水上丹霞千万年

艄公艄婆的竹竿划水声、叩击岩壁发出的声音和上清溪的潺潺水声此起彼伏,打破了峡谷中的寂静。偶尔阳光钻入峡谷两壁间,照射到溪水上,再反射到岩壁上面,光影晃动,仿佛红色岩壁上在流淌着溪水。偶尔有不知名的小乌的呜叫声,在峡谷中回荡。     

自由自在水中游

鸭科是鸟纲雁形目中的一个科,也是游禽类最大的一科,除南极之外在世界各地都有分布.天鹅、大雁,和赤麻鸭、秋沙鸭、绿头鸭等多种鸭类都是鸭科的成员,这些成员外形和习性各异,有的吃植物,有的以鱼虾为食;有些只能飘浮在水面上,有些则擅长潜水;有的飞行能力很强,有的则不善于飞行.天鹅和一些鸭子如麻鸭类雌雄相差不大,但很多鸭类则雌雄相差悬殊,雄鸟有艳丽的羽毛,而雌鸟则羽色暗淡.鸭科作为鸟类中的重要一分子,在我们生活中也是较为常见的,水塘边、湿地中,到处可见它们的身影,在这片广袤天地中,它们自在地生活着.现将鸭科里的几个物种做以展示,让我们一起看看可爱的小鸭子吧!     

自由自在水中游

<正>鸭科是鸟纲雁形目中的一个科,也是游禽类最大的一科,除南极之外在世界各地都有分布。天鹅、大雁,和赤麻鸭、秋沙鸭、绿头鸭等多种鸭类都是鸭科的成员,这些成员外形和习性各异,有的吃植物,有的以鱼虾为食;有些只能飘浮在水面上,有些则擅长潜水;有的飞行能力很强,有的则不善于飞行。天鹅和一些鸭子如     

水之灵--来自丽江拉市海流域的报告

城中的老人讲,水是古城的灵魂. 50年前,那水是署神住的地方,任何人为的污染都将遭到署的惩罚.那时,水是清甜可口的.     

The Water Problem in the Deserts of the USSR

A regional review of existing and planned irrigation projects in the desert zone of the Soviet Union envisages the use of water from the Siberian streams in the northern section of the desert zone. For increased water supplies in the south, the author looks to other potential sources such as artificial increases of precipitation in the mountains of Central Asia, elimination of wild growths of water-loving plants, and technological advances that will make possible the economical desalting of water from salt lakes and of mineralized subsurface waters.     

The Water Balance and Groundwater Resources in Connection with the Vertical Water Exchange in the Upper Zone of the Earth's Crust

For research on regional estimates of the water balance and future water-resource planning, it is important to determine the amount of water leakage downward across the base level, i.e. from the upper layers of the earth's crust drained by streams to the lower layers. The author presents a methodology based on water-balance equations that shows such leakage to be negligible in terms of the margin of error of precipitation and evapotranspiration records. It can therefore be assumed that the groundwater discharge into streams is practically identical with the recharge of groundwater reserves through percolation.     

在塞舌尔做条鱼

很多人喜欢拿马尔代夫来跟塞舌尔作比较,道理似乎不够强大。马尔代夫的沙滩只有蓝蓝的水和幼白的细沙,但大部分沙滩均是如此,挑剔一点的人会怪它没有性格;塞舌尔的沙滩便不同,用最简单的方法说明,当我抓了几把沙装进瓶子之后,整个沙瓶几乎没有瑕疵,沙粒里竟然没有任何不清洁的污垢。     

Water Birds in Lhunzhub

Water birds come in thefollowing species:reen-Headed Ducks: 50-62 cmlong, weighing 9,100-1,300 gramseach, distributed in Europe, Asia, NorthAmerica, Central America, and the northernpart of Africa. They inhabit lakes, rivers, pondsand swamps, gathering in large groups. They liveon leaves, buds, haulms (stems or stalks) and seeds of plantsas well as mollusks, crustaceans, water insects, small fish anshrimps. They breed from April to June with 7-11 eggs eachtime, which the female hatches in …     

Water Shortage in Yerpa

<正>Yerpa has four villages,80 families,24.6 ha.of farmland,more than a thousand head of livestock and over 66.7 ha.of orchards.It all depends on a stream flowin...     

Mast-Step Coins among the Romans

The archaeological evidence of more than a dozen ancient shipwrecks indicates that the tradition of placing a coin inside the mast-step of a ship's hold probably originated with the Romans. The mast-step coin phenomenon, which persisted through the Middle Ages and continues in various forms today, has often been characterized according to the modern concept of 'luck'. The custom was, however, not one of an exclusively maritime nature; rather, it was ultimately derived from a long-standing religious tradition that can be traced back to the consecration of the earliest Greek temples.
© 2007 The Author     

水也可以不温柔 夏日亲水旅游注意事项

<正>爱护皮肤游泳常见的皮肤问题,包括游泳者痒疹、海泳者皮肤疹、水母咬伤、海胆刺伤、移行性幼虫疹等。引发"海泳者皮肤疹"的原因,目前尚未证实,但通常是在离开海水数小时后,出现在泳衣遮蔽处,尤其是受压迫的部位,如     

河西的水神崇拜意识

河西走廊自古土地肥沃、水草丰美 ,极具农牧之利。但由于气候等原因 ,干旱长期威胁着人的生存和农牧业的发展。人们渴盼水的滋润 ,把希望深深地寄托予水神。从河西人民许多讴歌水的作品以及一系列与水有关的河西地名 ,我们能够体味出河西人相当浓厚的水神崇拜意识     

Local Water Supplies in the Desert and Agricultural Development

The water supply of range lands involves two Important problems: the availability of mineralized groundwater and the need for providing water to a large area with limited consumption at each watering point. Although the practice was long discouraged, herders have successfully supplied animals with water having a salt content of up to about 15 grams per liter, other water-supply possibilities, aside from the freezing method, Include the collection of rainwater in natural underground reservoirs and the tapping of lenticular freshwater strata discovered in sandy deserts.     

三川"纳顿"与水

青海省民和县东南约80公里的黄河岸边,有一块平坦而美丽的盆地,叫三川.当地以土族为主.这些“三川土人”,据说是吐谷浑的后裔.吐谷浑为古鲜卑的一支.约在公元4世纪之初,其首领吐谷浑率其部族从辽东一带迁至西北高原,曾在今青海湖一带建立吐谷浑王国,长达350年之久.土族的宗教信仰较复杂,除信奉藏传佛教外,还信道教和自然宗教.