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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
Source PublicationCATENA
Volume137Issue:2016Pages:441-448
SubtypeArticle
AbstractGrazing 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.
KeywordFencing Grazing Vegetation Characteristics Soil Prosperities Carbon Sequestration Nitrogen Sequestration
WOS HeadingsScience & Technology ; Physical Sciences ; Life Sciences & Biomedicine
DOI10.1016/j.catena.2015.10.018
WOS KeywordLOESS PLATEAU CHINA ; SOIL ORGANIC C ; INNER-MONGOLIA ; MICROBIAL-COMMUNITY ; SPATIAL VARIABILITY ; PHYSICAL-PROPERTIES ; PLANT-COMMUNITIES ; CENTRAL ARGENTINA ; CARBON STORAGE ; PRODUCTIVITY
Indexed BySCI
Language英语
WOS Research AreaGeology ; Agriculture ; Water Resources
WOS SubjectGeosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS IDWOS:000367635800043
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5852
Collection生态环境研究室
Affiliation1.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
Recommended Citation
GB/T 7714
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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