Identification of priority areas for controlling soil erosion

Auteur(s) et Affiliation(s)

ZHANG, X.

Inst. of Remote Sensing Applications, Chinese Academy of Sciences, Beijing, Chine

WU, B.

Inst. of Remote Sensing Applications, Chinese Academy of Sciences, Beijing, Chine

LING, F.

Haihe River Water Conservancy Committee, Ministry of Water Resources, Tianjin, Chine

ZENG, Y.

Inst. of Remote Sensing Applications, Chinese Academy of Sciences, Beijing, Chine

YAN, N.

Inst. of Remote Sensing Applications, Chinese Academy of Sciences, Beijing, Chine

YUAN, C.

Inst. of Remote Sensing Applications, Chinese Academy of Sciences, Beijing, Chine

Description :
The aim of this paper is to identify conservation priorities by a specific multicriteria evaluation method in the Yongding river basin. In this paper, vegetation cover, land-use, and slope gradient are used to assess erosion risk and trends in erosion risk are obtained by comparing the results of erosion risk between 2000 and 2006. Using this information, the priority conservation areas are graded into 6 levels. The 2 highest priority levels cover the regions with severe erosion or a substantial recent increase in erosion risk (11.82% of the study area), and are recommended as erosion control regions with appropriate conservation strategies. The middle 2 levels cover the regions with stable erosion status or slight change, needing only minor measures. The method presented is fast and straightforward, showing good potential for successful application in other areas.

Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2010, vol. 83, n°. 1, p. 76-86, nombre de pages : 11, Références bibliographiques : 51 ref.

Date :
2010

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena

Langue :
Anglais