Glorioso Islands (Iles Eparses): 11 30 S, 47 20 E

Juan de Nova Island (Iles Eparses): 17 03 S, 42 45 E

Tromelin Island (Iles Eparses): 15 52 S, 54 25 E

Map references:

Antarctic Region

Area:

Ile Amsterdam (Ile Amsterdam et Ile Saint-Paul): total - 55 sq km;

land - 55 sq km; water - 0 sq km

country comparison to the world: 229

Ile Saint-Paul (Ile Amsterdam et Ile Saint-Paul): total - 7 sq km;

land - 7 sq km; water - 0 sq km

Iles Crozet: total - 352 sq km; land - 352 sq km; water - 0 sq km

Iles Kerguelen: total - 7,215 sq km; land - 7,215 sq km; water - 0

sq km

Bassas da India (Iles Eparses): total - 80 sq km; land - 0.2 sq km;

water - 79.8 sq km (lagoon)

Europa Island (Iles Eparses): total - 28 sq km; land - 28 sq km;

water - 0 sq km

Glorioso Islands (Iles Eparses): total - 5 sq km; land - 5 sq km;

water - 0 sq km

Juan de Nova Island (Iles Eparses): total - 4.4 sq km; land - 4.4 sq

km; water - 0 sq km

Tromelin Island (Iles Eparses): total - 1 sq km; land - 1 sq km;

water - 0 sq km

note: excludes "Adelie Land" claim of about 500,000 sq km in

Antarctica that is not recognized by the US

Area - comparative:

Ile Amsterdam (Ile Amsterdam et Ile Saint-Paul): less than one-half

the size of Washington, DC

Ile Saint-Paul (Ile Amsterdam et Ile Saint-Paul): more than 10 times

the size of The Mall in Washington, DC

Iles Crozet: about twice the size of Washington, DC

Iles Kerguelen: slightly larger than Delaware

Bassas da India (Iles Eparses): land area about one-third the size

of The Mall in Washington, DC

Europa Island (Iles Eparses): about one-sixth the size of

Washington, DC

Glorioso Islands (Iles Eparses): about eight times the size of The

Mall in Washington, DC

Juan de Nova Island (Iles Eparses): about seven times the size of

The Mall in Washington, DC

Tromelin Island (Iles Eparses): about 1.7 times the size of The Mall

in Washington, DC

Land boundaries:

0 km

Coastline:

Ile Amsterdam (Ile Amsterdam et Ile Saint-Paul): 28 km

Ile Saint-Paul (Ile Amsterdam et Ile Saint-Paul):

Iles Kerguelen: 2,800 km

Bassas da India (Iles Eparses): 35.2 km

Europa Island (Iles Eparses): 22.2 km

Glorioso Islands (Iles Eparses): 35.2 km

Juan de Nova Island (Iles Eparses): 24.1 km

Tromelin Island (Iles Eparses): 3.7 km

Maritime claims:

territorial sea: 12 nm

exclusive economic zone: 200 nm from Iles Kerguelen and Iles Eparses

(does not include the rest of French Southern and Antarctic Lands);

Juan de Nova Island and Tromelin Island claim a continental shelf of

200-m depth or to the depth of exploitation

Climate:

Ile Amsterdam et Ile Saint-Paul: oceanic with persistent westerly

winds and high humidity

Iles Crozet: windy, cold, wet, and cloudy

Iles Kerguelen: oceanic, cold, overcast, windy

Iles Eparses: tropical

Terrain:

Ile Amsterdam (Ile Amsterdam et Ile Saint-Paul): a volcanic island

with steep coastal cliffs; the center floor of the volcano is a

large plateau

Ile Saint-Paul (Ile Amsterdam et Ile Saint-Paul): triangular in

shape, the island is the top of a volcano, rocky with steep cliffs

on the eastern side; has active thermal springs

Iles Crozet: a large archipelago formed from the Crozet Plateau is

divided into two groups of islands

Iles Kerguelen: the interior of the large island of Ile Kerguelen is

composed of rugged terrain of high mountains, hills, valleys, and

plains with a number of peninsulas stretching off its coasts

Bassas da India (Iles Eparses): atoll, awash at high tide; shallow

(15 m) lagoon

Europa Island, Glorioso Islands, Juan de Nova Island: low, flat, and

sandy

Tromelin Island (Iles Eparses): low, flat, sandy; likely volcanic

seamount

Elevation extremes:

