secondary salinization

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• Asia — /ay zheuh, ay sheuh/, n. a continent bounded by Europe and the Arctic, Pacific, and Indian oceans. 2,896,700,000; ab. 16,000,000 sq. mi. (41,440,000 sq. km). * * * I Largest continent on Earth. It is bounded by the Arctic Ocean, the Pacific Ocean …   Universalium

• Karakum Desert — or Kara Kum Desert Desert area, Central Asia. Located in Turkmenistan, it is bounded to the east by the Amu Darya valley. It can be divided into three major regions: the elevated and wind eroded Trans Unguz in the north, the low lying central… …   Universalium

• Salinity control — relates to controlling the problem of soil salinity and reclaiming salinized agricultural land. The aim of soil salinity control is to prevent soil degradation by salinization and reclaim already salty (saline) soils. Soil reclamation is also… …   Wikipedia

• Geography of Turkmenistan — Dust Storm Over Turkmenistan Turkmenistan is a landlocked country in Central Asia, bordering the Caspian Sea to the west, Iran and Afghanistan to the south, Uzbekistan to the north east, and Kazakhstan to the north west. It is the southernmost… …   Wikipedia

• Tropical agriculture — Worldwide more human beings gain their livelihood from agriculture than any other endeavor; the majority are self employed subsistence farmers living in the tropics. While growing food for local consumption is the core of tropical agriculture,… …   Wikipedia

• Australia — /aw strayl yeuh/, n. 1. a continent SE of Asia, between the Indian and the Pacific oceans. 18,438,824; 2,948,366 sq. mi. (7,636,270 sq. km). 2. Commonwealth of, a member of the Commonwealth of Nations, consisting of the federated states and… …   Universalium

• Historical ecology — is a research program that focuses on the intermingling of people and the environments in which they live. Rather than just looking at a quick snapshot, historical ecology involves studying and understanding this relationship in both time and… …   Wikipedia

• Kerala — Malayalam is written in a non Latin script. Malayalam text used in this article is transliterated into the Latin script according to the ISO 15919 standard …   Wikipedia

• Egypt — /ee jipt/, n. 1. Arab Republic of. a republic in NE Africa. 64,791,891; 386,198 sq. mi. (1,000,252 sq. km). Cap.: Cairo. Arabic, Misr. Formerly (1958 71), United Arab Republic. 2. an ancient kingdom in NE Africa: divided into the Nile Delta… …   Universalium

• river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …   Universalium

• chad — /chad/, n. Computers. a small paper disk or square formed when a hole is punched in a punch card or paper tape. [1945 50; orig. uncert.] * * * Chad Introduction Chad Background: Chad, part of France s African holdings until 1960, endured three… …   Universalium