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Effects of Grazing Exclusion on Soil Carbon and Nitrogen Storage in Semi-arid Grassland in Inner Mongolia, China

WU Xing LI Zongshan FU Bojie LU Fei WANG Dongbo LIU Huifeng LIU Guohua

WU Xing, LI Zongshan, FU Bojie, LU Fei, WANG Dongbo, LIU Huifeng, LIU Guohua. Effects of Grazing Exclusion on Soil Carbon and Nitrogen Storage in Semi-arid Grassland in Inner Mongolia, China[J]. 中国地理科学, 2014, (4): 479-487. doi: 10.1007/s11769-014-0694-1
引用本文: WU Xing, LI Zongshan, FU Bojie, LU Fei, WANG Dongbo, LIU Huifeng, LIU Guohua. Effects of Grazing Exclusion on Soil Carbon and Nitrogen Storage in Semi-arid Grassland in Inner Mongolia, China[J]. 中国地理科学, 2014, (4): 479-487. doi: 10.1007/s11769-014-0694-1
WU Xing, LI Zongshan, FU Bojie, LU Fei, WANG Dongbo, LIU Huifeng, LIU Guohua. Effects of Grazing Exclusion on Soil Carbon and Nitrogen Storage in Semi-arid Grassland in Inner Mongolia, China[J]. Chinese Geographical Science, 2014, (4): 479-487. doi: 10.1007/s11769-014-0694-1
Citation: WU Xing, LI Zongshan, FU Bojie, LU Fei, WANG Dongbo, LIU Huifeng, LIU Guohua. Effects of Grazing Exclusion on Soil Carbon and Nitrogen Storage in Semi-arid Grassland in Inner Mongolia, China[J]. Chinese Geographical Science, 2014, (4): 479-487. doi: 10.1007/s11769-014-0694-1

Effects of Grazing Exclusion on Soil Carbon and Nitrogen Storage in Semi-arid Grassland in Inner Mongolia, China

doi: 10.1007/s11769-014-0694-1
基金项目: Under the auspices of Strategic Priority Research Program of Chinese Academy of Sciences (No. XDA05060103), National Natural Science Foundation of China (No. 41105117), State Key Laboratory of Forest and Soil Ecology (No. LFSE2013-06)
详细信息
    通讯作者:

    LIU Guohua

Effects of Grazing Exclusion on Soil Carbon and Nitrogen Storage in Semi-arid Grassland in Inner Mongolia, China

Funds: Under the auspices of Strategic Priority Research Program of Chinese Academy of Sciences (No. XDA05060103), National Natural Science Foundation of China (No. 41105117), State Key Laboratory of Forest and Soil Ecology (No. LFSE2013-06)
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    Corresponding author: LIU Guohua
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出版历程
  • 收稿日期:  2013-10-30
  • 修回日期:  2014-02-27
  • 刊出日期:  2014-05-27

Effects of Grazing Exclusion on Soil Carbon and Nitrogen Storage in Semi-arid Grassland in Inner Mongolia, China

doi: 10.1007/s11769-014-0694-1
    基金项目:  Under the auspices of Strategic Priority Research Program of Chinese Academy of Sciences (No. XDA05060103), National Natural Science Foundation of China (No. 41105117), State Key Laboratory of Forest and Soil Ecology (No. LFSE2013-06)
    通讯作者: LIU Guohua

摘要: The semi-arid grasslands in Inner Mongolia, China have been degraded by long-term grazing. A series of ecological restoration strategies have been implemented to improve grassland service. However, little is known about the effect of these ecological restoration practices on soil carbon and nitrogen storage. In this study, characteristics of vegetation and soil properties under continued grazing and exclusion of livestock for six years due to a nationwide conservation program—‘Returning Grazing Lands to Grasslands (RGLG)’ were examined in semi-arid Hulun Buir grassland in Inner Mongolia, China. The results show that removal of grazing for six years resulted in a significant recovery in vegetation with higher above and below-ground biomass, but a lower soil bulk density and pH value. After six years of grazing exclusion, soil organic C and total N storage increased by 13.9% and 17.1%, respectively, which could be partly explained by decreased loss and increased input of C and N to soil. The effects of grazing exclusion on soil C and N concentration and storage primarily occurred in the upper soil depths. The results indicate that removal of grazing pressure within the RGLG program was an effective restoration approach to control grassland degradation in this region. However, more comprehensive studies are needed to evaluate the effectiveness of the RGLG program and to improve the management strategies for grassland restoration in this area.

English Abstract

WU Xing, LI Zongshan, FU Bojie, LU Fei, WANG Dongbo, LIU Huifeng, LIU Guohua. Effects of Grazing Exclusion on Soil Carbon and Nitrogen Storage in Semi-arid Grassland in Inner Mongolia, China[J]. 中国地理科学, 2014, (4): 479-487. doi: 10.1007/s11769-014-0694-1
引用本文: WU Xing, LI Zongshan, FU Bojie, LU Fei, WANG Dongbo, LIU Huifeng, LIU Guohua. Effects of Grazing Exclusion on Soil Carbon and Nitrogen Storage in Semi-arid Grassland in Inner Mongolia, China[J]. 中国地理科学, 2014, (4): 479-487. doi: 10.1007/s11769-014-0694-1
WU Xing, LI Zongshan, FU Bojie, LU Fei, WANG Dongbo, LIU Huifeng, LIU Guohua. Effects of Grazing Exclusion on Soil Carbon and Nitrogen Storage in Semi-arid Grassland in Inner Mongolia, China[J]. Chinese Geographical Science, 2014, (4): 479-487. doi: 10.1007/s11769-014-0694-1
Citation: WU Xing, LI Zongshan, FU Bojie, LU Fei, WANG Dongbo, LIU Huifeng, LIU Guohua. Effects of Grazing Exclusion on Soil Carbon and Nitrogen Storage in Semi-arid Grassland in Inner Mongolia, China[J]. Chinese Geographical Science, 2014, (4): 479-487. doi: 10.1007/s11769-014-0694-1
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