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According to the life form of species and their roles in communities, 6 species groups are used to do ordination analysis and environmental interpretation. The result suggests that:①Despite the strong man-made disturbance at lower altitude sites, the number and character of evergreen species show an change along the altitude gradient.②The rare and endangered species concentrated at two sectors along altitude gradient, corresponding to the upper and lower borders of the mountain mixed forest belt of evergreen and deciduous broad-leaved species.③The pioneer tree species concentrated on the middle and upper positions at lower elevation.④The deciduous accompany tree species show a great diversity on middle and lower position at middle and higher elevation.⑤Coniferous species differentiate along elevation and local topographical gradient.⑥Deciduous species in Quercus, Castanea, Fagus, Carpinus genus as well as coniferous species play primary community-constructing roles at different topographical position at Dalaoling region.

根据物种生活型及其在植物群落中的地位,分6个种组进行排序和环境解释,表明:①尽管低海拔地段受到强烈人为干扰,常绿种类仍显示了数量和性质沿海拔梯度的变化;②珍稀物种在海拔梯度上形成两个相对集中的区段,大致对应于山地常绿落叶阔叶混交林带的上下边缘;③先锋树种在中低海拔的中上坡位富集;④在中、高海拔的中低坡位,落叶的乔木伴生种显示了极大的多样性;⑤为数不多的针叶树种在海拔和局部地形梯度上也有明确分异;⑥它们和落叶的栎、栗、水青冈、鹅耳枥属物种在大老岭地区不同地形部位的植被中起着主要的建群作用。

There are 6kinks of loop bedding, such as smooth polliwog shape, horsetail or pinch-and-swell loop, associated with syn-sedimentary microfracture, catenarian loop bedding group, spindle loop bedding group and loop bedding with a slungshot as core in the studied area.

研究结果表明,济阳坳陷古近纪软沉积物变形层中的环状层理类型多样,形态复杂,计有光滑圆环状及蝌蚪状带&小尾巴&的环状层理、马尾丝或串珠状不规则环圈的环状层理、与阶梯状微断裂伴生的环状层理、链条状环状层理群、纺锤型环状层理群和中心为&飞石&环圈较光滑的环状层理等6种。

The results showed:(1)The flora of community is rich and complex,and it belongs to the transitional zone for many genera,the subtropical-temperate zone geographical composition of genera are dominant,about 51.47% of the total genera,and there are characteristics which form subtropical to temperate zone transition.(2)The species are mostly composed of Fagaceae,Lauraceae,Anacardiacea...

结果表明(1)该群落区系组成比较丰富和复杂,属于许多属的过渡地带,具有从亚热带向温带过渡的特征;(2)种类组成以壳斗科、樟科、漆树科、卫矛科、榆科、五加科、金缕梅科等为主,但优势种、建群种以温带属为主;(3)种群生活型谱以高位芽占绝对优势,群落垂直结构明显。

The photosynthesis is determined by photosynthesis meterThe results showed that the net photosynthesis rate of Carex lasiocarpa(47.41 μ mol/m/s)is faster than those of other plants in Carex lasiocarpa wetland, Based on the overall sunlight radiation and the efficient photosynthesis radiation, energy utilization rate in radicula was the highest(1.3945% and 3.1879%)While those in spike was the lowest(0.0020% and 0.0046%).

毛果苔草湿地的物理过程观测设在中国科学院三江平原沼泽湿地生态实验站内,用美国CID公司出品的光合仪对典型湿地中几种优势植物的光合能力进行测定;在80℃干燥的植物样品,粉碎后,分别称量约1g左右,用美国公司Parr型氧弹式热量计测定;研究发现毛果苔草湿地建群种中毛果苔草的净光合速率最大,为47.41μmol/m/s。

When applied the spiny eel X chromosome library probes to the chromosomes of the two fish, different signals were distributed: in Siniperca chuatsi, besides some little signals on lot of autosomes, a large bright signal region was detected on the 8th chromosomes, which represented a synteny of spiny eel X chromosomes; but in Channa argus, no distinct synteny was found.

当以刺鳅的生物素标记X文库探针对鳜鱼和乌鳢的有丝分裂染色体进行染色体涂绘后,经过核型分析和统计分析表明,在这两种鱼的染色体上的杂交信号分布是不同的:在乌鳢中,除散在信号外,在其第八号染色体近着丝粒部位存在着一段较大的信号结合区域,应是与刺鳅的X染色体同源的保守同线群,而在鳜鱼中,只有散在信号分布于多条染色体上,没有明显的保守同线群存在。

This paper pointed out that the essential of geoherbs is continuers quantities variation at population level, geoherb's populations are different in gene frequency with the others'; geohersm are quantitative trait loci controlled by multi-gene or combination with multiple-gene and major gene at individual level.

指出道地性的遗传本质在居群水平通常是个量变的过程,它与种内其他非道地药材区别主要表现为居群内基因型频率的改变;在个体水平表现为微效多基因控制的数量遗传,或是微效多基因和主基因联合控制的数量性状。

Finally, courtships with high volatility were found to result in lower level of dyadic adjustment and marital satisfaction. Because couples with unstable courtship pattern, compared to those with stable courtship pattern used more negative coping strategies, they therefore developed passive and negative adjustment patterns and may more easily subject to later marital dissolution.

最后,婚前关系起伏程度越高(包括骤热骤冷型、有惊无险及波折丛生型等三种关系发展类型)的夫妻,婚后在夫妻间相互适应的需要度及困难度越高,婚姻满意度也越低;再加上经常使用消极的调适策略,使得婚前关系发展类型较不稳定的夫妻发展出负面或消极的婚姻适应模式,并成为日后婚姻可能解体的危险群。

These aches and injuries were listed orderly : knee、 ankle、 plantar fascitis、calcaneus、Achilles tendonitis、hip, some happened on high-arched group, some on low-arched group, and some appeared both high-and low-arched group at the same time.

有些伤害常发生在高足弓群、有些则发生在低足弓群,有些则是同时出现在两种足型上。

Karyotypic cluster: By the air-dried method, the numbers and the shape structure of chromosomes in 7 species are compared through the optic microscope.

在第Ⅱ分支中,尼泊尔紫胶虫与普萨紫胶虫的核型似近系数为0.9441,构成姐妹群,这两个虫种与其它5种紫胶虫亲缘关系较远,从群体中分歧出来,形成单独的枝系。

Udensis' genetic variation, its historical causes and dispersal, and references for the explanation of China's geological changes and post-Pleistocene geographical dispersal of plants.

由于七筋菇植物不同细胞型共存,两种细胞型的分布区相邻或重叠,为我们探讨七筋菇种群的遗传结构和遗传分化,多倍体的起源、扩散和演化,及其迁移路线提供了理想的天然研究场所。

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