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(Article of periodic en Chinois - 1984)

Document title


Historical distribution of forests and grasslands in Gansu Province. (Inconnue)

Authors(s) and Affiliation(s)

XIAN Xiao-wei ;

Abstract

Historical records of the Qin (221-207 BC) and Han (207 BC-220AD) dynasties show that the present day bare hills and parched landscape of Gansu were forest-covered and grasslands supporting large herds of domestic animals. It was due to over-expansion of cultivation, deforestation, and war in late Tang dynasty (618-907 AD) that the balance in the ecosystem was disturbed. Population explosion and overgrazing in the Ming (1368-1644 AD) and Qing (1644-1911 AD) dynasties further speeded up the destruction of the natural vegetation. (TNC).

Source

Article of periodic

published at : Economic geography Changsha, Hunan

Editor :

Millesime : 1984, vol. 4, no3 [pp. 195-198]

Language

Chinois

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