuated with time obviously . The dominance index of pest was high from August to October and in April .

昆虫群落指数有明显的时间变化，害虫在4、8-10月份优势度高；

In the study area , the recovery models which had the same ecological configuration mode , had similar species diversity index , species evenness index and dominance index .

研究区内具有相同生态配置模式的恢复治理模式具有相近的物种多样性、物种均匀度和优势度指数。

Their control capacity on integral landscape structure and function outweighs other landscape types due to large coverage area , perimeter , dominance index and low fragmentation index .

景观面积、周长、优势度指数较其他景观类型大，破碎度指数较其他景观小，对景观整体结构、功能及其变化的控制作用较强。

Based on the measurement of the ecological dominance index , the index of the gap edge effect in the gap border area was about 0.653 1 ~ 2.740 3 .

而用生态优势度值测定的林隙边缘区的边缘效应强度值为0.6531~2.7403。

The selected indices included patch number , patch size , patch density index , richness index , dominance index , evenness index and diversity index .

选取的景观空间格局度量指标包括：斑块数量、斑块大小、斑块密度指数、丰富度指数、优势度指数、均匀度指数、多样性指数等。

The characteristics of the species composition in the forest boundary were analyzed by species diversity index , species richness index , species evenness index and species dominance index .

用物种多样性指数、丰富度指数、均匀度指数和优势度指数，对边际带物种组成的特征进行分析；

The results showed that it consists of smaller patches and had high landscape diversity and evenness index though low in landscape dominance index , so it was a uniform landscape .

结果表明：苏尼特右旗荒漠草原主要是由面积较小的斑块组成，多样性和均匀度均较高，但优势度较低，属于比较匀质的景观类型；

The result showed that the patch density , diversity index , and evenness index of the overall landscape were increased , yet the fragmentation degree and dominance index were decreased .

结果表明，湛江海洋大学主校区整体景观的孔隙度、多样性、均匀度增加，而破碎度、优势度减小。

The dynamics of dominance index , richness , diversity and evenness were analyzed ; and the dynamics of main insect pests and natural enemies population were analyzed , too .

分析了主要害虫与天敌的优势度指数、丰富度、多样性指数、均匀性指数的时间动态及主要害虫与天敌种群的时间动态；

Comparing with four riparian landscapes pattern , the landscape richness and evenness in that near to suburbs were higher than that in urban , but dominance index lower .

比较4条河岸带景观，位于近郊的河岸带景观丰富度及均匀性均高于市区河流、优势度低于市区河流。

Just land use pattern index speaking , the diversity index and the evenness index of land use were increased , meanwhile the dominance index and the fragmentation index of land use were decreased .

就土地利用格局指数来看，土地利用多样性指数、均匀度指数增加，优势度、破碎度指数减小。

The dominance index of forest cover was increased from 0.611 to 0.692 during the period from 1985 to 1993 , and that of climax forest community was increased by 70 % .

1985～1993年间，有林地优势地位加强，优势度从0.611增加到0.692，顶极群落优势度增加70%；

Comparing the stability of two forests with community dominance index ( C ), it was clear that the C of the closed stable forest was higher than that of the disturbed forest .

利用群落优势度（C）衡量了两个群落的稳定性，表明郁闭林的群落优势度远高于人为干扰林。

Dominance index is 0.17 ~ 0.85 , average is 0.41 . The diversity index and evenness are lower than the nature waters of east Guangdong , and dominance index is higher .

优势度指数在0.17~0.85，平均为0.41。多样性指数和均匀度均比粤东海域低，但优势度则甚高。