Soil basal respiration and nitrogen mineralization from C3 and C4 grass dominated plant communities respond differently to temperature and soil water variation

IF 2.6 3区 环境科学与生态学 Q2 ECOLOGY Journal of Arid Environments Pub Date : 2024-07-24 DOI:10.1016/j.jaridenv.2024.105235
{"title":"Soil basal respiration and nitrogen mineralization from C3 and C4 grass dominated plant communities respond differently to temperature and soil water variation","authors":"","doi":"10.1016/j.jaridenv.2024.105235","DOIUrl":null,"url":null,"abstract":"<div><p>Key environmental influences on soil basal respiration (Rs) and nitrogen mineralization (ΔIN) are temperature and soil water content (SWC) and both are being altered by climate change. Yet we cannot expect that variation in temperature and SWC will equally affect all ecosystems. We examine the influences of temperature and SWC on R<sub>s</sub> and ΔIN in two grassland plant communities dominated by C3 or C4 species. We collected soil samples from these communities and incubated them at temperatures (5 °C, 10 °C, 15 °C, and 25 °C) and four SWC (10%, 20%, 30% and 40% by weight). After four one-month incubation experiments, we found that (1) plant communities, temperature, and SWC significantly influenced R<sub>s</sub> and ΔIN; (2) the highest R<sub>s</sub> and ΔIN occurred at 25 °C and 30% SWC in the C4 plant community; (3) in the driest soils, N was immobilized in both communities regardless of temperature. We suggest that there is a greater limitation to C and N mineralization in the C3 plant community than in the C4 plant community making the C3 community less sensitive to variation in temperature and SWC.</p></div>","PeriodicalId":51080,"journal":{"name":"Journal of Arid Environments","volume":null,"pages":null},"PeriodicalIF":2.6000,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Arid Environments","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0140196324001150","RegionNum":3,"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

Key environmental influences on soil basal respiration (Rs) and nitrogen mineralization (ΔIN) are temperature and soil water content (SWC) and both are being altered by climate change. Yet we cannot expect that variation in temperature and SWC will equally affect all ecosystems. We examine the influences of temperature and SWC on Rs and ΔIN in two grassland plant communities dominated by C3 or C4 species. We collected soil samples from these communities and incubated them at temperatures (5 °C, 10 °C, 15 °C, and 25 °C) and four SWC (10%, 20%, 30% and 40% by weight). After four one-month incubation experiments, we found that (1) plant communities, temperature, and SWC significantly influenced Rs and ΔIN; (2) the highest Rs and ΔIN occurred at 25 °C and 30% SWC in the C4 plant community; (3) in the driest soils, N was immobilized in both communities regardless of temperature. We suggest that there is a greater limitation to C and N mineralization in the C3 plant community than in the C4 plant community making the C3 community less sensitive to variation in temperature and SWC.

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
C3和C4禾本科植物群落的土壤基础呼吸作用和氮矿化作用对温度和土壤水分变化的反应不同
影响土壤基本呼吸作用(Rs)和氮矿化作用(ΔIN)的主要环境因素是温度和土壤含水量(SWC),而气候变化正在改变这两个因素。然而,我们不能指望温度和 SWC 的变化会对所有生态系统产生同样的影响。我们研究了两种以 C3 或 C4 物种为主的草地植物群落中温度和 SWC 对 R 和 ΔIN 的影响。我们从这些群落中采集了土壤样本,并在温度(5 °C、10 °C、15 °C和25 °C)和四种SWC(按重量计分别为10%、20%、30%和40%)条件下进行培养。经过四个为期一个月的培养实验,我们发现:(1) 植物群落、温度和 SWC 对 R 和 ΔIN 有显著影响;(2) C4 植物群落在 25 °C 和 30% SWC 条件下的 R 和 ΔIN 最高;(3) 在最干旱的土壤中,无论温度如何,氮在两个群落中都被固定。我们认为,与 C4 植物群落相比,C3 植物群落对 C 和 N 矿化的限制更大,因此 C3 植物群落对温度和 SWC 变化的敏感性较低。
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
Journal of Arid Environments
Journal of Arid Environments 环境科学-环境科学
CiteScore
5.70
自引率
3.70%
发文量
144
审稿时长
55 days
期刊介绍: The Journal of Arid Environments is an international journal publishing original scientific and technical research articles on physical, biological and cultural aspects of arid, semi-arid, and desert environments. As a forum of multi-disciplinary and interdisciplinary dialogue it addresses research on all aspects of arid environments and their past, present and future use.
期刊最新文献
Investigating the impacts of climate variations and armed conflict on drought and vegetation cover in Northeast Syria (2000–2023) Corrigendum to “Bringing water values into play in the Atacama desert water crisis” [J. Arid Environ. (2024) 1–12 105256] When environment meets culture in the arid margin of the Southern Levant Hydrological dichotomy: Streamflow drought in dammed vs. undammed regions of the largest Indian Peninsular basin Characterizing the dynamics of climate and native desert plants in Qatar
×
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