lowest point: Indian Ocean 0 m

highest point: Mont de la Dives on Ile Amsterdam (Ile Amsterdam et

Ile Saint-Paul) 867 m; unnamed location on Ile Saint-Paul (Ile

Amsterdam et Ile Saint-Paul) 272 m; Pic Marion-Dufresne in Iles

Crozet 1,090 m; Mont Ross in Iles Kerguelen 1,850 m; unnamed

location on Bassas de India (Iles Eparses) 2.4 m; unnamed location

on Europa Island (Iles Eparses) 24 m; unnamed location on Glorioso

Islands (Iles Eparses) 12 m; unnamed location on Juan de Nova Island

(Iles Eparses) 10 m; unnamed location on Tromelin Island (Iles

Eparses) 7 m

Natural resources:

fish, crayfish

note: Glorioso Islands and Tromelin Island (Iles Eparses) have

guano, phosphates, and coconuts

Land use:

Ile Amsterdam (Ile Amsterdam et Ile Saint-Paul) - 100% trees,

grasses, ferns, and moss; Ile Saint-Paul (Ile Amsterdam et Ile

Saint-Paul) - 100% grass, ferns, and moss; Iles Crozet - 100%

tossock grass, heath, and fern; Iles Kerguelen - 100% tossock grass

and Kerguelen cabbage; Bassas da India (Iles Eparses) - 100% rock,

coral reef, and sand; Europa Island (Iles Eparses) - 100% mangrove

swamp and dry woodlands; Glorioso Islands (Iles Eparses) - 100% lush

vegetation and coconut palms; Juan de Nova Island (Iles Eparses) -

90% forest, 10% other; Tromelin Island (Iles Eparses) - 100% grasses

and scattered brush (2005)

Irrigated land:

0 sq km

Natural hazards:

Ile Amsterdam and Ile Saint-Paul are inactive volcanoes; Iles

Eparses subject to periodic cyclones; Bassas da India is a maritime

hazard since it is under water for a period of three hours prior to

and following the high tide and surrounded by reefs

volcanism: Reunion Island - Piton de la Fournaise (elev. 2,632 m,

8,635 ft), which has erupted many times in recent years, including

2010, is one of the world's most active volcanoes; although rare,

eruptions outside the volcano's caldera could threaten nearby cities

Environment - current issues:

introduction of foreign species on Iles Crozet has caused severe

damage to the original ecosystem; overfishing of Patagonian

toothfish around Iles Crozet and Iles Kerguelen

Geography - note:

islands component is widely scattered across remote locations in the

southern Indian Ocean

Bassas da India (Iles Eparses): the atoll is a circular reef that

sits atop a long-extinct, submerged volcano

Europa Island and Juan de Nova Island (Iles Eparses): wildlife

sanctuary for seabirds and sea turtles

Glorioso Island (Iles Eparses): the islands and rocks are surrounded

by an extensive reef system

Tromelin Island (Iles Eparses): climatologically important location

for forecasting cyclones in the western Indian Ocean; wildlife

sanctuary (seabirds, tortoises)

People ::French Southern and Antarctic Lands

Population:

no indigenous inhabitants

Ile Amsterdam (Ile Amsterdam et Ile Saint-Paul): has no permanent

residents but has a meteorological station

Ile Saint-Paul (Ile Amsterdam et Ile Saint-Paul): is uninhabited but

is frequently visited by fishermen and has a scientific research

cabin for short stays

Iles Crozet: are uninhabited except for 18 to 30 people staffing the

Alfred Faure research station on Ile del la Possession

Iles Kerguelen: 50 to 100 scientists are located at the main base at

Port-aux-Francais on Ile Kerguelen

Bassas da India (Iles Eparses): uninhabitable

Europa Island, Glorioso Islands, Juan de Nova Island (Iles Eparses):

a small French military garrison and a few meteorologists on each

possession; visited by scientists

Tromelin Island (Iles Eparses): uninhabited, except for visits by

scientists

Government ::French Southern and Antarctic Lands

Country name:

conventional long form: Territory of the French Southern and

Antarctic Lands

conventional short form: French Southern and Antarctic Lands

local long form: Territoire des Terres Australes et Antarctiques

Francaises

local short form: Terres Australes et Antarctiques Francaises

abbreviation: TAAF

Dependency status:

