Alabama state, Детальна інформація

Alabama state
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Автор: Олексій
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Long years of growing cotton and corn lowered the fertility of Alabama's soils. The abundant rainfall also caused the topsoil to be washed away. In many places, especially in the Piedmont Plateau and the Black Belt, farms are now planted in grasses to improve the soil and provide pasture for cattle.

Forests. About 60 per cent of all the land of Alabama is forested. Many kinds of trees are found, but the soft pine is the most common. It is also the most valuable for wood pulp, which is used for making paper. The pine forests grow mainly in the central and southern parts of the state.

To improve worn-out soils, farmers have developed many tree farms for future harvest. Paper companies, farmers, and the government all help in a continuing program of reforestation.

Minerals. Most of Alabama's minerals are in the northern half of the state. Coal and iron ore are found in the Appalachian Plateau and in the

Ridge and Valley Region. One of the largest deposits, or fields, of coal is the Warrior field. It extends through all of Walker County and parts of

Fayette, Tuscaloosa, and Jefferson counties. Some of the best beds of iron ore are in the Birmingham area.

Limestone occurs in the Tennessee Valley and in the Ridge and Valley

Region, as well as in areas of the Gulf Coastal Plain. Marble is found in

Coosa and Talladega counties.

Petroleum is the most important mineral of the Gulf Coastal Plain. It has been found in the extreme southwestern counties. There are important salt deposits north of Mobile. Henry and Barbour counties, as well as other parts of the state, have deposits of bauxite, a claylike mineral from which aluminum is obtained.

| POPULATION |

|TOTAL: 3,893,888 (1980 census). Density—29.6 |

|persons to each square kilometer (76.7 persons |

|to each square mile). |

|GROWTH SINCE 1820 |

|Year Population |

|Year Population |

|1820 127,901 |

|1920 2,348,174 |

|1860 964,201 |

|1960 3,266,740 |

|1880 1,262,505 |

|1970 3,444,354 |

|1900 1,828,697 |

|1980 3,893,888 |

|Gain Between 1970 and 1980—13.1 percent |

|CITIES: Fifteen of Alabama's cities have a |

|population of more than 25,000 (1980 census). |

|Birmingham 284,413 Prichard 39,541 |

|Mobile 200,452 Florence 37,029 |

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