沙地

Picea mongolica is a rare and endangered species in the world, which is conferred to the tide of "biology gene bank" and "living fossil", and mainly distributes in Baiyinaobao sandy land of Chifeng.

沙地云杉是世界上罕见的树种，也是世界珍稀濒危树种之一，有&生物基因库&和&活化石&之称，集中分布在赤峰市白音敖包沙地。

Caragana intermedia is a psammophilous shrub and one of the commonly occurred species in fixed and semi-fixed sand dunes in Otindag Sand Land and MU US Sand Land.

中间锦鸡儿是浑善达克沙地和毛乌素沙地固定和半固定沙丘上常见的一种沙生灌木。

In this thesis, the adaptive strategies of the psammophyte plants in Otindag Sandland to the sand moisture, sand burial and environmental heterogeneity are investigated using both field and greenhouse experiments.

本文应用实验生态学方法研究了沙地植物对水分、沙埋和养分异质性环境的生态适应对策。浑善达克沙地属于半干旱区域。

Ulmus pumila open forest s have extensive distribution in the Otindag Sandy Land, which are important for lightening sandstorm.

榆树是浑善达克沙地的优势种，榆树疏林在浑善达克沙地成缀块状分布，对于该区域生态系统的整体性和多样性维持以及防风固沙等方面具有重要意义。

Ulmus pumila L. var. sabulosa is an indigenous plant in Hunshandake sandy land.

沙地榆是浑善达克沙地的乡土树种。

Surface-consistent deconvolution using variable prediction step, and suppression of sand dune ringing;2. Spatiotemporal distribution of moisture content in sand dune s of the unirrigated forestation along the southern marginal zone of Gurbantunggut Desert;3. The concepts of sand land, sand dune and desertified land etc.

在实地调查和多年定位研究的基础上，根据目前沙漠化过程研究的需要，介绍了沙地、沙丘、沙漠化土地等相关概念及其主要区别，阐述了沙地、沙丘、沙漠化土地类型的划分标准以及类型互换使用中应该注意的问题；通过分析影响沙漠化发展方向和过程的关键因素，建立了沙漠化正、逆发展过程的地面判别指标体系，并讨论了不同类型沙丘的主要来源、发展方向及转换过程的判别方法。

Artemisia intramongolica is a kind of dominant shrub on sandy land in the typical grassland area o our country. It has been suitable to the hot and xeric habitat on sandy land for a long time and has formed series of characteristics that are adaptive to its habitat.

褐沙蒿是分布于我国典型草原带沙地中的优势灌木，由于长期生长在草原区沙地高温、干旱的环境中，形成了一系列与环境相适应的生物学特性。

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。

Blond children scoot around on bicycles, elderly German couples take their evening constitutionals along the waterfront and teenagers who look surprisingly like Californiasurfer dudes guide tourists through an utterly un-African extreme sports scene: sand boarding, sand sledding, sand skiing and sand sailing - none of which includes a dune lift, so all of which demand repeated uphill slogs through the sand and the inhalation of lungfuls of Namibian dust.

白肤金发的孩子们疾速地骑着自行车到处跑，年龄大一点的德国情侣们在河边度过一个又一个花前月下，那些十几岁的年轻人，看起来不可思议地像极了加利福尼亚人，他们则承担起东部旅行者们的导游，带领他们参看那些完全脱离了非洲格调的极限运动：滑沙板、滑沙橇、沙地滑雪、沙飘—这些运动中没有任何一个使用沙丘攀登设备，因而它们所要求的是在沙地上的反复攀爬跋涉并吸入满肺的纳米比亚尘土。

Species diversity in three types of vegetation were relatively higher in August, and lower in May. Species diversity of vegetation was highest in the reconverted grazing land, lower in the semi-fixed dune land, and lowest in the natural reconverted farmland. The stability of vegetation in the reconverted grazing land was relatively high and strong buffering function to changing environment among three types of vegetation.

放牧自然恢复地植被的物种多样性相对较高，半流动沙地相对较低，退耕自然恢复地最低，这说明相对于半流动沙地和退耕自然恢复地，放牧自然恢复地稳定性相对较高，对环境波动的缓冲功能强。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。