Читать книгу The 2009 CIA World Factbook - United States. Central Intelligence Agency - Страница 307

Map references:

Africa

Area:

total: 1.284 million sq km country comparison to the world: 21 land: 1,259,200 sq km

water: 24,800 sq km

Area - comparative:

slightly more than three times the size of California

Land boundaries:

total: 5,968 km

border countries: Cameroon 1,094 km, Central African Republic 1,197 km, Libya 1,055 km, Niger 1,175 km, Nigeria 87 km, Sudan 1,360 km

Coastline:

0 km (landlocked)

Maritime claims:

none (landlocked)

Climate:

tropical in south, desert in north

Terrain:

broad, arid plains in center, desert in north, mountains in northwest, lowlands in south

Elevation extremes:

lowest point: Djourab Depression 160 m

highest point: Emi Koussi 3,415 m

Natural resources:

petroleum, uranium, natron, kaolin, fish (Lake Chad), gold, limestone, sand and gravel, salt

Land use:

arable land: 2.8%

permanent crops: 0.02%

other: 97.18% (2005)

Irrigated land:

300 sq km (2003)

Total renewable water resources:

43 cu km (1987)

Freshwater withdrawal (domestic/industrial/agricultural):

total: 0.23 cu km/yr (17%/0%/83%)

per capita: 24 cu m/yr (2000)

Natural hazards:

hot, dry, dusty harmattan winds occur in north; periodic droughts; locust plagues

Environment - current issues:

inadequate supplies of potable water; improper waste disposal in rural areas contributes to soil and water pollution; desertification