系数丛

The results are as follws: 1 This study randomly selected typical and wild populations of Alpinia oxyphylla Miq measured and compared their number of stem per cluster, plant height, number of fruit ear per cluster, single panicle weight, fruit yield per cluster, 100-seed weight and fruit yield.

结果显示，不同居群间的形态特征有显著差异，其中株高，单穗重和果实百粒重的变异系数较小；单丛茎杆数，单丛果穗数，单丛果实产量的变异系数较大。

In a word, our analyses showed the genetic diversity of Aristida pennata populations was rich and the genetic structure was complicate.

群体遗传分化系数为0.8247，表明有82.47％的遗传变异存在于株丛之间，而只有18.53％的遗传变异存在于株丛内。

According to the phytosociological theories and methods of Braun-Blanquet's school, the regional savanna vegetation of the dry-hot valleys of Yuanjiang river had been investigated. Based on the principle of fidelity degree, the typical 110 releves taken from every sampling stands of the dry-hot valleys were sorted up from below to upper into 15 Associations, then into 5 Alliances, 2 Orders and 1 Class. A synoptic classification system of Class-Order-Alliance-Association was established for the purpose to reflect deeply the characteristics of all syntaxa there in the aspect of plant component and their abundance-dominancy, presence, cover coefficient, life form, growth form, and ecological environment, community structure, species types and so on.

采用Braun-Blanquet植物群落学研究的理论与方法，对云南元江中上游干热河谷分布的植被进行考察研究，把各处取得较典型的110个样地记录按确限度的原则由下而上归类成15个群丛、5个群属、2个群目和1个群纲，建立了元江干热河谷萨王纳植被群纲—群目—群属—群丛分类系统综合表和15个群丛表，以全面深入反映全干热河谷植物群落各级分类单位中各植物种类组成的多优度、存在度、盖度系数、生活型和生长型等特征及其群落结构、生态环境和种型类别。

The results showed that the measured traits and their CVs of Kobresia humilis plants differed between their cut and uncut parts of the plants in the increasing significance order of the tillers,ramets and genets.

结果表明，矮嵩草株丛刈割部分和未刈割部分被测性状在处理间的差异显著性以及在构件等级间变异系数的大小均为分蘖层次》分株层次》基株层次。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。