overseas territory of France since 1955

Administrative divisions:

none (overseas territory of France); there are no first-order

administrative divisions as defined by the US Government, but there

are five administrative districts named Iles Crozet, Iles Eparses,

Iles Kerguelen, Ile Saint-Paul et Ile Amsterdam; the fifth district

is the "Adelie Land" claim in Antarctica that is not recognized by

the US

Legal system:

the laws of France where applicable apply

Executive branch:

chief of state: President Nicolas SARKOZY (since 16 May 2007),

represented by Senior Administrator Christian GAUDIN (since 4

November 2010)

International organization participation:

UPU

Diplomatic representation in the US:

none (overseas territory of France)

Diplomatic representation from the US:

none (overseas territory of France)

Flag description:

the flag of France is used

National anthem:

note: as a territory of France, "La Marseillaise" is official (see

France)

Economy ::French Southern and Antarctic Lands

Economy - overview:

Economic activity is limited to servicing meteorological and

geophysical research stations, military bases, and French and other

fishing fleets. The fish catches landed on Iles Kerguelen by foreign

ships are exported to France and Reunion.

Communications ::French Southern and Antarctic Lands

Internet country code:

.tf

Internet hosts:

44 (2010)

country comparison to the world: 212

Communications - note:

one or more meteorological stations on each possession; note -

meteorological station on Tromelin Island (Iles Eparses) is

important for forecasting cyclones

Transportation ::French Southern and Antarctic Lands

Airports:

4 (note - one each on Europa Island, Glorioso Islands, Juan de Nova

Island, and Tromelin Island in the Iles Eparses district) (2010)

country comparison to the world: 188

Ports and terminals:

none; offshore anchorage only

Transportation - note:

aids to navigation - lighthouses: Europa Island 18m; Juan de Nova

Island (W side) 37m; Tromelin Island (NW point) 11m (all in the Iles

Eparses district)

Military ::French Southern and Antarctic Lands

Military - note:

defense is the responsibility of France

Transnational Issues ::French Southern and Antarctic Lands

Disputes - international:

French claim to "Adelie Land" in Antarctica is not recognized by the

US

Bassas da India, Europa Island, Glorioso Islands, Juan de Nova

Island (Iles Eparses): claimed by Madagascar; the vegetated drying

cays of Banc du Geyser, which were claimed by Madagascar in 1976,

also fall within the EEZ claims of the Comoros and France (Glorioso

Islands)

Tromelin Island (Iles Eparses): claimed by Mauritius

page last updated on December 29, 2010

======================================================================

@Gabon (Africa)

Introduction ::Gabon

Background:

Until recently, only two autocratic presidents had ruled Gabon since

its independence from France in 1960. The recent president of Gabon,

El Hadj Omar BONGO Ondimba - one of the longest-serving heads of

state in the world - had dominated the country's political scene for

four decades. President BONGO introduced a nominal multiparty system

and a new constitution in the early 1990s. However, allegations of

electoral fraud during local elections in 2002-03 and the

presidential elections in 2005 exposed the weaknesses of formal

political structures in Gabon. President BONGO died in June 2009.

New elections in August 2009 brought Ali Ben BONGO, son of the

former president, to power. Despite political conditions, a small

population, abundant natural resources, and considerable foreign

support have helped make Gabon one of the more prosperous and stable

African countries. In January 2010, Gabon assumed a nonpermanent

seat on the UN Security Council for the 2010-11 term.

Geography ::Gabon

Location:

Western Africa, bordering the Atlantic Ocean at the Equator, between

Republic of the Congo and Equatorial Guinea

Geographic coordinates:

1 00 S, 11 45 E

Map references:

Africa

Area:

total: 267,667 sq km

country comparison to the world: 76

land: 257,667 sq km

water: 10,000 sq km

Area - comparative:

slightly smaller than Colorado

Land boundaries:

total: 2,551 km

border countries: Cameroon 298 km, Republic of the Congo 1,903 km,

Equatorial Guinea 350 km

Coastline:

