查询词典 breadth index

By using Shannon-Wiener index of niche breadth and Pianka index of niche overlap, this paper studied the niche characteristics of main plant species at different succession stages of vegetation in desert areas of north Gulang County, Gansu Province.

利用Shannon—Wiener生态位宽度公式和Pianka生态位重叠公式，计测分析了甘肃省古浪县北部荒漠植被主要植物种在不同植被演替阶段的生态位宽度和生态位重叠。

A space series substituting time series method was adapted and Levins niche breadth index and the Pianka Niche overlap index was applied to calculate the resumption of different age and population niche and niche overlap in spring-autumn grassland enclosed for different years at Zhaosu horse ranch.

采用空间序列代替时间序列的方法，运用Levins生态位宽度指数和Pianka生态位重叠指数，对不同围封恢复年限种群生态位及生态位重叠计算分析。

Applyed Levins Index corrected by Corwell and Wang gang Index, the niche breadth and niche overlaps of 20 species' in alpine meadow of Bayanbulak were measured at two resource dimension levels.

本文采用Levins提出经Corwell修正指数和王氏重叠指数，在土壤pH值和土壤全盐二维生态因子梯度上，测定了巴音布鲁克高寒草地20种主要植物种群生态位宽度和生态位重叠值。

The average of temporal niche breadth of mango anthracnose was 0.1177 according to disease index of leaf, while 0.2639 according to disease index of fruit.

时间生态位宽度指数分别为0.1177和0.2639，说明芒果炭疽病在时间维上的利用程度小，其发生和发展具有条件性；空间生态位宽度指数为0.7047和0.9040，病菌能够充分利用各空间资源；营养生态宽度指数为0.6662和0.5796，说明病菌可以侵染各品种，但品种间的抗病性有较明显差异，台农1号抗病性较强，红芒6号、凯特和白玉较易感病。

The cephalic index and the length-auri- culovertical height index obtained according to the measurement of the maximum length, the maximum breadth and ...

二、测量了196个左右两侧异区同型颅骨(即蝶顶缝型170个，异上骨型23个和额顳缝型3个)的头最大长、头最大幅和头耳高，并计算出头长幅指数和头长耳高指数，从而初步提出颅骨异区的各类型的形成可能与头长幅指数和头长耳高指数有关。

Based on regulation study, this paper adopts case analysis to establish tax cost and efficiency evaluation index system, and designs index weight with analytic hierarchy process, so that the evaluation index is more scientific and the evaluation result is more impersonal and effective; secondly, innovation in index design.

本文在规范性研究的基础上，采用案例分析，建立税收成本与税收效率的评估指标体系，用层次分析法设计指标的权重，使得评价指标更科学合理，评价结果更客观有效；二、指标设计创新。

In the process of establishing audit quality appraisal index system, this article decomposes it. According to the appraisal index system principle, it proposes audit quality synthesis appraisal index system of accounting firms by two levels and has determined the weight of each index using Analytic Hierarchy Process.

在构建审计质量评价指标体系的过程中，本文将会计师事务所审计质量进行层层分解，遵循评价指标体系的构建原则，提出了由一级指标和二级指标构成的会计师事务所审计质量综合评价指标体系，并利用层次分析法确定了各项指标的权重。

The results showed that during the research period,the fractal dimensions of paddy fields,dry land and wet areas increased obviously,whereas for forest land,shrubbery land and grass land,the fractal dimensions decreased.For all types of land,the values of landscape diversity index and landscape apartness index have increased but landscape dominance index value has rather decreased.Meanwhile it was found that the relation between fractal dimension and landscape fragmentation index showed significant positive correlation.

结果表明：水田、旱地、水域等土地类型的分形维数在研究时间段内有明显上升，有林地、灌木林地和草地等景观要素类型的分形维数降低；景观多样性和破碎度指数以及均匀度略有增加，而优势度指数下降；分形维数和破碎度指数呈极显著正相关。

Basing on the limitation analysis of single enterprise evaluation index of supply chain, this paper describes the characteristics, the design principle and function of the supply chain index system, establishes the evaluation index system, then uses level analytic approach to decide the weight of each evaluation index. finally it uses fuzzy comprehensive evaluation to study enterprise performance from the perspective of quantitative research and gives the measurement process.

本文在对供应链上单个企业的绩效评价指标的局限性的分析基础上，阐述了供应链指标体系作用及设计原则，并构建了供应链绩效评价指标体系，同时利用层次分析法确定各指标的权重，最后运用模糊综合评价方法从定量的角度对企业绩效评价方法进行研究，并给出评价过程。

Evaluation index of industrial water pollution are defined based on industrial wastewater emission standards and the emphasis of water control, according to industrial water pollution emissions data of 31 provinces in China impact of water pollution is calculated by the improved entropy method, lead, cyanide and ammonia nitrogen are in the top three on the impact of water pollution, water pollutant index are divided into heavy metals index and composite index by variable cluster.

根据我国工业各行业的排放标准和水污染控制重点，确定了我国工业水污染状况评价指标，采用改进熵权法对我国31个省区工业水污染物的排放数据进行计算，得到工业废水中铅、氰化物、氮氨对水污染影响居于前三位，应用变量聚类将水污染物分成重金属指标和复合指标，通过熵值对全国各地区工业水污染总体状况、重金属指标、复合指标进行排序，得到东部、中部地区是我国工业水污染较严重地区，但两个地区工业水污染原因有较大区别。

For every one of my New Year resolutions, I have been a backslider for years.

说到我的新年决心，我每年都做

With empathy and focus on a feeling level, we can all relate to the common ground of mutuality of emotions.

有了同情心和感觉上一级的重点，我们都可以涉及到相互的情感共同点。