气候变化领域集成服务门户(CCPortal): Nitrogen cycling in tropical dry forests is sensitive to changes in rainfall regime and nitrogen deposition

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DOI	10.1007/s10533-021-00788-6
	Nitrogen cycling in tropical dry forests is sensitive to changes in rainfall regime and nitrogen deposition
	Rivero-Villar A.; Ruiz-Suárez G.; Templer P.H.; Souza V.; Campo J.
发表日期	2021
ISSN	1682563
起始页码	283
结束页码	302
卷号	153 期号:3
英文摘要	The impacts of changes in rainfall regimes and atmospheric nitrogen (N) deposition on the biogeochemical cycles of tropical dry forests (TDF) remain unclear. To analyze whether amounts of mean annual rainfall (1240 mm year−1 in subhumid vs. 642 mm year−1 in semiarid forests) and rates of atmospheric N deposition affect the N cycle in TDF, we examined N concentrations in (i) green leaves, (ii) forest floor and mineral soil layers, and (iii) soil microbial biomass, as well as (iv) δ15N natural abundance in green leaves and (v) rates of soil enzyme activity and (vi) N losses in two sites (one subhumid and another semiarid) of Yucatan. The semiarid site had higher N concentrations in leaves and both soil layers than its subhumid counterpart. Natural abundance δ15N in the vegetation suggests a more open N cycle with lower rates of rainfall, which was corroborated by N losses as nitrous oxide (N2O) being twice as high in the semiarid compared to subhumid site. A more open N cycle subject to greater losses in response to N addition in the semiarid site, but not in the subhumid site, reinforce that rainfall amounts strongly affect N cycling in TDF. © 2021, The Author(s), under exclusive licence to Springer Nature Switzerland AG.
英文关键词	15N natural abundance; Drought; ENSO; Mexico; N losses; N2O emissions
语种	英语
来源期刊	Biogeochemistry
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/184605
作者单位	Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico; Centro de Ciencias de la Atmósfera, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico; Department of Biology, Boston University, Boston, MA 02215, United States
推荐引用方式 GB/T 7714	Rivero-Villar A.,Ruiz-Suárez G.,Templer P.H.,et al. Nitrogen cycling in tropical dry forests is sensitive to changes in rainfall regime and nitrogen deposition[J],2021,153(3).
APA	Rivero-Villar A.,Ruiz-Suárez G.,Templer P.H.,Souza V.,&Campo J..(2021).Nitrogen cycling in tropical dry forests is sensitive to changes in rainfall regime and nitrogen deposition.Biogeochemistry,153(3).
MLA	Rivero-Villar A.,et al."Nitrogen cycling in tropical dry forests is sensitive to changes in rainfall regime and nitrogen deposition".Biogeochemistry 153.3(2021).