浮游植物

Compared to CK, the rice-fish ecological system increased its density and biomass, decreased the predominance of Bacillariophyta and Cyanophyta, and increased the diversity index.

稻鱼共作显著增加稻田水体浮游植物的密度和生物量，降低硅藻和蓝藻的优势度，增加绿藻和裸藻的优势度，提高了稻田水体浮游植物多样性指数。

Followed successively by Bacillariophyta, with 31 species of 18 genera, taking up 19.38%; Euglenaphyta, with 15 species of 3 genera; Cyanophyta, with 7 species of 4 genera; Cryptophyta, with 3 species of 2 genera; Pyrrophyta and Chrysophyta, with 2 species 2 genera; Xanthophyta, with 1 species 1 genera.

浮游植物是水生态系统中的初级生产者，是水生生物群落结构中的重要组成部分，是水环境质量的重要指示生物，浮游植物的种类组成和数量变动都可以反映水质变化的情况。

There are 370 kinds of plants, 194 kinds of insects, 26 kinds of fish, 17 kinds of amphibians and reptiles, 296 kinds of birds, 17 kinds of mammals, 201 kinds of phytoplankton, zooplankton 174 kinds, 23 kinds of benthic animals.

区内有植物370种，昆虫194种，鱼类26种，两栖爬行类17种，鸟类296种，兽类17种，浮游植物201种，浮游动物174种，底栖动物23种。

Wanfenghu reservoir has been polluted seriously, and waters are in a severe eutrophication condition. Whether physico-chemical indexes or biological indexes appraisal, it proved that the water quality of Wanfenghu is between IV-V. Wanfenghu contains high TN and TP which are 5 to 6 times of the national standard content, and the quantities construction of phytoplankton communities is deeply disequilibrium, the Cyanophyta and Charophyta occupying overwhelming

万峰湖水库已经受到了严重污染，水体处于严重富营养化状态，其水体中的溶解氧的三季变化范围在2.92-5.3mg·L之间、化学耗氧量三季平均值为34.77 mg·L~(-1)、总氮三季平均值为2.5 mg·L~(-1)、总磷的三季平均值为0.35 mg·L~(-1)、叶绿素a含量的三季平均值为23.64 mg·m~(-3)，以上各指标表明万峰湖水库水体处于Ⅳ-Ⅴ类水质；无论从浮游植物的群落数量上还是浮游植物种类组成上看，蓝藻和绿藻都占绝对优势，而其它各种藻类极少，是典型的蓝-绿藻型水

They also showed that large Cladocera size is more important than their number for efficient phytoplankton control and when cladocerans are large enough, they can considerably restrain phytoplankton growth, including bloom-forming cyanobacteria, even when submerged vegetation is not restored.

同样，它们也显示了大型枝角类的体型相对于它们的数量就对浮游植物的有效控制上意义更大。当枝角类足够大时，它们能够限制浮游植物的生长，包括蓝藻的爆发，即便当沉水植被没有及时恢复。

The dominant phytoplankton species outside and inside the bay were Cylindrotheca closterium and Skeletonema costatum, while the samples in the harbor had Skeletonema costatum, Eucampia zodiacus, and Chaetoceros curvisetus as the dominant species.

湾外和湾内站位的浮游植物组成相似，优势种为新月柱鞘藻和中肋骨条藻，港口浮游植物优势种类为中肋骨条藻、浮动湾角藻和旋链角毛藻。

One hundred and fifteen species were identified, among which coastal eurythermic species were predominant, showing obvious characteristics of subtropical population fauna. The results showed that the average abundance of phytoplankton in Shacheng Harbour was 3113.24 ind·L-1. The abundance was higher in the inner bay than that in the outer bay in horizontal distribution. The surface abundance was a little higher, but there was no significant gradient in different water layers in vertical distribution. Shannon-Wiener diversity index, Margalef richness index, Pielou evenness index and Simpson dominance index were 2.390, 2.650, 0.726 and 0.306, respectively.

结果表明，该次调查共出现浮游植物115种，种类以沿岸广温广盐性种为主，并呈现较为明显的亚热带海湾种群区系特征，浮游植物的平均丰度为3 113.24 ind·L-1；水平分布上，呈内湾高于外湾的格局；垂直分布上，表层丰度略高，不同水层的分布梯度不明显；Shannon-Wiener多样性指数、Margalef丰富度指数、Pielou均匀度指数和Simpson优势度指数分别为2.390、2.650、0.726、0.306。

Change of POC and PON are mainly controlled by phytoplankton growth and death.

当水华消退，大量死亡的浮游植物沉降。POC和PON的变化主要由浮游植物的生长和死亡过程控制。

Results showed that there were 73 species of phytoplankton belonging to 6 phya, in which scenedesmus and diatom were predominant.

试验区河道共检出浮游植物6门73属，通过对数量进行比较，明确了苏州城市河道以绿藻－硅藻为优势种的浮游植物分布特征。

According to the aquatic ecosystem investigations in October of 2003 and April of 2004, the composition and quantity of phytoplanktons after impounding of the Three Gorges Reservoir were studied. We discussed the influence of water dynamics condition, water nutrient level on the phytoplankton components and quantity.

根据2003年10月和2004年4月的水生生物调查，对三峡库区二期蓄水后的浮游植物组成与分布变化进行研究，探讨水力学与营养盐条件变化对库区浮游植物结构与数量的影响。

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如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。