水生植物

A three- dimensional turbulence model in non-orthogonal curvilinear coordinates is proposed to investigate the impacts of vegetation on channel morphology. The model includes vegetation-induced drag force and vegetation density in the control equations to describe the effects of vegetation on flow structure, and solves sediment continuity equation to compute channel geometry.

本文建立曲线坐标系下的三维湍流模型研究水生植物对河道形态的影响，在水流控制方程中加入植物阻力项和植物密度项来描述水生植物对水动力特性的贡献，通过泥沙质量守恒方程求解河道变形，在适体网格中求解模型的控制方程。

The purification function and mechanism of hydrophytes are briefly analysed;the corresponding countermeasures are put forward;and the existing problems of hydrophyte applications are pointed out also.

本文阐释了水生植物的概念及种类，介绍了水生植物的景观价值及生态价值，简要分析了水生植物的净化作用及机理，提出了相应的治理对策并指出了目前水生植物应用中存在的一些问题。

On the basis of applicational currency, my essay began with hydrophytes' different functional characteristics and tentatively inquired into the application of different species to the construction of Hao Beauty Spot as well as its relevant problems, with a hope to give some reference in establishing a reasonable, beautiful ecological environment of XX, and to build up a theoretical basis for us to introduce suitable rare species of hydrophyte there.

在应用现状的基础上，从水生植物的不同功能特点出发，初步探讨了不同水生植物在濠河风景区建设中的应用及引用问题。希望为建立一个合理、优美的xx生态系统起到借鉴作用，也为xx引种适合的珍贵稀有水生植物奠定理论基础。

Were chosen to bulit a hydrophyte complex pond to purify sewage from Daqinghe, one main inflow river of Dianchi lake.

等4种不同生活型水生植物组成的水生植物塘系统，研究塘中不同植物对滇池入湖河道污水中氮、磷等指标去除效能的差异。

By using Eichhornia crassipes solms as investigating object, the processes of removing naphthalene from aquatic solution by hydrophyte such as adsorption, absorption-degradation etc. were studied. The effect of naphthalene on physiological index of hydrophytes and its mechanism were discussed. The environmental factors influencing remediation efficiency were considered. And the feasibility of utilization of Eichhornia crassipes solms as resource was also presented.

筛选出凤眼莲并以其为主要对象，研究了水生植物净化萘水溶液的吸附、吸收、降解等过程，以及萘对水生植物生理指标所产生的影响及机理，考察了影响水生植物净化效率的环境因素，并对凤眼莲资源化利用的可行性进行了初步探讨。

With the indoor experiment and on-the-spot investigation,it has been seen that the aquative plants for which hygrophyte allount 71%,emerged plants 23%,floating plants 15%,involve 21 families and 37 genuses and 41 species.

结果表明：兰州水生植物共有21科37个属41种，其中湿生类型28种，挺水类型11种，浮水类型2种，分别占水生植物总种类的68%、27%、5%，水生植物的应用频度大多在15左右。

According to the investigation on the local situation of aquatic vegetation in Littoral Regions of Gonghu Lake and Meiliang Bay of the Wuxi Taihu Lake, the species of aquatic vegetation, community forms and biomass were acquired. Then a contrast of vegetation distribution characteristic between the two Littoral Regions was analyzed which induced to the analysis of impact factors. In the treatments designed as varying degree oxidation intimidate, the heavy metal cadmium and the ammonia nitrogen single and compound poisons, the COD sewage cultivate, the plant growth opsonin processes, the effect of the intimidate environment on the submerged plant growth and the physiological biochemistry characteristic was analyzed. The effective method to improve the resist adversity of submerged macrophyte was discussed. The results will give a suggestion to the restoration of the submerged macrophyte, the efficiency and reconstruction in Lake Ecosystem.

通过对无锡太湖两重要湖湾贡湖和梅梁湖湖滨带沿岸浅水区水生植被现状进行调查，了解了水生植物的种类、群落组成及生物量，对两湖湾湖滨带沿岸浅水区水生植被分布特征进行了对比，并进行了影响因素分析；通过不同程度的氧化胁迫、重金属镉与氨态氮单一和复合作用、高COD生活污水胁迫培养、植物生长调节素处理，分析胁迫环境和壳聚糖各自对沉水植物生长的影响及作用机理，探讨提高沉水植物逆境抗性的有效措施；探寻沉水植物修复的理论依据和有效途径，为急待进行水生植被恢复的湖泊提供依据和建议。

The single-celled phytoplankton included 116 inshore wide distribution species, 31 inshore warm-water species and 26 inshore temperate species, and the vascular plants were of 6 ecological groups, i.e., halophtes (24 species), hydrophtes (22 species), amphiphytes (35 species ), mesopllytes (103 species), zerophytes (6 species), and psammons (4 species). Halophtes, hydrophtes, and amphiphytes were the edificators and dominants, reflecting the azonal feature of the wetland vegetations. The vascular plants were divided into 5 life-forms, including 20 phaenerophytes, 4 chamaephytes, 54 hemicryptophytes, 48 geophytes and 68 therophytes, among which, hemicryptophytes and geophytes accounted for 52.58%, reflecting the relatively important function of cold and wet climate and local water-accumulated bottomland environment on the vascular flora formation.

区系中的单细胞浮游藻类包括近岸广布种116种、近岸暖水种31种、近岸温带种26种；维管束植物被划分为6大生态类群，包括盐生植物24种、水生植物22种、湿生植物35种、中生植物103种、旱生植物6种、沙生植物4种，保护区内湿地植被的建群种、优势种均为水生植物、湿生植物或盐生植物，反映了湿地植被的隐域性；维管束植物按照生活型划分，有20种高位芽植物、4种地上芽植物、54种地面芽植物、48种地下芽植物和68种1年生植物，其中地面芽植物、地下芽植物占区系植物总种数的比例较高，占52.58%，反映冷湿气候和局部低洼积水环境对区系的形成起较重要作用。

The environmental factors influencing remediation efficiency were considered. And the feasibility of utilization of Eichhornia crassipes solms as resource was also presented.

筛选出凤眼莲并以其为主要对象，研究了水生植物净化萘水溶液的吸附、吸收、降解等过程，以及萘对水生植物生理指标所产生的影响及机理，考察了影响水生植物净化效率的环境因素，并对凤眼莲资源化利用的可行性进行了初步探讨。

Three kinds of hydrophytes, Veliveria zizanioides Nash, Eichhornia crassipes, and Oenanthe javanica DC. were used to investigate enrichment ability of nitrogen and phosphor at the different TN levels with TP constant. It revealed the absorption ability of aquatic plants and purification ability of aquatic macrophytes-rhizosphere microorganisms system respectively in aquatic macrophytes-microorganism system for water purification.

研究了不同TN浓度下香根草、水葫芦、水芹等水生植物－微生物系统富集N、P的能力，揭示了水生植物－微生物系统中水生植物的吸收作用和根际微生物系统对净化水质的作用，对水生植物根际微生物系统相应微生物的数量做了定量的统计。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失