885 km

Maritime claims:

territorial sea: 12 nm

contiguous zone: 24 nm

exclusive economic zone: 200 nm

Climate:

tropical; always hot, humid

Terrain:

narrow coastal plain; hilly interior; savanna in east and south

Elevation extremes:

lowest point: Atlantic Ocean 0 m

highest point: Mont Iboundji 1,575 m

Natural resources:

petroleum, natural gas, diamond, niobium, manganese, uranium, gold,

timber, iron ore, hydropower

Land use:

arable land: 1.21%

permanent crops: 0.64%

other: 98.15% (2005)

Irrigated land:

70 sq km (2003)

Total renewable water resources:

164 cu km (1987)

Freshwater withdrawal (domestic/industrial/agricultural):

total: 0.12 cu km/yr (50%/8%/42%)

per capita: 87 cu m/yr (2000)

Natural hazards:

NA

Environment - current issues:

deforestation; poaching

Environment - international agreements:

party to: Biodiversity, Climate Change, Climate Change-Kyoto

Protocol, Desertification, Endangered Species, Hazardous Wastes, Law

of the Sea, Marine Dumping, Ozone Layer Protection, Ship Pollution,

Tropical Timber 83, Tropical Timber 94, Wetlands, Whaling

signed, but not ratified: none of the selected agreements

Geography - note:

a small population and oil and mineral reserves have helped Gabon

become one of Africa's wealthier countries; in general, these

circumstances have allowed the country to maintain and conserve its

pristine rain forest and rich biodiversity

People ::Gabon

Population:

1,545,255

country comparison to the world: 151

note: estimates for this country explicitly take into account the

effects of excess mortality due to AIDS; this can result in lower

life expectancy, higher infant mortality, higher death rates, lower

population growth rates, and changes in the distribution of

population by age and sex than would otherwise be expected (July

2010 est.)

Age structure:

0-14 years: 42.1% (male 320,414/female 318,027)

15-64 years: 53.9% (male 407,461/female 409,633)

65 years and over: 3.9% (male 24,799/female 34,659) (2010 est.)

Median age:

total: 18.6 years

male: 18.4 years

female: 18.9 years (2010 est.)

Population growth rate:

2.025% (2010 est.)

country comparison to the world: 53

Birth rate:

35.39 births/1,000 population (2010 est.)

country comparison to the world: 33

Death rate:

12.9 deaths/1,000 population (July 2010 est.)

country comparison to the world: 25

Net migration rate:

-2.24 migrant(s)/1,000 population (2010 est.)

country comparison to the world: 176

Urbanization:

urban population: 85% of total population (2008)

rate of urbanization: 2.1% annual rate of change (2005-10 est.)

Sex ratio:

at birth: 1.03 male(s)/female

under 15 years: 1.01 male(s)/female

15-64 years: 1 male(s)/female

65 years and over: 0.72 male(s)/female

total population: 0.99 male(s)/female (2010 est.)

Infant mortality rate:

total: 50.88 deaths/1,000 live births

country comparison to the world: 49

male: 59 deaths/1,000 live births

female: 42.51 deaths/1,000 live births (2010 est.)

Life expectancy at birth:

total population: 52.75 years

country comparison to the world: 206

male: 51.96 years

female: 53.58 years (2010 est.)

Total fertility rate:

4.62 children born/woman (2010 est.)

country comparison to the world: 34

HIV/AIDS - adult prevalence rate:

5.9% (2007 est.)

country comparison to the world: 13

HIV/AIDS - people living with HIV/AIDS:

49,000 (2007 est.)

country comparison to the world: 65

HIV/AIDS - deaths:

2,300 (2007 est.)

country comparison to the world: 57

Major infectious diseases:

degree of risk: very high

food or waterborne diseases: bacterial diarrhea, hepatitis A, and

typhoid fever

vectorborne disease: malaria and chikungunya

water contact disease: schistosomiasis

animal contact disease: rabies (2009)

Nationality:

noun: Gabonese (singular and plural)

adjective: Gabonese

Ethnic groups:

Bantu tribes, including four major tribal groupings (Fang, Bapounou,

Nzebi, Obamba); other Africans and Europeans, 154,000, including

10,700 French and 11,000 persons of dual nationality

Religions:

Christian 55%-75%, animist, Muslim less than 1%

Languages:

French (official), Fang, Myene, Nzebi, Bapounou/Eschira, Bandjabi

Literacy:

definition: age 15 and over can read and write

total population: 63.2%

male: 73.7%

female: 53.3% (1995 est.)

