Land use change and its ecological effect in Qian'an County of Jilin Province

Auteurs :
ZHONG, L.
ZHANG, Y.
ZHAO, S.
RYAVEC, K.E.

Description :
Based on GIS and statistical methods, with the help of searching historical literatures and calculating the landscapes indices, the land use changes of Qian'an County in both spatial and temporal aspects from 1945 to 1996 has been analyzed in this paper. The driving forces of land use changes and their ecological effects are discussed too. The main landscape type changed from a steppe landscape to a managed agricultural ecosystem. The ecological effects of land use change in the area are characterized by serious salinization, degression of soil fertility and the weakening of landscape suitability.


Type de document :
Article de périodique

Source :
Journal of geographical sciences. Acta geographica sinica, issn : 1009-637X, 2003, vol. 13, n°. 4, p. 423-428, nombre de pages : 6, Collation : Illustration, Références bibliographiques : 14 ref.

Date :
2003

Editeur :
Pays édition : Chine