查询词典 populations

Spatial patterns of main woody plant populations are aggregative, Ulmus macrocarpa, Acer mono, Ulmus pumila populations in some communities are random.

主要木本植物种群的分布格局大多为集群型，只有部分群落中大果榆、色木槭及家榆种群为随机分布。

Different from the sole-population evolution, the multi-population evolution partitioned the initial population into umpty sub-populations. Each sub-population evolved independently according to certain schema. In proper situation, the sub-populations would exchange information among themselves, to maintain the population diversity.

与单一种群进化不同的是，多种群进化将初始种群划分为若干子种群，各个子种群按照一定的模式独立进化，适当的时候在子种群之间交换信息，从而维持种群的多样性。

In all twenty populations, the genetic diversity for Unio douglasiae is the largest, Solenaia oleivora takes the second place, and the percents of RAPD amplified polymorphic loci for both populations are all larger than 70%.

短褶矛蚌和河无齿蚌种群的多态位点百分率低于40%，其中短褶矛蚌的Sh~on遗传多样性指数为0.1891、群体内的遗传距离为0.0708，在所有种群中均最小。

A dendrogram constructed by an unweighted pair group method of cluster analysis showed that populations from Panan constructed one branch and separated from other populations.

根据POPGEN软件计算得到的群体之间的遗传距离进行聚类分析，结果显示浙江的各栽培群体有较近的遗传关系，与其他群体已存在遗传分化。

Or 10.40％ of the variation was partitioned among voltinism populations. The Nm (4. 3065) showed that there was to some extent gene flow among three voltinism populations. The average Nei's genetic identity was 0.9637. The genetic distance between V1 population and cultivated V1 population was the biggest (0.0438) and the less was 0.0370 between V1 population and V2 population.

Nei基因多样性指数也是2化群体最大（0.2631），1化群体次之（0.2485），培育1化性群体最小（0.1709），3个群体之间的遗传分化系数为0.1040，即3个化性群体之间的遗传变异占到总遗传变异的10.40％。3个化性群体之间的基因流达到4.3065，表明化性群体间存在着一定程度的基因交流。3个群体之间的遗传一致度为0.9637，遗传距离以培育1化性群体与1化性群体最大（0.0438），以1化群体与2化群体最小（0.0370）。

The genetic diversity of Wudu,Wenxian and Qingcheng populations was much higher than that of Huixian,Chengxian and Xihe populations.

武都、文县和秦城种群遗传多样性较高，徽县、成县和西和种群相对较低。

The F〓 generations self-pollinated to produce F〓 populations and backcrossed with susceptible parents to produce BC〓F〓 populations.

南方锈病高抗自交系齐319分别与高感自交系鲁原92、黄早4、478、340、9801杂交，F〓自交及与感病亲本回交。

This study has examined cell populations from human fetal femurs in comparison with adult-deried mesenchymal cell populations.

本研究检测了胎儿股骨细胞群，并与**间充质细胞群进行了比较。

The results showed that Liquidamba formosana, Quercus acutissima, and Quercus fabri populations had the dominant positions in the forest community of Purple Mountain Area of Nanjing. During the growth process, the mortality of L. formosana, Q. acutissima, and Q. fabri were higher in low age. After entering into the middle-age stage, the upper space was occupied by oak and L. formosana population all died. The mortality of Q. acutissima and Q. fabri populations were increased with the increasing of diameter class. L. formosana population in the Purple Mountain Area of Nanjing belonged to be the typical growing population and Q. acutissima population was a decreasing population. Q. fabri population belonged to be the growing population on the whole, but the diameter class in middle parts was incomplete and the population was difficult to be renewed. Among the studied quadrate, only one dominant population showed an aggregated distribution and other dominant species showed the random distribution. Either, all the dominant species in all the quadrates presented random distribution.

结果表明，枫香种群、麻栎种群和白栎种群在南京紫金山地区森林群落中占有优势地位；枫香种群、麻栎种群和白栎种群在其生长过程中，在低龄时期，死亡率都较高，进入中龄期后，由于上层空间都被栎木占据，枫香种群全部死亡，而麻栎种群和白栎种群的死亡率则随着径级的增大而增大；南京紫金山地区枫香种群属于典型的增长型种群，麻栎种群属于衰退型种群，白栎种群总体上属于增长型群落，但中间径级不完整，种群更新较为困难；在所研究的每一个样方中，一般只有一个优势物种呈聚集分布，而其他优势物种呈随机分布，或样方中所有优势物种都呈随机分布。

Human populations can increase in size if only other plant and animal populations decrease in size.

根据生态学原理，当其他物种数量减少时，人类数量就会增加

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。