School life expectancy (primary to tertiary education):

total: 13 years

male: 13 years

female: 12 years (1999)

Education expenditures:

3.8% of GDP (2000)

country comparison to the world: 120

Government ::Gabon

Country name:

conventional long form: Gabonese Republic

conventional short form: Gabon

local long form: Republique Gabonaise

local short form: Gabon

Government type:

republic; multiparty presidential regime

Capital:

name: Libreville

geographic coordinates: 0 23 N, 9 27 E

time difference: UTC+1 (6 hours ahead of Washington, DC during

Standard Time)

Administrative divisions:

9 provinces; Estuaire, Haut-Ogooue, Moyen-Ogooue, Ngounie, Nyanga,

Ogooue-Ivindo, Ogooue-Lolo, Ogooue-Maritime, Woleu-Ntem

Independence:

17 August 1960 (from France)

National holiday:

Independence Day, 17 August (1960)

Constitution:

adopted 14 March 1991

Legal system:

based on French civil law system and customary law; judicial review

of legislative acts in Constitutional Chamber of the Supreme Court;

has not accepted compulsory ICJ jurisdiction

Suffrage:

21 years of age; universal

Executive branch:

chief of state: President Ali Ben BONGO Ondimba (since 16 October

2009)

head of government: Prime Minister Paul BIYOGHE MBA (since 15 July

2009)

cabinet: Council of Ministers appointed by the prime minister in

consultation with the president

(For more information visit the World Leaders website )

elections: president elected by popular vote for a seven-year term

(no term limits); election last held on 30 August 2009 (next to be

held in 2016); prime minister appointed by the president

election results: President Ali Ben BONGO Ondimba elected; percent

of vote - Ali Ben BONGO Ondimba 41.7%, Andre MBA OBAME 25.9%, Pierre

MAMBOUNDOU 25.2%, Zacharie MYBOTO 3.9%, other 3.3%

note: President BONGO died on 8 June 2009 after serving as president

for 32 years; in accordance with the constitution he was replaced on

an interim basis by the president of the Senate, Rose Francine

ROGOMBE on 10 June 2009; new elections where held on 30 August 2009

and the son of the former president, Ali Ben BONGO Ondimba, was

elected president

Legislative branch:

bicameral legislature consists of the Senate (102 seats; members

elected by members of municipal councils and departmental assemblies

to serve six-year terms) and the National Assembly or Assemblee

Nationale (120 seats; members are elected by direct, popular vote to

serve five-year terms)

elections: Senate - last held on 18 January 2009 (next to be held in

January 2015); National Assembly - last held on 17 and 24 December

2006 (next to be held in December 2011)

election results: Senate - percent of vote by party - NA; seats by

party - PDG 75, RPG 6, UGDD 3, CLR 2, PGCI 2, PSD 2, UPG 2, ADERE 1,

independents 9; National Assembly - percent of vote by party - NA;

seats by party - PDG 82, RPG 8, UPG 8, UGDD 4, ADERE 3, CLR 2,

PGP-Ndaot 2, PSD 2, independents 4, others 5

Judicial branch:

Supreme Court or Cour Supreme consisting of three chambers -

Judicial, Administrative, and Accounts; Constitutional Court; Courts

of Appeal; Court of State Security; County Courts

Political parties and leaders:

Circle of Liberal Reformers or CLR [General Jean Boniface ASSELE];

Congress for Democracy and Justice or CDJ [Jules Aristide Bourdes

OGOULIGUENDE]; Democratic and Republican Alliance or ADERE

[Divungui-di-Ndinge DIDJOB]; Gabonese Democratic Party or PDG

[Simplice Nguedet MANZELA] (former sole party); Gabonese Party for

Progress or PGP [Benoit Mouity NZAMBA]; Gabonese Union for Democracy

and Development or UGDD [Zacherie MYBOTO]; National Rally of

Woodcutters or RNB; National Rally of Woodcutters-Rally for Gabon or

RNB-RPG (Bucherons) [Fr. Paul M'BA-ABESSOLE]; Party of Development

and Social Solidarity or PDS [Seraphin Ndoat REMBOGO]; People's

Unity Party or PUP [Louis Gaston MAYILA]; Social Democratic Party or

PSD [Pierre Claver MAGANGA-MOUSSAVOU]; Union for Democracy and

Social Integration or UDIS; Union of Gabonese Patriots or UPG

[Pierre MAMBOUNDOU]

