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JOURNAL OF DESERT RESEARCH  2013, Vol. 33 Issue (6): 1789-1795    DOI: 10.7522/j.issn.1000-694X.2013.00266
Biology and Soil     
Carbon Sequestration Features of Grassland Vegetation-Soil System under Different Grazing Intensities
ZHANG Xue1, Wuyunna1, LIN Lu1,2, ZHAO Chen-yu1, WANG Xue-ting1, BAI Jia-yi1
1.College of Life Science, Dalian Nationalities University, Dalian 116600, Liaoning, China;
2.College of Life Science, Liaoning Normal University, Dalian 116029, Liaoning, China
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Abstract  

Grazing intensity influences carbon sequestration ability of grassland community. A research on carbon solid deposit characteristics of heterogeneous vegetation and soil system in different grazing intensities was conducted in the Hulunbeir grassland, Inner Mongolia. The results show that under grazing gradients, there was certain correlation among soil organic carbon matter, the ground biomass, underground biomass and soil microbial biomass carbon. With the increasing grazing stress and soil depth, carbon sequestration and soil organic matter reduced but soil inorganic carbon content gradually increased. In addition, the root-shoot ratio gradually increased. Affected by overgrazing, soil physical and chemical properties and soil quality became poor, thus these accelerated the loss of the soil organic matter. With the soil microbial biomass carbon as index of soil carbon sequestration degree, carbon sequestration capacity decreased with increase in grazing intensity.

Key words:  grazing intensity      aboveground biomass      underground biomass      soil organic carbon      soil microbial biomass carbon     
Received:  03 February 2013      Published:  12 April 2013
ZTFLH:  S812.2  

Cite this article: 

ZHANG Xue1, Wuyunna1, LIN Lu1,2, ZHAO Chen-yu1, WANG Xue-ting1, BAI Jia-yi1. Carbon Sequestration Features of Grassland Vegetation-Soil System under Different Grazing Intensities. JOURNAL OF DESERT RESEARCH, 2013, 33(6): 1789-1795.

URL: 

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00266     OR     http://www.desert.ac.cn/EN/Y2013/V33/I6/1789

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