DocumentCode :
496969
Title :
Impact of Grazing Excluding and Grazing on Soil Properties in Sandy Grassland in Horqin Sand Land, China
Author :
He, Yu-Hui ; Zhao, Ha-Lin ; Liu, Xin-Ping
Author_Institution :
Cold & Arid Regions Environ. & Eng. Res. Inst., Chinese Acad. of Sci., Lanzhou, China
Volume :
2
fYear :
2009
fDate :
4-5 July 2009
Firstpage :
339
Lastpage :
342
Abstract :
The restoration of degraded grassland which caused by over-grazing is directly related to land sustainable and economical development in North China. However, it is not well know that the impact of grazing excluding and continuous free grazing on soil properties in this region. In this paper, Soil physical and chemical properties under grazing excluded for 5 and 11 years and free grazing were examined in representative degraded sandy grassland. Results showed that continuous free grazing cause soil compaction, soil structure degradation, and loss of soil organic C and total N. Different period exclusion contribute to soil structure improvement, bulk density decreased, and soil fertility improvement through area protection. In addition, soil organic C and total N stocks showed a significant increasing trend from FG to 11GE. It indicated grazing excluding has important significance in soil restoration. So there is a need to develop sustainable grassland management and exclusion practices to combat the ongoing grassland degradation in the region.
Keywords :
carbon; environmental factors; farming; geophysical techniques; nitrogen; soil; vegetation; C; China; Horqin sandland; N; degraded grassland restoration; economical land development; grazing effects; overgrazing; sandy grassland; soil chemical properties; soil compaction; soil organic carbon decrease; soil physical properties; soil properties; soil structure degradation; soil total nitrogen decrease; sustainable land development; Agriculture; Chemicals; Compaction; Environmental economics; Laboratories; Protection; Sea level; Soil properties; Thermal degradation; Vegetation; Degraded sandy grassland; Grazing excluding; Land Restoration; Overgrazing; Soil properties;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Environmental Science and Information Application Technology, 2009. ESIAT 2009. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-0-7695-3682-8
Type :
conf
DOI :
10.1109/ESIAT.2009.367
Filename :
5199903
Link To Document :
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