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样方取样
相关语句
  quadrat sampling
     The distribution pattern of plant species in communities is closely related to spatial scale. Quadrat sampling and traditional methods only can analyse pattern in one scale. Therefore, it is difficult to reflect species spatial characteristics completely, no matter how rational for quadrat size.
     植物种群在群落中的分布格局与空间尺度有着密切关系,传统的样方取样及其格局分析方法,只能分析一种尺度下的格局。
短句来源
  “样方取样”译为未确定词的双语例句
     Sampling method has been used in studying forest comrnunities in LuYa Mountaias in this papet. The relative dominance of dominant plant populations has been regarded as the measure of the niche overlap and their competition has been diseussed with Lotka-Volterra equation of competition.
     本文采用样方取样的方法对芦芽山森林群落进行了调查研究,并应用LotkaVolterra竞争方程描述了优势植物种群的竞争。
短句来源
     The phytocoenololgical characters of the Castanopsis carlesii forest in North Guangdong were studied. Floristic elements were analyzed based on the 6 300 m 2 samples. 184 species of vascular plants belonging to 59 families and 123 genera were found to occurred on the forest.
     用样方取样法对粤北小红栲 (Castanopsiscarlesii)林进行调查 ,并对粤北小红栲林结构特征进行了研究 结果表明 ,粤北小红栲林的植物种类繁杂 ,在 6 30 0m2 的样方面积中有维管束植物 184种 ,隶属于 5 9科 12 3属 优势科为壳斗科、樟科、茶科等 ;
短句来源
     The spatial pattern of each grade of seedlings was tested with"v/m ratio"," Morisita's dispersion index", and "Lloyd's patchiness index" etc. The variation of the spatial pattern sampled with different quadrats is discussed.
     采用“方差 /均值”法 ,Lloyd聚块性指标m /m等指数测定了各立木级米槠幼苗的空间分布格局 ,并探讨了用不同样方取样情况下空间格局的变化情况。
短句来源
     Method:Combination of visit inquisition and sample square investigation involving the resource complexion of the 32 counties and cities in the northeast China wasmade.
     方法 :本次考察采用调查走访和现地样方取样测定相结合的方法 ,对东北地区 32个县市的资源情况进行了实地考察 ,并通过样方法对资源储量进行了准确测定。
短句来源
     The plant community characteristics were measured with quadrat samples in Hulunbeier meadow steppe. The vegetation and soil data were used to divide the quantitative stage of degradation with systematic cluster analysis.
     采用样方取样方法实地调查内蒙古呼伦贝尔草甸草原的植物群落特征,利用植被和土壤数据,应用系统聚类分析方法对其草地退化等级进行定量划分.
短句来源
  相似匹配句对
     Multi-Sampling Effect
     多次取样效应
短句来源
     Sampling Device of Synthetic Resin
     合成树脂取样装置
短句来源
     When preciseness level is 0.1,the optimum sam-piing numbers are 56 leaves each sampling set,total about 3 trees fromone apple orchard.
     在精确度为0.1时,一般果园取样3株,每样方56叶。
短句来源
     The sampling area 400m~2(20×20m) is applicable all to the forest com- munities in the region.
     采用400m~2(20×20m)的样方面积可满足该地区一切森林群落取样的需要。
短句来源
     272 plots were finished.
     共做样方272个。
短句来源
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  quadrat sampling
Pitfall trapping and excavated-quadrat sampling were used to survey U.
      
Quadrat sampling and pitfall sampling showed that with the former only a small proportion of bait-consuming predators were caught whereas with the latter method this proportion was high.
      
Data on quantitative distribution of the biota were collected using quadrat sampling techniques; the data were processed by using cluster analysis.
      
This technique, which involved random quadrat sampling, photographic recording and image analysis, was able to provide data on the three parameters with acceptable precision and was cost-effective in the field.
      
Kuno's CAindex using quadrat sampling is calculated, and the dependence of the index on time, quadrat size, initial density, and diffusion and branching rules, is discussed.
      
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The plant population pattern is a real charocteristic in a forest community. Like all statistical methods used in the study of the phytocoenology, the results of the testing and analysis of the plant population pattern depend heavily on the field sampling method used with the community. In three different communities in the Ding Hu Shan natural reserve, Guangdong, China, the following five methods were applied to the sampling for information on plant species distribution: 1. Random quadrats, 2. contiguous grid...

