查询词典 niche

Fungicide interference reduced the temporal and spatial niche breadth of mango anthracnose and it had more significant effect on spatial niche breadth.

药剂干扰压缩了芒果炭疽病的时间和空间生态位宽度，对空间生态位宽度的影响更为显著。

The niche theory was used to determine the habitat niche of mango anthracnose.

本文应用生态位理论，测定芒果炭疽病生境生态位。

The niche breadths of adults and subadults of three anuran species (Rana kukunoris, Nanorana pleskei and Bufo minshanicus ) in Zoige Wetland Nature Reserve, Sichuan, China were studied. The results showed that the niche breadths of B. minshanicus adults on the 5 dimensional axes including character of pasture, number of yak dung, vegetation coverage, temperature and humidity of ground surface, were narrower than those of R.

研究了若尔盖湿地国家级自然保护区的3种无尾两栖类，高原林蛙、倭蛙和岷山蟾蜍的成体和亚成体在7个生境因子(牧场性质、牛粪数量、植被高度、植被盖度、距水塘距离、地表温度、地表湿度)上的生态位宽度。

The temporal and spatial niche breadth value of Propylaea japonica was maximum, and the temporal niche overlap value of Theridion octomaculatum between dominant predatory enemies and Aphis gossypii was maximum and the spatial niche overlap of Pardosa T-insignita was maximum.

对淮北棉田节肢动物优势种群组成和时空生态位进行分析，结果表明：棉蚜、烟粉虱、棉叶螨、棉盲蝽、四点亮腹蛛、龟纹瓢虫、T-纹豹蛛、草间小黑蛛、八斑球腹蛛、华姬猎蝽、小花蝽和青翅隐翅虫为优势种群；时间和空间生态位宽度值都是以龟纹瓢虫最大，捕食性天敌优势种群与棉蚜时间生态位重叠值以八斑球腹蛛最大，空间生态位重叠值以T-纹豹蛛最大。

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。

Based on the investigation of the growth status of gardens plants with the same site conditions, the important values of populations were calculated with the software of ArcMap, the niche breadth of populations were studied using the Shannon-weinne diversity index, Levins niche breadth index and niche overlap.

通过对立地条件类型相同城市的园林绿地植物生长状况进行调查，运用ArcMap软件计算各种群的重要值；采用Shannon-weinne多样性指标、Levins生态位宽度指数和1994年黄英姿提出的生态位重叠计算公式进行种群生态位宽度的研究，将种群生态位理论运用于生态园林建设中。

Based on the importance value, the Shannon-Wienner and Simpson index of niche breadth, the Schoener's niche proportional simulation and the Levins' niche overlap of the main trees in Qiandaohu water conservation forests were calculated in the paper.

以群落样地作为资源状态，以树种的重要值作为树种对资源位计测依据，用Shannon-Wienner、Levins和Schoener的生态位计测公式，分析了千岛湖水源涵养林26个主要树种的生态位宽度、生态位相似性比例和生态重迭指数。

In Kubuqi sandland of Erdos plateau, according to the investigating result of the component of rodent animal, vegetation and soil from the different habitat at 1995, we analyzed the connections between the community structure of sand land rodent animal and environment by COA, and described the spatial niche of the main rodent animal by the Levins index of niche width and Petraitis overlapping index of niche.

根据 1 995年在鄂尔多斯高原库布其沙地不同生境类型上鼠类构成、植被以及土壤因子的调查结果，以对应分析排序技术分析了沙地啮齿动物群落结构与环境因子的关系，以 Levins生态位宽度指数和 Petraitis种群生态位重叠指数对常见啮齿动物种群空间生态位进行定量描述。

MethodsFive indexes, ShannonWeaner diversity value, Pielou uniformity value, dominance value, Levins niche width value and Petraitis niche overlap value were calculated to describe the community structure and niche characteristics of the HFRS host rats in the experimental districts.

方法以ShannonWeaner的群落多样性指数、Pielou群落均匀度指数、优势度指数、Levins生态位宽度指数、Petraitis生态位重叠指数定量描述疫区内HFRS宿主鼠类的种群结构及生态位特征。

With the scores of species niche center defined in n-dimensional niche space, species could be ordinated in the niche space.

物种在生态位空间的分布可以视为&大气状的&，根据物种在n维生态位空间所确定的物种生态位中心点，物种可以排序于生态位空间。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。