NWIPB OpenIR
Nitrogen deposition impacts on the amount and stability of soil organic matter in an alpine meadow ecosystem depend on the form and rate of applied nitrogen
Fang, H. J.1; Cheng, S. L.2; Yu, G. R.1; Yang, X. M.3; Xu, M. J.2; Wang, Y. S.1; Li, L. S.2; Dang, X. S.1; Wang, L.1; Li, Y. N.4
2014-07-01
发表期刊EUROPEAN JOURNAL OF SOIL SCIENCE
ISSN1351-0754
卷号65期号:4页码:510-519
文章类型Article
摘要The effects of atmospheric nitrogen (N) deposition on carbon (C) sequestration in terrestrial ecosystems are controversial. Therefore, it is important to evaluate accurately the effects of applied N levels and forms on the amount and stability of soil organic carbon (SOC) in terrestrial ecosystems. In this study, a multi-form, small-input N addition experiment was conducted at the Haibei Alpine Meadow Ecosystem Research Station from 2007 to 2011. Three N fertilizers, NH4Cl, (NH4)(2)SO4 and KNO3, were applied at four rates: 0, 10, 20 and 40 kg N ha(-1) year(-1). One hundred and eight soil samples were collected at 10-cm intervals to a depth of 30 cm in 2011. Contents and delta C-13 values of bulk SOC were measured, as well as three particle-size fractions: macroparticulate organic C (MacroPOC, > 250 mu m), microparticulate organic C (MicroPOC, 53-250 mu m) and mineral-associated organic C (MAOC, < 53 mu m). The results show that 5 years of N addition changed SOC contents, delta C-13 values of the bulk soils and various particle-size fractions in the surface 10-cm layer, and that they were dependent on the amounts and forms of N application. Ammonium-N addition had more significant effects on SOC content than nitrate-N addition. For the entire soil profile, small additions of N increased SOC stock by 4.5% (0.43 kg C m(-2)), while medium and large inputs of N decreased SOC stock by 5.4% (0.52 kg C m(-2)) and 8.8% (0.85 kg C m(-2)), respectively. The critical load of N deposition appears to be about 20 kg N ha(-1) year(-1). The newly formed C in the small-input N treatment remained mostly in the > 250 mu m soil MacroPOC, and the C lost in the medium or large N treatments was from the > 53 mu m POC fraction. Five years of ammonium-N addition increased significantly the surface soil POC:MAOC ratio and increased the instability of soil organic matter (SOM). These results suggest that exogenous N input within the critical load level will benefit C sequestration in the alpine meadow soils on the Qinghai-Tibetan Plateau over the short term.; The effects of atmospheric nitrogen (N) deposition on carbon (C) sequestration in terrestrial ecosystems are controversial. Therefore, it is important to evaluate accurately the effects of applied N levels and forms on the amount and stability of soil organic carbon (SOC) in terrestrial ecosystems. In this study, a multi-form, small-input N addition experiment was conducted at the Haibei Alpine Meadow Ecosystem Research Station from 2007 to 2011. Three N fertilizers, NH4Cl, (NH4)(2)SO4 and KNO3, were applied at four rates: 0, 10, 20 and 40 kg N ha(-1) year(-1). One hundred and eight soil samples were collected at 10-cm intervals to a depth of 30 cm in 2011. Contents and delta C-13 values of bulk SOC were measured, as well as three particle-size fractions: macroparticulate organic C (MacroPOC, > 250 mu m), microparticulate organic C (MicroPOC, 53-250 mu m) and mineral-associated organic C (MAOC, < 53 mu m). The results show that 5 years of N addition changed SOC contents, delta C-13 values of the bulk soils and various particle-size fractions in the surface 10-cm layer, and that they were dependent on the amounts and forms of N application. Ammonium-N addition had more significant effects on SOC content than nitrate-N addition. For the entire soil profile, small additions of N increased SOC stock by 4.5% (0.43 kg C m(-2)), while medium and large inputs of N decreased SOC stock by 5.4% (0.52 kg C m(-2)) and 8.8% (0.85 kg C m(-2)), respectively. The critical load of N deposition appears to be about 20 kg N ha(-1) year(-1). The newly formed C in the small-input N treatment remained mostly in the > 250 mu m soil MacroPOC, and the C lost in the medium or large N treatments was from the > 53 mu m POC fraction. Five years of ammonium-N addition increased significantly the surface soil POC:MAOC ratio and increased the instability of soil organic matter (SOM). These results suggest that exogenous N input within the critical load level will benefit C sequestration in the alpine meadow soils on the Qinghai-Tibetan Plateau over the short term.
WOS标题词Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]QINGHAI-TIBETAN PLATEAU ; STABLE CARBON-ISOTOPE ; GRASSLAND SOILS ; TURNOVER ; ADDITIONS ; DYNAMICS ; LABILE ; MINERALIZATION ; COMPETITION ; RESPONSES
收录类别SCI
语种英语
WOS研究方向Agriculture
WOS类目Soil Science
WOS记录号WOS:000339381200009
引用统计
被引频次:35[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/4214
专题中国科学院西北高原生物研究所
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
3.Agr & Agri Food Canada, Greenhouse & Proc Crops Res Ctr, Harrow, ON N0R 1G0, Canada
4.Chinese Acad Sci, Northwest Plateau Inst Biol, Xining 810001, Peoples R China
推荐引用方式
GB/T 7714
Fang, H. J.,Cheng, S. L.,Yu, G. R.,et al. Nitrogen deposition impacts on the amount and stability of soil organic matter in an alpine meadow ecosystem depend on the form and rate of applied nitrogen[J]. EUROPEAN JOURNAL OF SOIL SCIENCE,2014,65(4):510-519.
APA Fang, H. J..,Cheng, S. L..,Yu, G. R..,Yang, X. M..,Xu, M. J..,...&Li, Y. N..(2014).Nitrogen deposition impacts on the amount and stability of soil organic matter in an alpine meadow ecosystem depend on the form and rate of applied nitrogen.EUROPEAN JOURNAL OF SOIL SCIENCE,65(4),510-519.
MLA Fang, H. J.,et al."Nitrogen deposition impacts on the amount and stability of soil organic matter in an alpine meadow ecosystem depend on the form and rate of applied nitrogen".EUROPEAN JOURNAL OF SOIL SCIENCE 65.4(2014):510-519.
条目包含的文件 下载所有文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Nitrogen deposition (1205KB) 开放获取CC BY-NC-SA浏览 下载
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Fang, H. J.]的文章
[Cheng, S. L.]的文章
[Yu, G. R.]的文章
百度学术
百度学术中相似的文章
[Fang, H. J.]的文章
[Cheng, S. L.]的文章
[Yu, G. R.]的文章
必应学术
必应学术中相似的文章
[Fang, H. J.]的文章
[Cheng, S. L.]的文章
[Yu, G. R.]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Nitrogen deposition impacts on the amount and stability of soil organic matter in an alpine meadow ecosystem depend on the form and rate of applied nitrogen.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。