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
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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 |
DOI | 10.1016/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 |
推荐引用方式 GB/T 7714 | 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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