Impact of grazing excluding and grazing on soil properties in sandy grassland in Horqin Sand Land, China

被引：1
|
作者：
He, Yu-Hui [1 ]
Zhao, Ha-Lin [1 ]
Liu, Xin-Ping [1 ]
机构：
[1] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
来源：
2009 INTERNATIONAL CONFERENCE ON ENVIRONMENTAL SCIENCE AND INFORMATION APPLICATION TECHNOLOGY, VOL II, PROCEEDINGS | 2009年
关键词：
Overgrazing; Grazing excluding; Soil properties; Degraded sandy grassland; Land Restoration; INNER-MONGOLIA; NORTHERN CHINA; CARBON; EXCLOSURES; VENEZUELA; ETHIOPIA; NITROGEN; SAVANNA; TIGRAY; FOREST;
D O I：
10.1109/ESIAT.2009.367
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
The restoration of degraded grassland which caused by overgrazing 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.
引用
收藏
页码：339 / 342
页数：4
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