Modeling the consequences of land plant evolution on silicate weathering

Abstract:
It has long been recognized that the advent of vascular plants in the Paleozoic must have changed silicate weathering and fundamentally altered the long-term carbon cycle. Carbon cycle models are frequently employed to quantify the effect of this state change in the Earth system. These models have suggested that plants likely played a key role in modulating atmospheric CO2 in the past, with the largest plant-induced changes to the system in the late Paleozoic. These studies have, for the most part, focused on the effects of plants on weathering via their impacts on the soil environment. Yet, plants also modify the hydrological cycle, which may also have had implications for global weathering. Here, we evaluate the consequences of plant evolutionary innovation that have not been previously incorporated into carbon cycle models by coupling a one-dimensional vapor transport model to a reactive transport model of silicate weathering. Using this cascade of models, we investigate: 1) how evolutionary shifts in plant transpiration may have enhanced silicate weathering through increased downwind transport of water vapor to continental interiors; 2) the importance of deeply-rooted plants and their associated microbial communities in increasing soil CO2 and weathering zone length scales; and, 3) the coupled effect of these two processes on weathering rates. The hydrologic balance for our modeling approach is framed by energy/supply constraints (encapsulated through Budyko relationships) calibrated for minimally vegetated-, vascular plant forested-, and angiosperm-worlds. Using constraints for atmospheric vapor-transport over continents and terrestrial weathering fluxes, we find that the emergence of widespread transpiration and associated inland vapor recycling associated with the advent of deep-rooted vascular plants over the later Devonian increases weathering solute concentrations by a factor of 1.64 to 2.39 for a fixed atmospheric CO2. The later domination of ecosystems by angiosperms in the late Cretaceous and Cenozoic, and the subsequent increase in transpiration fluxes, increased weathering solute concentrations by 7 to 55 percent leading to a cumulative total increase in weathering solute concentrations by a factor of 1.70 to 2.55. Partitioning of the vapor recycling effects and feedbacks on the weathering thermodynamics indicates that 55 percent of the increases in weathering concentrations are due to the thermodynamic effects of soil CO2 with the remaining 45 percent attributable to hydrologic effects. Our estimates of the relative changes in weathering solute concentrations caused by land plant evolution are of a similar magnitude to relative flux scaling relationships implemented in existing carbon cycle models such as GEOCARBSULF (Berner, 2006), COPSE (Bergman and others, 2004), and GEOCLIM (Le Hir and others, 2011). As Phanerozoic plant evolution resulted in a more efficient generation of weathering solutes, a weaker dependence of silicate weathering on physical forcing factors such as temperature, pH of rainwater, tectonics, and prevailing lithology, must have resulted. Consequently, we postulate that terrestrial plant evolution likely contributed to a more stable climate system over the Phanerozoic.
Author Listing: Daniel E. Ibarra;Jeremy K. Caves Rugenstein;Aviv Bachan;Andres Baresch;Kimberly V. Lau;Dana L. Thomas;Jung-Eun Lee;C. Kevin Boyce;C. Page Chamberlain
Volume: 319
Pages: 1 - 43
DOI: 10.2475/01.2019.01
Language: English
Journal: American Journal of Science

AMERICAN JOURNAL OF SCIENCE

AM J SCI

影响因子:1.9 是否综述期刊:否 是否OA:否 是否预警:不在预警名单内 发行时间:1818 ISSN:0002-9599 发刊频率:Monthly 收录数据库:SCIE/Scopus收录 出版国家/地区:UNITED STATES 出版社:Yale University

期刊介绍

The American Journal of Science (AJS), founded in 1818 by Benjamin Silliman, is the oldest scientific journal in the United States that has been published continuously. The Journal is devoted to geology and related sciences and publishes articles from around the world presenting results of major research from all earth sciences. Readers are primarily earth scientists in academia and government institutions.

