中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Effects of long-term nitrogen addition on the shift of nitrogen cycle from open to closed along an age gradient of larch plantations in North China

文献类型:期刊论文

作者Yan, Tao1,2,5; Fang, Yunting2,3; Wang, Jinsong4; Song, Huanhuan1; Zhong, Tianyu1; Wang, Peilin1
刊名SOIL BIOLOGY & BIOCHEMISTRY
出版日期2024-04-01
卷号191页码:8
关键词15N natural abundance Nitrogen deposition Stand age Temperate forest Soil N transformation N acquisition strategy
ISSN号0038-0717
DOI10.1016/j.soilbio.2023.109295
通讯作者Yan, Tao(yant@lzu.edu.cn)
英文摘要The 15N:14N ratio (815N) is often used as an integrated indicator of nitrogen (N) status in natural terrestrial ecosystems. However, the mechanisms by which long-term N addition affects N cycling and status in temperate plantations with different ages remain poorly understood. Here, we used an approach of leaf-soil continuum of 815N with the combination of incubation experiments to evaluate the effects of three rates of decadal N addition (urea) on N status in young, intermediate, and mature larch (Larix principis-rupprechtii) plantations in northern China. We found that leaf 815N decreased significantly from 1.6%o in young trees to -0.5%o and -1.0%o in intermediate and mature trees, respectively, due to increases in the use of NO- 3-N relative to NH+ 4-N with stand age, and probably a shift in N acquisition from mineral soil in the young plantation to organic and/or surface mineral soil layers in the intermediate and mature plantations. Decadal N addition decreased leaf 815N, which was likely to be due to the direct imprints of 15N -depleted urea input, the inhibition of soil net mineralization, and nitrification, and greater dependence on N absorption by ectomycorrhizal fungi after N addition. Soil 815N decreased with stand age, which was likely to be due to reduced soil N transformation (e.g., mineralization) and/ or relative abundance of ectomycorrhizal fungi along the chronosequence; however, soil 815N was not affected by long-term N inputs. Combined with the decreased enrichment factor (epsilon = 815Nleaf - 815Nsoil), these results suggest a shift from more open N cycling (potentially greater ecosystem N losses) in young plantation to more closed N cycling (facilitation of ecosystem N retention) in mature plantation, which showed negative response to decadal N addition. These findings provide new insights into N acquisition strategies and cycling in the typically Nlimited temperate plantations under heightened atmospheric N deposition.
WOS关键词N-15 NATURAL-ABUNDANCE ; SOIL N AVAILABILITY ; MYCORRHIZAL FUNGI ; ISOTOPE PATTERNS ; ECTOMYCORRHIZAL FUNGI ; STABLE NITROGEN ; BOREAL FORESTS ; RAIN-FOREST ; STAND AGE ; TEMPERATE
资助项目National Natural Science Foundation of China[32171762] ; Lanzhou University's Double First-Class Guided Project Team Building-Funding-Research Startup Fee ; [32192431]
WOS研究方向Agriculture
语种英语
WOS记录号WOS:001174238700001
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构National Natural Science Foundation of China ; Lanzhou University's Double First-Class Guided Project Team Building-Funding-Research Startup Fee
源URL[http://ir.igsnrr.ac.cn/handle/311030/203576]  
专题中国科学院地理科学与资源研究所
通讯作者Yan, Tao
作者单位1.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosystems, Lanzhou 730000, Peoples R China
2.Natl Observat & Res Stn, Qingyuan Forest CERN, Shenyang 110016, Liaoning, Peoples R China
3.Chinese Acad Sci, Inst Appl Ecol, Key Lab Forest Ecol & Management, Shenyang 110016, Peoples R China
4.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
5.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, 768 Jiayuguan West Rd, Lanzhou 730020, Gansu, Peoples R China
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Yan, Tao,Fang, Yunting,Wang, Jinsong,et al. Effects of long-term nitrogen addition on the shift of nitrogen cycle from open to closed along an age gradient of larch plantations in North China[J]. SOIL BIOLOGY & BIOCHEMISTRY,2024,191:8.
APA Yan, Tao,Fang, Yunting,Wang, Jinsong,Song, Huanhuan,Zhong, Tianyu,&Wang, Peilin.(2024).Effects of long-term nitrogen addition on the shift of nitrogen cycle from open to closed along an age gradient of larch plantations in North China.SOIL BIOLOGY & BIOCHEMISTRY,191,8.
MLA Yan, Tao,et al."Effects of long-term nitrogen addition on the shift of nitrogen cycle from open to closed along an age gradient of larch plantations in North China".SOIL BIOLOGY & BIOCHEMISTRY 191(2024):8.

入库方式: OAI收割

来源:地理科学与资源研究所

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