草原

In order to find the vegetable niche pattern in arid and semi-arid grassland region, the niche breadth and niche overlapping in Yanchi county of Ningxia in 2006 and 2007 are measured by means of Levins niche breadth and Pianka niche overlapping indexes in the enclosed grassland.

运用Levins生态宽度指数及Pianka生态位重叠指数，对宁夏盐池人工封育草原2006年和2007年植物生态位宽度及生态位重叠进行计量，以了解干旱半干旱区草原植物生态位格局。

All its many-hued expanse caught the sun\'s last flaming reflection and darkened gradually, so that the dusk could be seen closing over it, painting it dark-green; the vapours thickened: every flower, every herb breathed forth its scent, and the whole steppe was redolent.

它一望无际的万紫千红尽情吸收了太阳的余辉，渐渐黯淡下来。薄暮降临草原，染上一层黛色；雾霭渐渐沉厚：草木吐芬，整个草原弥漫着香气。

Comparative study on two levels of population and modules of mutualspecies in the two stations demonstrates that feature index tend to diminish suchas height,tussock amplitude,size,number,density and dry weight;and thegrowth analysis index incline to increase such as RGR、ULA、chlorophyllcontent and effectiveness of plant multi-leaves of the populations and DULA、DUMR、DAGA and DRGRa of the modules;and the dynamic curves of thepopulations and the modules also tend to steadily increase along with thetemperature ascending,heat accumulation and combination between water andheat in moderate-temperature steppe from fierce fluctuation alongside naturalprecipitation in warm-temperature steppe,illustrating that the transformabletendency from increasing the numbers of tussocks and tillers in order to expandthe resource range to seize in warm-temperature steppe to steadily improve drymatter production function of the populations and the modules in moderate-temperature steppe.

两个不同热量型研究站点共有种种群与构件两个水平的比较研究表明：随纬度增加和气温降低，种群与构件高度、丛幅、大小、数量、密度和干重等特征指标趋于降低和减少，而种群RGR、ULA、叶绿素含量和植物多叶性与构件DULA、DUMR、DRGR和DRGRa等生长指标则趋于增加，种群与构件的生长动态曲线也从随天然降水而剧烈波动趋向于随气温升高、热量积累和水热配置状况而稳定增长，说明各共有种从暖温型草原区增加植物种群与构件的大小和数量以扩充资源利用范围向中温型草原稳定地提高种群与构件的干物质生产性能的方面转变的趋势；同时，物质与能量的分配也从较多地投资于繁殖器官产生大量后代以适应未来降水的不可预期变化趋向于同化系统的构建和干物质生产效能的提高以抵御低温和干旱对物种生存的威胁，充分显示出不同温度条件及其水热组合对植物种群形态结构和生长繁育模式的显著影响及其响应特征。

The vast Hulun Buir Grassland is one of the four largest natural steppes in the world.

广阔的呼伦贝尔草原是四个世界上最大的天然草原之一。

The vast Hulun Buir Grassland is one of the four largest natural steppes in the world.

广阔的呼伦贝尔草原是世界上四个最大的天然草原之一。

Some people say that because of global warming, forests around savannas may start taking over the savannas, and some say the opposite.

有些人说，由于全球气候变暖，稀树大草原周围的森林可能开始取代稀树大草原，也有的人提出相反的看法。

It could be a savanna blazing star, but there aren't any savannas here, so it couldn't be that.

它可能是热带稀树大草原的星形花植物，可是这里没有热带稀树大草原，那么，它就不可能是那种植物。

They are found most often in savannas, grasslands, and forests but occupy a wide range of habitats, including deserts, swamps, and highlands in tropical and subtropical regions of Africa and Asia.

他们发现，最常在稀树草原，草原，森林，但占据一个范围广泛的栖息地，包括沙漠，沼泽，高原，在热带和亚热带地区的非洲和亚洲。

Spotted hyenas are found in grasslands, woodlands, savannas, subdeserts, forest edges and mountains.

环境 根据报道发现有草原，林地，草原， subdeserts ，森林边缘和山区。

To the untrained eye that is unable to distinguish one plant from another, Tibetan rangelands, especially in the vast northern steppes, can appear boring and lifeless, particularly when majestic mountains dominate the horizon.

对于没有受过专门训练，无法辨别不同植物的人来说，西藏草原，尤其是北部广袤的大草原，是枯燥乏味的，尤其是当放眼望去，满眼可见的只有高耸的山脉的时候。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。