Land degradation of Agro-Pastoral Zigzag Zone in Northern China based on RS and GIS

Author

Yanxia, Lu ; Jing, Wang ; Zhenqiang, Mao

Author_Institution

Inst. of Geogr. Sci. & Natural Resources Res., Chinese Acad. of Sci., Beijing

Volume

3

fYear

2004

fDate

20-24 Sept. 2004

Firstpage

2111

Abstract

This paper presents a study on land degradation tendency in the middle part of the North Agro-Pastoral Zigzag Zone. Depending mainly on 1990 and 2002 TM images, and with other data such as soil, DEM etc., the results show that: about 45.8% of the land in the studied area has a problem of degradation. The most important type of land degradation problem is sandy desertification and water erosion is the second and the limited salinization soils mainly centralized around drying lakes and limited irrigating farming lands. However, the degradation level decrease from Northwestern to the Southeastern of the studied area, with the degradation type changes from sandy desertification to water erosion

Keywords

environmental degradation; erosion; geographic information systems; soil; terrain mapping; AD 1990; AD 2002; GIS; North Agro-Pastoral Zigzag Zone; Northern China; Northwestern China; RS; Southeastern China; TM images; drying lakes; irrigating farming lands; land degradation; salinization soils; sandy desertification; water erosion; Degradation; Geographic Information Systems; Humans; Laboratories; Lakes; Rain; Remote monitoring; Soil; Storms; Vegetation mapping;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004 IEEE International

Conference_Location

Anchorage, AK

Print_ISBN

0-7803-8742-2

Type

conf

DOI

10.1109/IGARSS.2004.1370774

Filename

1370774