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Grazing exclusion significantly improves grassland ecosystem C and N pools in a desert steppe of Northwest China
Wang, Kaibo1; Deng, Lei2; Ren, Zongping3; Li, Jianping4; Shangguan, Zhouping2
2016-02-01
发表期刊CATENA
卷号137期号:2016页码:441-448
文章类型Article
摘要Grazing exclusion is often implemented as an effective management practice to increase the sustainability of grassland ecosystems. However, it remains unclear if grazing exclusion can improve ecosystem services related to carbon (C) and nitrogen (N) sequestration in grassland ecosystems. We investigated the effects of 11 years of grazing exclusion on plant biomass and diversity, soil properties (pH, soil water content (SWC), bulk density (BD), soil organic carbon (SOC), total nitrogen (TN),.and C/N ratio), and the C and N stocks of plants and soils in a desert grassland of Northwest China. Grazing exclusion improved plant aboveground biomass and diversity, as well as SWC, SOC, and TN contents, but lowered the belowground biomass, root/shoot ratio, pH, and BD. Moreover, grazing exclusion strongly influenced the C and N stocks of the ecosystem, and the annual mearbecosystem C and N sequestration rates were 0.47 and 0.09 Mg ha(-1) yr(-1), respectively, over 11 years of grazing exclusion. Soil C stocks were most dynamic in the top 30 cm of the soil, and N stocks mainly changed in the top 20 cm after grazing exclusion. Our results indicated that grazing exclusion is an effective measurement on improving the ecosystem C and N pools in desert steppe of Northwest China. (C) 2015 Elsevier B.V. All rights reserved.
关键词Fencing Grazing Vegetation Characteristics Soil Prosperities Carbon Sequestration Nitrogen Sequestration
WOS标题词Science & Technology ; Physical Sciences ; Life Sciences & Biomedicine
DOI10.1016/j.catena.2015.10.018
关键词[WOS]LOESS PLATEAU CHINA ; SOIL ORGANIC C ; INNER-MONGOLIA ; MICROBIAL-COMMUNITY ; SPATIAL VARIABILITY ; PHYSICAL-PROPERTIES ; PLANT-COMMUNITIES ; CENTRAL ARGENTINA ; CARBON STORAGE ; PRODUCTIVITY
收录类别SCI
语种英语
WOS研究方向Geology ; Agriculture ; Water Resources
WOS类目Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS记录号WOS:000367635800043
引用统计
被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5852
专题生态环境研究室
作者单位1.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian 710075, Shaanxi, Peoples R China
2.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
3.Xian Univ Technol, State Key Lab Base Ecohydraul Engn, Arid Area, Xian 710048, Shaanxi, Peoples R China
4.Ningxia Univ, Sch Agr, Ningxia 750021, Yinchuan, Peoples R China
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Wang, Kaibo,Deng, Lei,Ren, Zongping,et al. Grazing exclusion significantly improves grassland ecosystem C and N pools in a desert steppe of Northwest China[J]. CATENA,2016,137(2016):441-448.
APA Wang, Kaibo,Deng, Lei,Ren, Zongping,Li, Jianping,&Shangguan, Zhouping.(2016).Grazing exclusion significantly improves grassland ecosystem C and N pools in a desert steppe of Northwest China.CATENA,137(2016),441-448.
MLA Wang, Kaibo,et al."Grazing exclusion significantly improves grassland ecosystem C and N pools in a desert steppe of Northwest China".CATENA 137.2016(2016):441-448.
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