The plant population pattern is a real charocteristic in a forest community. Like all statistical methods used in the study of the phytocoenology, the results of the testing and analysis of the plant population pattern depend heavily on the field sampling method used with the community. In three different communities in the Ding Hu Shan natural reserve, Guangdong, China, the following five methods were applied to the sampling for information on plant species distribution: 1. Random quadrats, 2. contiguous grid quadrats (Greig-Smith, 1952; Kershaw, 1957), 3. point-centered quarter(Bray, 1962), 4. nearest neighour(Clark and Evans, 1954) and 5. closest individual (Pielou, 1959).

森林群落中植物种群分布格局测定和分析的结果,密切依赖于野外取样的技术手段及资料的可靠性。本文通过鼎湖山自然保护区三个不同森林群落类型的取样,比较了随机样方、相邻格子样方、中心点四分法、最近相邻法和最近个体法在野外操作、数据整理以及种群分布格局测定分析中的效用,对各方法在南亚热带森林群落中进行种群分布格局研究中的适用性予以客观评价。研究表明,同一样地中不同取样方法和测定方法会导致不同结果。随机样方取样数据的测定结果受样方大小影响;而几种无样地方法在种类复杂的群落中,应用受到限制。相邻格子样方适用于各群落类型中种群分布格局的测定与分析。

Sampling method has been used in studying forest comrnunities in LuYa Mountaias in this papet. The relative dominance of dominant plant populations has been regarded as the measure of the niche overlap and their competition has been diseussed with Lotka-Volterra equation of competition. The result indieates that theorder of competition ability is as follows. Picea meyeri>p.wilsonii>Larix prineipis-ruppreehtii>Pinus tabulaeformis>PoPulus davidiana>Betula platyphylla. We can see f.romthe above that the cold-temperate...

Sampling method has been used in studying forest comrnunities in LuYa Mountaias in this papet. The relative dominance of dominant plant populations has been regarded as the measure of the niche overlap and their competition has been diseussed with Lotka-Volterra equation of competition. The result indieates that theorder of competition ability is as follows. Picea meyeri>p.wilsonii>Larix prineipis-ruppreehtii>Pinus tabulaeformis>PoPulus davidiana>Betula platyphylla. We can see f.romthe above that the cold-temperate coniferous trees are the climax, vegetation succession in this area and the competition of dominant plant populations is the important cause of vegetation sueeession. Aecording to the result above. the author puts foward the ideas how to manage the forest communities in this mountainous area.

本文采用样方取样的方法对芦芽山森林群落进行了调查研究,并应用LotkaVolterra竞争方程描述了优势植物种群的竞争。结果表明,芦芽山森林群落优势种群的竞争能力依次为:青杄>白杄>华北落叶松>油松>山杨>白桦。竞争的结果,证明了寒温性针叶林是本区的演替顶极,优势种群竞争是群落演替的主要动因。

The distribution pattern of plant species in communities is closely related to spatial scale. Quadrat sampling and traditional methods only can analyse pattern in one scale. Therefore, it is difficult to reflect species spatial characteristics completely, no matter how rational for quadrat size. Point pattern analysis, based on species spatial mapped points, is introduced in this paper. Three advantages over traditional techniques, emerged in the analysis of three dominant species in oak forests in Clinton county...

The distribution pattern of plant species in communities is closely related to spatial scale. Quadrat sampling and traditional methods only can analyse pattern in one scale. Therefore, it is difficult to reflect species spatial characteristics completely, no matter how rational for quadrat size. Point pattern analysis, based on species spatial mapped points, is introduced in this paper. Three advantages over traditional techniques, emerged in the analysis of three dominant species in oak forests in Clinton county Michigan, USA. Firstly, it can analyse species spatial patterns and interspecific associations at any scale. Secondly, its results are more consistent to the reality, especially for community structure. Thirdly, it is more suitable for study of relationships between species pattern and time scale. The three species analysed in this paper have obvious clumping feature, while they vary with scales.

植物种群在群落中的分布格局与空间尺度有着密切关系,传统的样方取样及其格局分析方法,只能分析一种尺度下的格局。本文引入一种新的格局分析方法——点格局分析,其是以种群空间分布的坐标点图为基础,通过本文对美国密西根州克林顿县栎林3个优势种格局分析,它有3个明显的优点:1)能够分析各种尺度下的种群格局和种间关系,结果清楚,直观;2)所描述的结果更符合实际,尤其是对群落结构的描述;3)它有利于定点观察,研究时间与种群格局的关系,本文分析的3个种集群特征明显,但随尺度的变化有不同的分布趋势,3个种间的关系也是如此。

 
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