沙丘

The sand dune landscape was not caused by tectonic movement,but by wind and different erosion,and the peat layers were formed in limnological environment in the wind-accumulating dune area.

该区沙山地貌并非新构造运动所致，属差异侵蚀作用的结果，泥炭层由风积地区沙丘间湖沼沉积形成。

In arid and semi-arid zones, appearance of microbiotic crusts will change the surface condition of sand dunes greatly.

在干旱、半干旱地区，微生物结皮的出现完全改变了沙丘表面状况。

Intercepted precipitation and enhanced evaporation by microbiotic crusts were the two main factors threatening the water reservoir in sand dunes.

微生物结皮拦截降雨和提高蒸发，是微生物结皮威胁沙丘土壤水库的两个重要因素。

Using the survey data of several indexes as well as field experimental data of soil hydrology of microbiotic crusts in artificial vegetation-fixed sand dunes in Shapotou area, the impacts of microbiotic crusts on soil hydrological processes which included the penetration, interception and evaporation processes of precipitation were examined, and their mechanisms were also studied. The security problem of vegetation-fixing system due to the changed soil water environment in fixed sand dune area was analyzed further.

本文在上面的立意下，我们对沙坡头人工植被固沙区对微生物结皮的若干指标进行了详细的调查和试验，并安排了一系列微生物结皮土壤水文过程试验，从不同的角度揭示了微生物结皮在降雨渗透、拦截和蒸发过程中的作用，及其对降水在沙丘土壤剖面中的水分分配过程和格局的影响，并进一步分析了微生物结皮对固沙区土壤水环境的影响和植被固沙体系的安全问题。

Once upon a time there were four little Rabbits, and their names were ——Flopsy, Mopsy, Cotton-tail and Perter.

从前有四只兔子，它们名叫——耷拉，毛毛，棉尾巴和彼得。它们和妈妈住在一堆沙丘里，在一棵巨杉树的根下面。

FOR all its paradisal waters, golden dunes and swanky "eco-lodges", life in Kenya's coastal district of Kiunga, just a few miles from the border with Somalia, is hard.

对比天堂般的水乡、黄金般的沙丘、豪奢的生态旅馆，生活对于沿海的基温加地区的人来说只有艰辛。

They were raised for their meat and allowed to roam free amid the dunes and piney forests that today are public parkland and nature preserve.

它们可以在沙丘和松林里随意溜达，它们先前出没的地方就是现在的公共稀树草原和自然保留地。

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。

Results showed that total vegetation coverage, herbaceous coverage, and species richness were all decreased, and perennial species gradually gave place to psammophyte annuals, shrubs, and semi-shrubs from gentle slope hilly ridge, through saline bottomland and fixed and semi-fixed dune, and to shifting and semi-shifting dune.

结果表明，从缓坡丘陵梁地，经盐化丘间低地、固定半固定沙地到流动半流动沙丘，植被总盖度、草本植物盖度、物种丰富度均呈下降趋势；植被组成中多年生草本植物逐渐减少，一年生草本植物及沙生灌木、半灌木逐渐增加。

At first,ecological mat can effectively reduce soil temperature of the soil layer from 0 cm to 15 cm,in detailed,the average daily soil temperature can decrease 2.06℃ to 4.56℃,which is benefit to reduce soil evaporation in high temperature;During the rainless period,the soil moisture content covered by ecological mat is much higher than mobile sand,especially,the soil moisture content of the layer form 0 cm to 15 cm always keep ...

首先生态垫能够显著降低沙地0~15 cm的土壤温度，日均温可降低2.06~4.56℃，有利于沙地高温条件下减少土壤蒸发；在连续无降雨的情况下，生态垫下各层次的土壤含水量都高于流动沙丘裸地，尤其是15~30 cm含水量相对稳定，人工植被建立后，其保存率、生长量较流动沙地均有较大幅度的提高。

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。