植物种类的

The National Orchid Garden promises sprawling orchid displays, water features, and an exotic bromeliad collection from Central and South America.

有一个植物种类密集的原始小森林和一个胡姬花园，反映了赤道地区植物的多样性。

With a study of plant community succession on 5 stocking rates,herbage utilizational efficiency and risk-benefit balance,it is suggested the sustainable development should follow:(1)no degradational principle of rangeland,(2)the maximum herbage utilizational efficiency,(3)the risk-benefit balance,When stocking rate was no more than 2.67 sheep/hm2,the proportion of grasses and plant biodiversity index and evenness were increased based on Artemisia frigida and short-grass rangeland.

草地畜牧业可持续发展的三大生物经济原则为草场不退化原则、最大生物学效率原则和风险-利润权衡原则：(1)草场不退化原则。在冷蒿小禾草退化草原上，暖季期间1.33～2.67羊/hm\+2的放牧率下可使其发生恢复演替，禾草的比例增大，植物多样性指数和均匀度指数均有所提高，从而达到利用式改良的目的；相反，若继续重牧或过牧，放牧绵羊喜食的植物种类将进一步减少，植物多样性指数也有所降低。

Most of the secondary forests in Zhuhai are dominated by the species of Lauraceae, Euphorbiaceae, and Theaceae. There are also many tropical taxa of Rubiaceae, Myrtaceae, and Moraceae.

珠海市的森林群落以樟科、大戟科和山茶科植物最为丰富，茜草科、桃金娘科和桑科等热带植物种类也比较丰富。

This thesis investigates the main landscape factors in residence and emphasized on planning landscape, investigating、 analyzing and summering their genenal level of virescence、 the variety of the plant、 the proportion between evergreen and broad-leaved trees、 the charaters of planting in different districts and on this basis, this thsis puts forward the basic principle, main guide line、 planning variety and design mode of plants and provides scientific foundation for the ecological development and construction of residence.

在此基础上，以作者工作所在地上海市为研究对象，选取绿化景观营造较为成功并具一定知名度的典型居住区，如高档居住区&海源别墅一期&、&西郊宾馆别墅四期&、&月湖山庄一期&，公寓居住区&上海知音&、&上海宏润花园&、&大华清水湾二期&等，对其主要的景观要素进行实地调研，并以植物景观为重点，对其总体绿化水平、应用的植物种类和配植手法、常绿和落叶树种的比例、分区种植特点进行调查、分析和总结，并据此提出了上海市不同居住区绿色景观环境建设的基本原则、主要指标、树种规划和植物配植模式，为居住区的生态化建设发展提供科学依据。

Some water samples from intakes and outlets of 3 wetland pond beds growing Phragmites communis Trin, Typha angustifolia and Cyperus alternifolius were respectively taken for monitoring and contrasting 5 main water quality indexes including dissolved oxygen, chemical oxygen demand, biochemical oxygen demand in 5 days (BOD5), total nitrogen, and total phosphorus month by month all year around, so as to discover influences of different plant species on water purification efficiency.

摘 要：通过对成都活水公园人工湿地中的3种优势挺水植物所在塘床进出水口的5个主要水质指标：水中溶解氧（dissolved oxygen， DO）、化学需氧量（chemical oxygen demand， CODcr）、5日生化耗氧量（biochemical oxygen demand in 5 days， BOD5）、总氮（total nitrogen， TN）、总磷（total phosphorus， TP）的全年逐月对比监测，探索不同植物种类对污水净化效率的影响，并对湿地中不同植物塘净化效率产生差异的原因作了较全面的分析讨论。

The evenness index are highest, and the predominant index is lowest. The overgrazed scrub and grass clump has poorest vegetatio n

扰的明油子灌草丛植物种类和节肢动物种类比较丰富，但节肢动物群落优势度最高而均匀度最低；经受或存在放牧干扰的明

But the various plants with many stalks, growing from one or several roots, the different kinds of grasses, the climbing plants and the creepers spring all from seed or from slips.

但是，各种植物有许多秸秆，从一个或几个根源，不同种类的草，在攀援植物和食人族春季全部来自种子或从单。

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。

Although no significant difference was found in seasonal food usage by muntjacs, seasonal difference in food selection was detected.

不同季节中赤麂取食的植物种类没有明显差异，但是在食物种类的选择方面存在季节性差异。

Although the dominant species were all green algae in winter and spring,there were some differences in species.

浮游植物相似性指数测算结果显示，冬季和春季的浮游植物种类组成差异很大，相似性指数仅为030。

I am sure after a few weeks of adaptation and familiarization I will have no difficulty in functioning on a daily basis in an English speaking society or in participating fully in graduate studies.

在大学的三年的学习生活不仅给予我自身的充实，更重要的是磨练和培养了我较强的自觉能力和严谨，踏实的作风以及不怕困难的精神，对未来充满了信心！

As the first volcanoes erupted, one of the gases that bellowed out was steam.

在第一批火山喷发时，喷出的气体之一就是水蒸汽。