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Seasonal and Spatial Variations of Bulk Nitrogen Deposition and the Impacts on the Carbon Cycle in the Arid/Semiarid Grassland of Inner Mongolia, China

文献类型：期刊论文

作者Li, Xianglan1,2,3; Shi, Huiqiu4,5; Xu, Wenfang5,6; Liu, Wei4,5; Wang, Xiujun2,3,7; Hou, Longyu4; Feng, Fei2,3; Yuan, Wenping8; Li, Linghao4; Xu, Hua1
刊名PLOS ONE
出版日期2015-12-22
卷号10期号:12页码:16
ISSN号1932-6203
DOI10.1371/journal.pone.0144689
通讯作者Yuan, Wenping(yuanwpcn@126.com)
英文摘要Atmospheric nitrogen (N) deposition is an important component that affects the structure and function of different terrestrial ecosystem worldwide. However, much uncertainty still remains concerning the magnitude of N deposition on grassland ecosystem in China. To study the spatial and temporal patterns of bulk N deposition, the levels of N (NH4+-N and NO3--N) concentration in rainfall were measured at 12 sites across a 1200 km grassland transect in Inner Mongolia, China, and the respective N deposition rates were estimated. The inorganic N deposition rates ranged from 4.53 kg N ha(-1) to 12.21 kg N ha(-1) with a mean value of 8.07 kg N ha(-1) during the entire growing season, decreasing steadily from the eastern to the western regions. Inorganic N deposition occurred mainly in July and August across meadow steppe, typical steppe, and desert steppe, which corresponded to the seasonal distribution of mean annual precipitation. A positive relationship was found between inorganic N deposition and mean annual precipitation (R-2 = 0.54 similar to 0.72, P < 0.0001) across the grassland transect. Annual estimation of inorganic N deposition was 0.67 Pg yr(-1) in Inner Mongolia, China based on the correlation between N deposition rates and precipitation. N deposition was an important factor controlling aboveground biomass and ecosystem respiration, but has no effect on root biomass and soil respiration. We must clarify that we used the bulk deposition samplers during the entire sampling process and estimated the dissolved NH4+-N and NO3--N deposition rates during the entire growing season. Long-term N deposition monitoring networks should be constructed to study the patterns of N deposition and its potential effect on grassland ecosystem, considering various N species, i.e., gaseous N, particle N, and wet N deposition.
收录类别SCI
WOS关键词REGIONAL ENVIRONMENTAL ASSESSMENTS ; TIME-SERIES DATASET ; TERRESTRIAL ECOSYSTEMS ; WET DEPOSITION ; N DEPOSITION ; FORESTS ; INCREASE ; FLUXES ; AGROECOSYSTEMS ; LIMITATION
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
语种英语
出版者PUBLIC LIBRARY SCIENCE
WOS记录号WOS:000367092500008
URI标识http://www.irgrid.ac.cn/handle/1471x/2557153
专题寒区旱区环境与工程研究所
通讯作者Yuan, Wenping
作者单位1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing, Jiangsu, Peoples R China
2.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing 100875, Peoples R China
3.Joint Ctr Global Change Studies, Beijing, Peoples R China
4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
5.Univ Chinese Acad Sci, Beijing, Peoples R China
6.Chinese Acad Sci, State Key Lab Cryospher Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou, Gansu, Peoples R China
7.Univ Maryland, Earth Syst Sci Interdisciplinary Ctr, College Pk, MD 20742 USA
8.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China
推荐引用方式
GB/T 7714		 Li, Xianglan,Shi, Huiqiu,Xu, Wenfang,et al. Seasonal and Spatial Variations of Bulk Nitrogen Deposition and the Impacts on the Carbon Cycle in the Arid/Semiarid Grassland of Inner Mongolia, China[J]. PLOS ONE,2015,10(12):16.
APA Li, Xianglan.,Shi, Huiqiu.,Xu, Wenfang.,Liu, Wei.,Wang, Xiujun.,...&Xu, Hua.(2015).Seasonal and Spatial Variations of Bulk Nitrogen Deposition and the Impacts on the Carbon Cycle in the Arid/Semiarid Grassland of Inner Mongolia, China.PLOS ONE,10(12),16.
MLA Li, Xianglan,et al."Seasonal and Spatial Variations of Bulk Nitrogen Deposition and the Impacts on the Carbon Cycle in the Arid/Semiarid Grassland of Inner Mongolia, China".PLOS ONE 10.12(2015):16.

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