《美国科学杂志》(American Journal of Science,简称AJS),由本杰明·西利曼(Benjamin Silliman)于1818年创办,是美国历史最悠久的连续出版的科学期刊。该杂志致力于地质学和相关科学,发表来自世界各地的文章,介绍所有地球科学的主要研究成果。读者主要是学术界和政府机构的地球科学家。

年发文量 12
国人发稿量 3
国人发文占比 25%
自引率 0.0%
平均录取率 一般
平均审稿周期 >12周,或约稿
版面费 -
偏重研究方向 地学-地球科学综合
期刊官网 http://www.ajsonline.org/
投稿链接 http://www.ajsonline.org/site/misc/ifora.xhtml

质量指标占比

研究类文章占比 OA被引用占比 撤稿占比 出版后修正文章占比
100.00% 12.66% 0.00% 9.52%

相关指数

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期刊预警不是论文评价,更不是否定预警期刊发表的每项成果。《国际期刊预警名单(试行)》旨在提醒科研人员审慎选择成果发表平台、提示出版机构强化期刊质量管理。

预警期刊的识别采用定性与定量相结合的方法。通过专家咨询确立分析维度及评价指标,而后基于指标客观数据产生具体名单。

具体而言,就是通过综合评判期刊载文量、作者国际化程度、拒稿率、论文处理费(APC)、期刊超越指数、自引率、撤稿信息等,找出那些具备风险特征、具有潜在质量问题的学术期刊。最后,依据各刊数据差异,将预警级别分为高、中、低三档,风险指数依次减弱。

《国际期刊预警名单(试行)》确定原则是客观、审慎、开放。期刊分区表团队期待与科研界、学术出版机构一起,夯实科学精神,打造气正风清的学术诚信环境!真诚欢迎各界就预警名单的分析维度、使用方案、值得关切的期刊等提出建议!

预警情况 查看说明

时间 预警情况
2024年02月发布的2024版 不在预警名单中
2023年01月发布的2023版 不在预警名单中
2021年12月发布的2021版 不在预警名单中
2020年12月发布的2020版 不在预警名单中

JCR分区 WOS分区等级:Q2区

版本 按学科 分区
WOS期刊SCI分区
WOS期刊SCI分区是指SCI官方(Web of Science)为每个学科内的期刊按照IF数值排 序,将期刊按照四等分的方法划分的Q1-Q4等级,Q1代表质量最高,即常说的1区期刊。
(2021-2022年最新版)
GEOSCIENCES, MULTIDISCIPLINARY Q2

关于2019年中科院分区升级版(试行)

分区表升级版(试行)旨在解决期刊学科体系划分与学科发展以及融合趋势的不相容问题。由于学科交叉在当代科研活动的趋势愈发显著,学科体系构建容易引发争议。为了打破学科体系给期刊评价带来的桎梏,“升级版方案”首先构建了论文层级的主题体系,然后分别计算每篇论文在所属主题的影响力,最后汇总各期刊每篇论文分值,得到“期刊超越指数”,作为分区依据。

分区表升级版(试行)的优势:一是论文层级的主题体系既能体现学科交叉特点,又可以精准揭示期刊载文的多学科性;二是采用“期刊超越指数”替代影响因子指标,解决了影响因子数学性质缺陷对评价结果的干扰。整体而言,分区表升级版(试行)突破了期刊评价中学科体系构建、评价指标选择等瓶颈问题,能够更为全面地揭示学术期刊的影响力,为科研评价“去四唯”提供解决思路。相关研究成果经过国际同行的认可,已经发表在科学计量学领域国际重要期刊。

《2019年中国科学院文献情报中心期刊分区表升级版(试行)》首次将社会科学引文数据库(SSCI)期刊纳入到分区评估中。升级版分区表(试行)设置了包括自然科学和社会科学在内的18个大类学科。基础版和升级版(试行)将过渡共存三年时间,推测在此期间各大高校和科研院所仍可能会以基础版为考核参考标准。 提示:中科院分区官方微信公众号“fenqubiao”仅提供基础版数据查询,暂无升级版数据,请注意区分。

中科院分区 查看说明

版本 大类学科 小类学科 Top期刊 综述期刊
地球科学
2区
GEOSCIENCES, MULTIDISCIPLINARY
地球科学:综合
3区
2021年12月
基础版
地学
2区
GEOSCIENCES, MULTIDISCIPLINARY
地球科学综合
2区
2021年12月
升级版
地球科学
2区
GEOSCIENCES, MULTIDISCIPLINARY
地球科学综合
3区
2020年12月
旧的升级版
地球科学
3区
GEOSCIENCES, MULTIDISCIPLINARY
地球科学综合
3区
2022年12月
最新升级版
地球科学
3区
GEOSCIENCES, MULTIDISCIPLINARY
地球科学:综合
3区