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最小点数
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  minimal point
     Results showed that the minimal point number for species-point number curve was 119, and that for importance value-point number curve was 280. Species-individual curve indicates that the individual number needed for investigation should be multiplied fourfold, if we want to obtain doubling species number.
     无样地取样采用最近个体法,由种-点数曲线可以确定最少点数为119,而采用重要值-点数曲线,可以确定该雨林取样的最小点数为280。 种-个体曲线表明,如果要获取多一倍的物种数,则所需调查的个体数应是原来的4倍。
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  “最小点数”译为未确定词的双语例句
     Results show thatthe minimum points of plotless method are 16 to 18, the distance betweentwo neighborhood points and that between two sampling lines is 15 and 20meters, respectively.
     研究结果指出,应用无样地方法中的中点象限法,其最小点数是16-18个点,点间距为15m,样线间距为20m。
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     Let G be a simple connected graph. If the minimum number of points separating any independent set S of points in G is the maximum number of disjoint paths between the points of S. then G is called a Monger's graph. We consider some composition graphs and give conditions for them to be Menger's graphs.
     设G是一个简单连通图.若分离G的任一独立集S的最小点数等于连接S的点之间的内部不相交路的最大个数,则称G是Menger图.我们考虑了图的几种运算并给出了运算后的图是Menger图的条件.
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  相似匹配句对
     The effects of N,P,K on flower quality are different;
     P肥.
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     The Minimum Cost Router
     费用布线
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     In this paper, the minimum trees (with respect to Wiener-Hosoya index) with given orders and diameters are determined.
     任意给定点数及直径,本文确定了相对于该指标的树.
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  minimal point
For an H+ ion energy of 14 MeV, the unit provides a rectangular scanning raster with a linear size of ±300 μm on the target and a minimal point-to-point switch time of 200 μs.
      
Optimality conditions in terms of Lagrange-multipliers for an ?-weak Pareto minimal point are established in the general case and in the case with nearly subconvexlike data.
      
Necessary and sufficient conditions for the existence of an ?-weak Pareto minimal point are obtained.
      
204):Theorem: Let S be a compact monoid such that the orbit space S/(H×H) is a totally ordered connected space with M(S) as its minimal point.
      
Finally an example of a minimal point distal dynamical system is constructed for whichEX∩(X0×X0)≠, whereX0 is the denseGδ subset of distal points inX.
      
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The south-subtropical evergreen broad-leaf forest of Mt. Dinghu has been studied by using both the "quadrat method" and "point-centred quarter method". Twenty 10×10m. quadrats and fourty point-centred quarter samples were restricted at random (partial random) and arranged in the same stand.

本文研究了样地取样技术和无样地取样技术在南亚热带常绿阔叶林的应用。认为中心点四分法无样地取样技术具有较高的精度和效率,完全适用于南亚热带常绿阔叶林。应用中心点四分法无样地取样技术所获得的能反映群落真实特征的中心点数目,称为“最小点数”。评定最小点数,可应用种类数目与中心点数目的相关曲线,即“种—点数曲线”;以及优势种重要值与中心点数的相关曲线,即“重要值—点数曲线’。据研究南亚热带常绿阔叶林的最小点数为20—22点。“重要值—面积曲线”与“重要值—点数曲线”是评定最小面积与最小点数的测度新方法,在某种意义上较“种—面积曲线”更为理想。

Two methods of vegetation surveying, the point-centred quarter method and plot method, were used in the investigation of the warm-temperaet deciduous broad-leaved forest of Taibai Natural Reserve on Qiuling Mountains, Shaanxi Province,, China.The forest is dominated by Querous attena var. acuteserrata. By comparison of the results obtained through pointcentred quarter method, with the results obtained through plot method (<0.5ha), it has been shown that the point-centred quarter method has higher precision and...

Two methods of vegetation surveying, the point-centred quarter method and plot method, were used in the investigation of the warm-temperaet deciduous broad-leaved forest of Taibai Natural Reserve on Qiuling Mountains, Shaanxi Province,, China.The forest is dominated by Querous attena var. acuteserrata. By comparison of the results obtained through pointcentred quarter method, with the results obtained through plot method (<0.5ha), it has been shown that the point-centred quarter method has higher precision and efficiency than plot method as judged by species composition, range corelation coefficient of important.

本文以秦岭太白山自然保护区内锐齿栎(Quercus atiena var. acuteserrota)为优势的暖温带落叶阔叶林为对象,采用与大样地(0.5公顷)实测结果的比较,研究了无样地法中的中点四分法取样技术在暖温带落叶阔叶林中的应用。认为中点四分法取样技术,具有较高的精度和效率,可适用于暖温带落叶阔叶林。并用种点数曲线确定了暖温带落叶阔叶林的最小点数为15个。

Sampling techniques for Korean pine (Pinus horaiensis) forests mixedwith deciduoud trees in the Lesser Xiaoxingan Mountains were studied.Plotless sampling method (point centered quarter method) is considered tobe a kind of suitable method for this kind of vegetation. The study wasdone by examining four types of forest communities. Results show thatthe minimum points of plotless method are 16 to 18, the distance betweentwo neighborhood points and that between two sampling lines is 15 and 20meters, respectively....

Sampling techniques for Korean pine (Pinus horaiensis) forests mixedwith deciduoud trees in the Lesser Xiaoxingan Mountains were studied.Plotless sampling method (point centered quarter method) is considered tobe a kind of suitable method for this kind of vegetation. The study wasdone by examining four types of forest communities. Results show thatthe minimum points of plotless method are 16 to 18, the distance betweentwo neighborhood points and that between two sampling lines is 15 and 20meters, respectively. The data from 16-18 points is analogous to that from600m~2 of plot. The minimum area of understoreys is 28-32m~2, whichis 7 or 8 2×2 m quardrats distributed randomly or mechanically.

本文研究了小兴安岭红松针阔叶混交林的取样技术。通过对三个群落类型的取样研究,认为所应用的无样地方法适用于该植被类型。研究结果指出,应用无样地方法中的中点象限法,其最小点数是16-18个点,点间距为15m,样线间距为20m。16-18个样点的数据,相当于600m~2的样地资料。林下植被的最小面积是28-32m~2,为7-8个2×2(m)随机或均匀分布的样方。

 
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