Foliar and soil n-15 natural abundances provide field evidence on nitrogen dynamics in temperate and boreal forest ecosystems
文献类型：期刊论文
| 作者 | Cheng, Shu-Lan1,2; Fang, Hua-Jun1; Yu, Gui-Rui1; Zhu, Tian-Hong2; Zheng, Jiao-Jiao2 |
| 刊名 | Plant and soil
 |
| 出版日期 | 2010-12-01 |
| 卷号 | 337期号:1-2页码:285-297 |
| 关键词 | N-15 natural abundance N availability N transformation N loss Enrichment factor Mountain transect |
| ISSN号 | 0032-079X |
| DOI | 10.1007/s11104-010-0524-x |
| 通讯作者 | Fang, hua-jun(huajunfang@yahoo.com.cn) |
| 英文摘要 | The natural abundance of n-15 (delta n-15) in plants and soils is an ideal tool for assessing ecosystem n dynamics. however, many of the mechanisms driving the variability of foliar and soil delta n-15 values within and across ecosystems are still unclear. in this study, we analyzed the patterns of n concentrations and delta n-15 values in leaves, bulk soils and soil mineral n as well as soil n turnover rates across four temperate and boreal forest ecosystems along a mountain transect. the results showed that plant species and soil properties directly controlled soil delta n-15 patterns and climate factors (air temperature and precipitation) indirectly affected foliar delta n-15 patterns. foliar n concentrations varied consistently with the concentrations of soil available n and soil no (3) (-) -n, whereas foliar delta n-15 was most closely associated with the delta n-15 of soil nh (4) (+) , the most abundant form of n in soil solution. n-15 enrichment in surface mineral soil in high elevation forests was mainly attributed to n-15-enriched organic n accumulation. furthermore, the foliar enrichment factor (epsilon(p/s) = i ' n-15(foliage)-i ' n-15(soil)) was significantly correlated with n transformation and loss rates, and was negatively correlated with the ratio of nh (4) (+) to total inorganic n. these results suggest that foliar delta n-15 value and foliar n concentration together accurately reflect the n availability of forest ecosystems. foliar epsilon(p/s) can act as an integrated proxy to reflect the status of n cycling within or across forest ecosystems. soil nitrification and species' nh (4) (+) to no (3) (-) uptake ratios are key processes controlling foliar delta n-15 patterns in n-limited forest ecosystems. our findings improve the mechanistic understanding of the commonly observed variability in foliar and soil delta n-15 within and across forest ecosystems. |
| WOS关键词 | MYCORRHIZAL FUNGI ; N-MINERALIZATION ; CARBON-CYCLE ; DELTA-N-15 ; PLANT ; GRADIENT ; AVAILABILITY ; PATTERNS ; NITRATE ; ENRICHMENT |
| WOS研究方向 | Agriculture ; Plant Sciences |
| WOS类目 | Agronomy ; Plant Sciences ; Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000284159900021 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2410319 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Fang, Hua-Jun |
| 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.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Shu-Lan,Fang, Hua-Jun,Yu, Gui-Rui,et al. Foliar and soil n-15 natural abundances provide field evidence on nitrogen dynamics in temperate and boreal forest ecosystems[J]. Plant and soil,2010,337(1-2):285-297. |
| APA | Cheng, Shu-Lan,Fang, Hua-Jun,Yu, Gui-Rui,Zhu, Tian-Hong,&Zheng, Jiao-Jiao.(2010).Foliar and soil n-15 natural abundances provide field evidence on nitrogen dynamics in temperate and boreal forest ecosystems.Plant and soil,337(1-2),285-297. |
| MLA | Cheng, Shu-Lan,et al."Foliar and soil n-15 natural abundances provide field evidence on nitrogen dynamics in temperate and boreal forest ecosystems".Plant and soil 337.1-2(2010):285-297. |
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来源：中国科学院大学
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