1) aggregation indices
聚集指标
1.
Both χ2 test and aggregation indices were used in this study.
经卡方检验和5种聚集指标测定,野蚕幼虫在桑园的水平分布属于聚集分布中的负二项分布,即在桑园中的分布特点表现为极不均匀的嵌纹分布。
2.
Different aggregation indices were used to analyse the spatial patterns of R.
应用不同的聚集指标对玉米蚜种群的空间动态进行分析。
2) items centralization degree
指标聚集度
1.
Proffers the definition of items centralization degree and analyses its value in selection of optimal scheme.
给出了指标聚集度的定义并分析了它在方案优选中的价值。
3) Aggregate index
聚集度指标
1.
The spatial distribution pattern of the endangered and rare plant \%Tsuga longibracteata \%Cheng was studied using aggregate index and Iwao’s equation and Taylor’s model.
应用聚集度指标、Iwao方程和Taylor幂法则模型等测定方法研究珍稀濒危植物长苞铁杉(TsugalongibracteataCheng)的空间分布格局。
2.
This paper deals with the height structure,diameter class structure and age structure of Rhododendron huadingense population,analyzes its spatial distribution pattern using aggregate index and Iwao s equation and Taylor s model.
研究华顶杜鹃 (Rhododendronhuadingense)种群的高度结构、径级结构和年龄结构 ;应用聚集度指标、Iwao方程和Taylor幂法则模型等测定方法分析了该种群的空间分布格局 结果表明 ,华顶杜鹃的株数随基径级的增加而逐渐减少 ;高度级和年龄级结构近似正态分布 ;空间分布格局为聚集分
4) index of cluster size
聚集性指标
5) aggregation index
聚集度指标
1.
Based on aggregation index method,regressive model analysis method and Taylor s power law method reinterpreted by MA Zhan-shan,the spatial distribution pattern of Anoplophora chinensis larva accorded with assemble distribution type in the Betula spp.
应用聚集度指标法、回归分析法、马占山"重新解释的Taylor幂法则"对危害桦树的星天牛幼虫种群空间分布格局进行研究。
2.
By use of the aggregation indexes method, regressive model analysis method and zero frequency method, the spatial distribution patterns of Apriona germari (Hope) larva were studied.
运用聚集度指标、回归模型、零频率等方法对福建闽北地区杨树粒肩天牛幼虫的空间格局进行测定。
3.
Based on aggregation index method,regressive analysis method and Taylor s power law method reinterpreted by MA Zhan-shan,the spatial distribution pattern of Xyrosaria lichneuta larvae was conferred to assemble distribution type in the sample plot of Tripterygium wilfordii,and the basic distribution component was individual population.
应用聚集度指标法、回归分析法、马占山"重新解释的Taylor幂法则"对雷公藤丽长角巢蛾幼虫种群空间分布格局进行测定。
6) aggregation indexes
聚集度指标
1.
burmeister was examined by several aggregation indexes and regression analysis methods of Iwao.
应用多个聚集度指标和Iwao回归分析法对东方蝼蛄的分布格局进行研究,结果表明,东方蝼蛄在土壤中呈聚集分布,分布的基本单位是个体群。
2.
Based on aggregation indexes method,regressive model analysis method and Taylor power law method reinterpreted by Ma Zhan-shan,the spatial distribution patterns of Leptispa longipennis(Gestro) larvae and their adults were studied.
应用聚集度指标法、回归模型分析法、马占山“重新解释的Taylor幂法则”研究了长鞘卷叶甲幼虫与成虫的空间分布格局。
补充资料：聚集经济（聚集利益）（聚集效应）
n聚集经济（聚集利益）（聚集效应）是指由于某工业部 n门向某特定地域集中新产生的供生产成本降低的效果。因为分工协作，扩大生 产规模，节约使用基础设施等会降低生产成本。 n
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条