Short-versus long-term effects of nitrogen addition and warming on soil nitrogen mineralization and leaching in a grass-dominated old field

IF 2.3 2区 环境科学与生态学 Q2 ECOLOGY Oecologia Pub Date : 2024-04-27 DOI:10.1007/s00442-024-05549-4
Benjamin F. A. Souriol, Hugh A. L. Henry
{"title":"Short-versus long-term effects of nitrogen addition and warming on soil nitrogen mineralization and leaching in a grass-dominated old field","authors":"Benjamin F. A. Souriol, Hugh A. L. Henry","doi":"10.1007/s00442-024-05549-4","DOIUrl":null,"url":null,"abstract":"<p>Increased atmospheric nitrogen (N) deposition and climate warming are both anticipated to influence the N dynamics of northern temperate ecosystems substantially over the next century. In field experiments with N addition and warming treatments, cumulative treatment effects can be important for explaining variation in treatment effects on N dynamics over time; however, comparisons between data collected in the early vs. later years potentially can be confounded with interactions between treatment effects and inter-annual variation in environmental conditions or other factors. We compared the short-term versus long-term effects of N addition and warming on net N mineralization and N leaching in a grass-dominated old field using in situ soil cores. We added new N addition and warming plots (3 years old) to an existing field experiment (16 years old), which enabled comparison of the treatment effects at both time scales while controlling for potential inter-annual variation in other factors. For net N mineralization, there was a significant interaction between plot age and N addition over the growing season, and for extractable inorganic N there was a significant interaction between plot age and warming over winter. In both cases, the directions of the treatment effects differed among old and new plots. Moreover, the responses in the new plots differed from the responses observed previously when the 16-year-old plots had been new. These results demonstrate how inter-annual variation in responses, independent from cumulative treatment effects, can play an important role in interpreting long-term effects on soil N cycling in global change field experiments.</p>","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"4 1","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Oecologia","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1007/s00442-024-05549-4","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ECOLOGY","Score":null,"Total":0}
引用次数: 0

Abstract

Increased atmospheric nitrogen (N) deposition and climate warming are both anticipated to influence the N dynamics of northern temperate ecosystems substantially over the next century. In field experiments with N addition and warming treatments, cumulative treatment effects can be important for explaining variation in treatment effects on N dynamics over time; however, comparisons between data collected in the early vs. later years potentially can be confounded with interactions between treatment effects and inter-annual variation in environmental conditions or other factors. We compared the short-term versus long-term effects of N addition and warming on net N mineralization and N leaching in a grass-dominated old field using in situ soil cores. We added new N addition and warming plots (3 years old) to an existing field experiment (16 years old), which enabled comparison of the treatment effects at both time scales while controlling for potential inter-annual variation in other factors. For net N mineralization, there was a significant interaction between plot age and N addition over the growing season, and for extractable inorganic N there was a significant interaction between plot age and warming over winter. In both cases, the directions of the treatment effects differed among old and new plots. Moreover, the responses in the new plots differed from the responses observed previously when the 16-year-old plots had been new. These results demonstrate how inter-annual variation in responses, independent from cumulative treatment effects, can play an important role in interpreting long-term effects on soil N cycling in global change field experiments.

Abstract Image

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
增氮和升温对草地为主的老田中土壤氮矿化和沥滤的短期和长期影响
预计大气中氮(N)沉积的增加和气候变暖都将在下个世纪对北温带生态系统的氮动态产生重大影响。在氮添加和气候变暖处理的田间试验中,累积处理效应对于解释处理效应对氮动态随时间的变化非常重要;然而,早期与晚期收集的数据之间的比较可能会被处理效应与环境条件或其他因素的年际变化之间的相互作用所混淆。我们利用原位土壤岩心,比较了添加氮和升温对以禾本科植物为主的老田中净氮矿化和氮浸出的短期和长期影响。我们在现有田间试验(16 年)的基础上增加了新的氮添加地块和增温地块(3 年),这样既可以比较两个时间尺度的处理效果,又可以控制其他因素的潜在年际变化。在净氮矿化度方面,地块年龄与生长季节的氮添加量之间存在显著的交互作用;在可提取的无机氮方面,地块年龄与冬季升温之间存在显著的交互作用。在这两种情况下,新老地块的处理效应方向不同。此外,新地块的反应与之前观察到的 16 年新地块的反应不同。这些结果表明,在解释全球变化实地实验对土壤氮循环的长期影响时,反应的年际变化(与累积处理效应无关)可以发挥重要作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Oecologia
Oecologia 环境科学-生态学
CiteScore
5.10
自引率
0.00%
发文量
192
审稿时长
5.3 months
期刊介绍: Oecologia publishes innovative ecological research of international interest. We seek reviews, advances in methodology, and original contributions, emphasizing the following areas: Population ecology, Plant-microbe-animal interactions, Ecosystem ecology, Community ecology, Global change ecology, Conservation ecology, Behavioral ecology and Physiological Ecology. In general, studies that are purely descriptive, mathematical, documentary, and/or natural history will not be considered.
期刊最新文献
Pollen specialist bee species are accurately predicted from visitation, occurrence and phylogenetic data. Climate warming and temporal variation in reproductive strategies in the endangered meadow viper. Urbanization-induced simplification of isotopic space in birds from a big Neotropical city. Does manganese influence grass litter decomposition on a Hawaiian rainfall gradient? Increased temperatures could heighten vulnerability of an ant-plant mutualism.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1