荒漠

The Central Valley of California could become the new home of for plants now found in the Sonoran desert of Mexico.

加州的中央峡谷可能成为现今在墨西哥桑诺伦荒漠发现植株的新定居点。

The plants on desert steppe exhibited the strongest xeromorphic characteristics, and 3 species of Stipa on the desert steppe had abundant genetic polymorphism.

荒漠草原区的植物是旱生程度最强的一类草原群落，该区的3种针茅具有丰富的遗传多态性。

By the method of polymerase chain reaction-single strand conformation polymorphism, this paper studied the genetic polymorphism of exon 1 and intron 1 in the aquaporin gene of seven species of Stipa in the meadow steppe, typical steppe, and desert steppe of Inner Mongolia.

以分布于内蒙古的草甸草原、典型草原、荒漠草原上的7种针茅属植物为材料，利用聚合酶链反应－单链构象多态性方法，分析了水孔蛋白基因的外显子1和内含子1的遗传多态性。

From the appearance characteristics of plant community,the synusia structure of plant community in Minqin desert grassland was composed of simple herbaceous and shrub layer,and individual plants was dwarf,small crown,low biomass,with an average altitude of 0.60 m and lower than 1.00 m~2 crown;except for Nitraria,Zygophyllaceae and Caragana,the fresh weight of per plant biomass of most plant were below 1000 g / individual.

8从植物群落的外貌特征来看，民勤荒漠草地各植物群落的层片结构是由简单的灌木层和草本层组成，且植物个体矮，冠幅小，生物量低，平均高度在0.60m以下，冠幅在1.00m~2以下；生物量除了白刺、泡泡刺和柠条外，大多数植物的单株生物量鲜重都在1000 g/株以下。

Desert eco-system ; oasis eco-system ; annual synusia ecological adaptive mode

荒漠生态系统；绿洲生态系统；一年生植物层片；生态适应模式

It is easy to fall into a practical craziness of utopianism according utopian social ideal, resulting to despotism and autarchy necessarily, while it will also deprive human beings of social ideal with transcendentality, ultimateness and comprehensiveness to resist utopianism completely, displaying a 'desert' of mediocre and despairing.

按照乌托邦的社会理想来建构现实社会，容易使人们陷入乌托邦主义的实践狂热中，专制与独裁是其必然结局，然而，完全拒斥乌托邦又会使人类的社会理想失去超越性、终极性和总体性，展现出来的就是一片平庸不堪和绝望无计的&荒漠&。

Condensation water plays an important role in sustaining the vegetation and eco-environment in the desertification areas. The development of condensation water may be influenced by day and night trends of temperature and moisture in the vadose zone.

凝结水对维持荒漠地区的植被生态环境起到至关重要的作用，而凝结水的形成机制又反映在包气带地温与含水量的昼夜动态过程中。

Xeromorphic structures of various types of plants in deserts.

我国荒漠不同生态类型植物的旱生结构。

But at the same time,itexisted in the fact that the water environment was amended,showingthat many lakes and ponds such as Hong Jiannuo Lake appearing andexpanding in the end of Qing dynasty.4.The vegetation in Mu Su Desert passed through several phases inhistorical times,the main phases are:the species composition ofvegetation community was gradually simplified;xeromorphous and sandyplant increased;the status of desert vegetation rose evidently.However,the change of vegetation zonation means that forest plainchanged into drought plain did not occur.5.The main modality of Mu Su Desert land degenerating has beendesertification,it had occurred before human activities intervenedintensively.Two-thirds of land has been desertification at variousdegrees.

但与此同时，也存在着局部的水环境改善，突出表现为红碱淖等湖沼在清末民初的出现和扩大。4、毛乌素沙地的植被在历史时期经历了群落种类组成渐趋简单、旱生沙生资源植物增加、荒漠植被地位明显上升等变化，但是并不存在由森林草原到干草原的地带性植被变化。5、沙漠化是毛乌素沙地土地退化的主要表现形式，在人类活动强烈干预以前就存在着，秦汉以来，有大约2／3的土地发生了程度不同的沙漠化。

Forty years of re-vegetation, mainly by xerophytic shrubs Artemisia ordosica Krasch and Caragana korshinskii Kom, in the Shapotou Desert Experimental Research Station has established a dwarf-shrub and herbaceous cover on stabilized sand dunes.

：在草原化荒漠带沙坡头地区，利用草方格沙障并栽植灌木柠条和半灌木油蒿对流动沙丘进行固定，经过40a的演变，逐渐形成由矮灌木与草本植物覆盖的固定沙丘景观。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。