您要查找的是不是:
- Objective To investigate the species abundance distribution of ectoparasitic gamasid mites on Rattus flavipectus and illustrate the relationship between species and their corresponding individuals in the gamasid mite community. 目的研究黄胸鼠体表寄生革螨的种多度分布,阐明革螨群落内物种数与个体数之间的关系。
- STUDIES ON KERNEL DENSITY ESTIMATION OF SPECIES ABUNDANCE DISTRIBUTION IN TWO COMMUNITIES OF RARE AND ENDANGERED PLANTS 两种珍稀植物群落物种多度分布的核方法研究
- Research on Species Abundance Distribution of Gap in Wanmulin in Central Subtropical Evergreen Broad-leaved Forests 万木林中亚热带常绿阔叶林林隙内物种多度分布格局
- Study on fitting the model of species abundance distribution by the power-exponent equation 幂指数方程拟合物种多度分布模型的研究
- Study on species abundance distribution model of the rare and endangered plant Tsuga longibracteata community 珍稀濒危植物长苞铁杉群落物种多度分布模型研究
- species abundance distribution 种、丰度分布
- Lastly, by using the Niche preemption model, Broken stick model, Overlapping niche model and Logarithmic series distribution, species relative abundance distribution in forest community, thicket community and grassland community in ATB were studied. 最后,通过生态位优先模型、分割线段模型、重叠生态位模型、对数级数分布模型4种物种相对多度分布模型对安太堡矿区森林群落、灌丛群落和草地群落的物种多度进行拟合。
- The copepods abundance impact on the abundance distribution of fish eggs, larvae. 长江径流量变动对鱼卵仔鱼数量和分布产生一定的影响。
- It was found that: (1) In all 17 plots, herb layers had the highest species abundance,and tree layers had the highest species evenness. 结果如下:()门个样方中物种丰富度指数是草本层最高,均匀度指数是乔木层最高。
- Species abundance pattern plays an important role on community structure. So far, less attention has been paid to abundauce pattern in ecology study. 物种多度格局是群落结构的重要内容,但在目前的生态学研究中对其重视不够;
- In this paper, the kind, diversity and abundance distribution of marine phytoplankton viruses and their main roles in marine ecosystem and research status are introduced. 介绍了海洋浮游植物病毒的种类、多样性和丰度分布及其在海洋生态系统中的主要作用和研究现状。
- The avian species abundance is at a low level in the primary stage of vegetation succession, goes up in the second stage, and declines in the high stage. 鸟类的物种丰富度随着滩涂演替的推进经历由低到高再到低的过程。
- Using the solution of S process chain with an exponential neutron irradiation the S process abundance distribution of AGB stars of different metallicities is investigated. 利用指数辐照理论的解析解研究了AGB星S过程元素的丰度分布规律。
- The main factors which decided the characteristics of Larix Chinensis forests were analyzed, the order is DBH?tree height?age?Area at breast height?species abundance. 通过主成分分析,对太白红杉林特征起决定作用的因子依次是:胸径?树高?年龄?胸高断面积?物种丰富度;
- When these techniques are combined with a scanning focused beam system and a data acquisition system, abundance distribution of elemental composition can be displayed. 如果将粒子束聚焦;且装上扫描设备和计算机数据获取系统;可以得到样品中元素丰度分布的扫描图.
- The forage yield increased by 206.8%; the species number increased by one grade and density increased by 550%; the species abundance index increased by 800% and the evenness index increased by 66.7%. 迎风坡上部植被非常稀疏;不形成群落;植株平均高度25.;3 cm;产草量增加206
- Aggregated distribution-abundance model could better estimate the species abundance than random distribution-abundance model, suggesting that most species were aggregately distributed. 聚集分布多度模型预测物种多度的结果要好于随机分布多度模型,这表明该区大多数物种是聚集分布的。
- First discussed in the theory of island biogeography, and then applied to habitat islands, is the effect of island size, isolation, and location on species abundance and biodiversity. 首先讨论海岛生物地理学理论,有关海岛大小、隔离和地点的应用在种类丰富且生物多样性之海岛栖地上。
- There was an abundance of corn last year. 去年玉米丰收。
- She had an abundance of very black hair. 她有一头浓密的深黑色头发。