Political pressure groups and leaders:

NA

International organization participation:

ACP, AfDB, AU, BDEAC, CEMAC, FAO, FZ, G-24, G-77, IAEA, IBRD, ICAO,

ICCt, ICRM, IDA, IDB, IFAD, IFC, IFRCS, ILO, IMF, IMO, IMSO,

Interpol, IOC, IOM, IPU, ISO (correspondent), ITSO, ITU, ITUC, MIGA,

NAM, OIC, OIF, OPCW, UN, UN Security Council (temporary), UNCTAD,

UNESCO, UNIDO, UNWTO, UPU, WCO, WHO, WIPO, WMO, WTO

Diplomatic representation in the US:

chief of mission: Ambassador Carlos Victor BOUNGOU

chancery: Suite 200, 2034 20th Street NW, Washington, DC 20009

telephone: [1] (202) 797-1000

FAX: [1] (202) 332-0668

consulate(s): New York

Diplomatic representation from the US:

chief of mission: Ambassador Eunice S. REDDICK

embassy: Boulevard du Bord de Mer, Libreville

mailing address: Centre Ville, B. P. 4000, Libreville; pouch:2270

Libreville Place, Washington, DC 20521-2270

telephone: [241] 76 20 03 through 76 20 04, after hours - 07380171

FAX: [241] 74 55 07

Flag description:

three equal horizontal bands of green (top), yellow, and blue; green

represents the country's forests and natural resources, gold

represents the equator (which transects Gabon) as well as the sun,

blue represents the sea

National anthem:

name: "La Concorde" (The Concorde)

lyrics/music: Georges Aleka DAMAS

note: adopted 1960

Economy ::Gabon

Economy - overview:

Gabon enjoys a per capita income four times that of most sub-Saharan

African nations, but because of high income inequality, a large

proportion of the population remains poor. Gabon depended on timber

and manganese until oil was discovered offshore in the early 1970s.

The oil sector now accounts for more than 50% of GDP although the

industry is in decline as fields pass their peak production. Gabon

continues to face fluctuating prices for its oil, timber, and

manganese exports and the global recession led to a GDP contraction

of 1.4% in 2009. Despite the abundance of natural wealth, poor

fiscal management hobbles the economy. In 1997, an IMF mission to

Gabon criticized the government for overspending on off-budget

items, overborrowing from the central bank, and slipping on its

schedule for privatization and administrative reform. The rebound of

oil prices from 1999 to 2008 helped growth, but drops in production

have hampered Gabon from fully realizing potential gains. Gabon

signed a 14-month Stand-By Arrangement with the IMF in May 2007, and

later that year issued a $1 billion sovereign bond to buy back a

sizable portion of its Paris Club debt.

GDP (purchasing power parity):

$22.54 billion (2010 est.)

country comparison to the world: 120

$21.39 billion (2009 est.)

$21.69 billion (2008 est.)

note: data are in 2010 US dollars

GDP (official exchange rate):

$12.56 billion (2010 est.)

GDP - real growth rate:

5.4% (2010 est.)

country comparison to the world: 47

-1.4% (2009 est.)

2.3% (2008 est.)

GDP - per capita (PPP):

$14,600 (2010 est.)

country comparison to the world: 78

$14,100 (2009 est.)

$14,600 (2008 est.)

note: data are in 2010 US dollars

GDP - composition by sector:

agriculture: 4.5%

industry: 62.7%

services: 32.8% (2010 est.)

Labor force:

712,000 (2010 est.)

country comparison to the world: 148

Labor force - by occupation:

agriculture: 60%

industry: 15%

services: 25% (2000 est.)

Unemployment rate:

21% (2006 est.); NA%

country comparison to the world: 170

Population below poverty line:

NA%

Household income or consumption by percentage share:

lowest 10%: 2.5%

highest 10%: 32.7% (2005)

Investment (gross fixed):

28.8% of GDP (2010 est.)

country comparison to the world: 22

Public debt:

25.8% of GDP (2010 est.)

country comparison to the world: 94

27.6% of GDP (2009 est.)

Inflation rate (consumer prices):

The 2010 CIA World Factbook · 第 78 / 461 段