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Gobi Desert

Most deserts and (semi-) arid regions occur between 10° and 35° latitude (e g. Sahara desert, Kalahari desert), in the interior parts of continents (e g. Australia, Gobi desert) and in rain shadow areas in fold belts (e.g. Peru, Nepal). Large parts of the arctic tundra receive less than 250 mm precipitation per annum and qualify as arid regions too (FAO, 2001). [Pg.8]

Arid and semi-arid lands are quite widespread in Asia, where deserts make up some 11% of this continent (Table 1.1) in Central Asia, north and east of the Caspian to Aral Sea area. In the Turkestan desert, large dunes form huge sand seas (Nettleton and Peterson, 1983). West and North of China, the Takla-Makan and Gobi deserts dominate the landscapes. More to the south, the Great Indian Desert extends up to the Himalayan foothills. More to the west are the hyperarid areas of the Dasht-i-Lat and Dasht-i-Kavri deserts in Iran and Syrian deserts. Immense areas in the north-central part of the Arabian Peninsula and in the Rub al Khali deserts in its southeastern part are hyperarid or arid. [Pg.18]

The vast area of Arid and Semi-Arid ecosystems of Central and East Asia is subject to wind erosion. The major natural sources of dust emission are Gobi desert (Xinjiang... [Pg.170]

We can see that due to joint effects of aridity and soil texture, the dust emission rates increase from east to west by as much as 5 orders. The maximum emission rate is 1.5 ton/ha/yr. The total dust emission amount of the Gobi desert is estimated as 25 x 106 tons per year and that in spring is 15 x 106 tons per year. The seasonal dust emission amounts in summer, autumn and winter are 1.4 x 106, 5.7 x 106 and 2.9 x 106 tons, correspondingly. [Pg.171]

In plain autonomous ecosystems the fluxes of sodium are less 40 g/ha/yr and those of Mg are less than 10 g/ha/yr. For iron these values are close to 1 g/ha/yr, and for all heavy metals, are between 0.01 and 0.04 g/ha/yr. In the geochemically subordinate landscapes (Naloxylon ammodendron and Ephedra przewalskii ecosystems) which receive additional moisture and chemical elements, the biogeochemical exposure fluxes are 360-912 g/ha/yr for Mg and Na, and from 0.44 to 6.65 g/ha/yr for heavy metals. In the periphery of the Gobi desert, Anabasis brevifloria and Graminaceae Dry Desert ecosystems show the overall increase of biogeochemical fluxes. The turnover for some elements (Mg, V, Cr) rises but slightly in comparison to their turnover in Extra-Dry ecosystems, whereas the turnover for other elements (Sr, Zn, Cu) increases several times. [Pg.180]

Which of the following settings is the most suitable for photochemical smog formation (a) Gobi desert... [Pg.722]

Analysis of these data show that concentration of each chemical element was higher in TSP during Yellow sand cases than during non-Yellow sand cases by 2-3 orders. Most elements were indicated to have higher concentrations in coarse particles than in finer ones. This could be related both to the chemical composition of soil from the Gobi desert as the main source of coarse TSP and to the adsorption of heavy... [Pg.63]

Samoilov VS, Benjamini C (1996) Geochemical featmes of dinosaur remairts from the Gobi Desert, South Mongoha. Palaios 11 519-531... [Pg.519]

The Gobi desert laeks the primary pollutants (nitric oxide, carbon monoxide, hydrocaibons) to have... [Pg.528]

A Tibetan legend tells of a city to the north of the Gobi Desert in today s Northern China, called Shambhala or the Hidden City of Goodness, founded by Manu the Priest King and Great Lawmaker of the Indo-Hittite Aryans. In his merit or caste system of social stability, Manu °... [Pg.58]

Several miles north of Como Bluffs, AA oming, a dinosaur quarry was found which yielded 483 specimens weighing a total of 146,000 pounds. The Cleveland Lloyd quarry in Utah has yielded over 12,000 bones of 70 different animals and 10 different kinds of dinosaurs. At Dinosaur National Monument near Vernal, Utah, 20 complete skeletons, as well as bones and parts of skeletons representing nearly 300 individual dinosaurs, were extracted. There are similar graveyards in the Gobi Desert of Mongolia, in Africa, in the foothills of the Himalayas, in South America, in Europe— in short, aU over the world. [Pg.34]

Which of the following settings is the most suitable for photochemical smog formation (a) Gobi desert at noon in June, (b) New York City at 1 p.m. in July, (c) Boston at noon in January. Explain your choice. [Pg.797]


See other pages where Gobi Desert is mentioned: [Pg.83]    [Pg.15]    [Pg.16]    [Pg.171]    [Pg.179]    [Pg.180]    [Pg.143]    [Pg.76]    [Pg.2039]    [Pg.2040]    [Pg.2648]    [Pg.4073]    [Pg.121]    [Pg.304]    [Pg.280]    [Pg.281]    [Pg.286]    [Pg.11]    [Pg.63]    [Pg.493]    [Pg.514]    [Pg.520]    [Pg.4]    [Pg.58]    [Pg.371]    [Pg.14]    [Pg.109]    [Pg.83]    [Pg.458]    [Pg.48]    [Pg.355]   
See also in sourсe #XX -- [ Pg.58 ]

See also in sourсe #XX -- [ Pg.178 ]




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