优势种

Wide expanses of turf grass are sterile habitats attracting less desireable "generalist" species, such as feral pigeons, starlings, cowbirds, and grackles, all of which compete with our native songbirds for food and nesting spots.

大面积的草皮是贫瘠而缺乏生产力的。只能吸引一些&俗鸟&，比如鸽子，八哥，白头鹎啥的。这些优势种的鸟类占据你的庭院，会阻碍美丽的小鸟到来。（呵呵这个作者搞鸟类歧视，我不大赞成，八哥啥的也挺好的——viccent

Development and application of thermo reactors dominants at present and will do so in a long time to come, while technology research on fast reactors and fusion will be carried on concurrently.

发展与热核反应堆目前优势种申请，并会做很长的时间来临时，而对快堆技术和融合的研究将同时进行。

Riding crops, paddle, and floggers are good choices for newer dominants.

骑作物，小棒， floggers是好的选择较新的优势种。

The results of the study on the plant communities among the stages of regressive succession indicated that the dominants and components of the communities changed with the aggravation of degradation, and the plant communities changed from the grass family-dominant community to the forbs-dominant one.

： 通过对高寒矮嵩草草甸不同退化演替阶段植物群落的研究显示，随着退化程度的加重，群落的组成和优势种等发生了很大的变化，植物群落从以禾本科为主，向以杂类草为主的群落演替。

The fall-down stems chiefly distribute at the middle of slope and both side of the ridge. Their appearing frequency is in positive ratio to slope; The ones at middle of the slope are mainly shadow-intolerant tree species of small size, those at the side slope of ridge are mostly the big-sized dominant species in the community.

倒伏木主要分布在海拔1200～1800m之间坡面中部和顶脊两侧，发生频率与坡度成正比；坡地中部以中、小径级阳性树种为主，山坡顶脊两侧的倒伏木则多为大径级的群落优势种。

Luozha River is a first branch of Lancang River in its middle section. A less known deciduous monsoon forest was recently discovered on the dry-hot banks of Luozha River. The deciduous monsoon forest is 15-20 m tall with Lannea coromandelica Colona floribunda. Mallotus philippensis as the dominant tree species, and Microstegium ciliatum Eupatorium odoratum、Ageratum conyzoides are the dominant species in the shrub-herb layer.

对罗扎河下游鲜为人知的落叶季雨林进行了群落生态学研究，结果表明：罗扎河下游落叶季雨林群落高度在15~20m之间；群落乔木层以厚皮树、一担柴、粗糠柴、毛果扁担杆、灰毛浆果楝等树种为优势种；灌草层以刚莠竹盖度最大，其余如飞机草、藿香蓟、蹄盖蕨Athyrium sp。

Leymus chinensis is the dominant forage grass in Songnen plain of China.

羊草是我国松嫩草原的优势种，其营养繁殖能力强，是典型的克隆植物，并有较强的耐盐碱性。

Under the suitable condition, it could form a community of mono-dominant species and double-species with the dominant species P.

在适宜的条件下，可形成以芦苇为优势种的单优群落或双优群落。

The dominant and co-dominant species in shrub and herb layers were mostly helophytes and hygrophytes. With decreasing latitude, the helophytes and hygrophytes decreased or disappeared, while mesophytes increased.

研究区沟谷冻土湿地植物群落的灌木层和草本层的优势种和共优种多为适应湿地环境的沼生和湿生植物，随着纬度的减小，喜冷湿环境的沼生和湿生植物种类逐渐减少，甚至消失，而耐旱的中生植物的比重则逐渐加大。

Tilapia is the dominant species in most lakes of South China, and its food includes phytoplankton in open water habitats and periphyton in substrate-surface habitats.

罗非鱼是我国南方很多水体的优势种，食物包括敞水生境的浮游植物和基质表层生境的附着藻类等。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。