Association with pedogenic iron and aluminum: effects on soil organic carbon storage and stability in four temperate forest soils

成土作用 土壤水分 土壤碳 土壤科学 地质学 土壤pH值 溶解 总有机碳 环境化学 化学 物理化学
作者
R. C. Porras,Caitlin Hicks Pries,Karis J. McFarlane,Paul J. Hanson,Margaret Torn
出处
期刊:Biogeochemistry [Springer Science+Business Media]
卷期号:133 (3): 333-345 被引量:90
标识
DOI:10.1007/s10533-017-0337-6
摘要

Soil organic carbon (SOC) can be stabilized via association with iron (Fe) and aluminum (Al) minerals. Fe and Al can be strong predictors of SOC storage and turnover in soils with relatively high extractable metals content and moderately acidic to circumneutral pH. Here we test whether pedogenic Fe and Al influence SOC content and turnover in soils with low Fe and Al content and acidic pH. In soils from four sites spanning three soil orders, we quantified the amount of Fe and Al in operationally-defined poorly crystalline and organically-complexed phases using selective chemical dissolution applied to the soil fraction containing mineral-associated carbon. We evaluated the correlations of Fe and Al concentrations, mean annual precipitation (MAP), mean annual temperature (MAT), and pH with SOC content and 14C-based turnover times. We found that poorly crystalline Fe and Al content predicted SOC turnover times (p < 0.0001) consistent with findings of previous studies, while organically-complexed Fe and Al content was a better predictor of SOC concentration (p < 0.0001). Greater site-level MAP (p < 0.0001) and colder site-level MAT (p < 0.0001) were correlated with longer SOC turnover times but were not correlated with SOC content. Our results suggest that poorly crystalline Fe and Al effectively slow the turnover of SOC in these acidic soils, even when their combined content in the soil is less than 2% by mass. However, in the strongly acidic Spodosol, organo-metal complexes tended to be less stable resulting in a more actively cycling mineral-associated SOC pool.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
橡树果完成签到 ,获得积分10
刚刚
完美小蘑菇应助潇湘雪月采纳,获得10
刚刚
张wx_100完成签到,获得积分10
2秒前
chenjingjing发布了新的文献求助10
2秒前
5秒前
illi发布了新的文献求助10
6秒前
8秒前
9秒前
Ava应助大青山采纳,获得10
10秒前
10秒前
2116564发布了新的文献求助10
12秒前
13秒前
婵婵发布了新的文献求助10
14秒前
ASZXDW发布了新的文献求助20
14秒前
15秒前
Orange应助1235656646采纳,获得10
16秒前
2311发布了新的文献求助10
17秒前
EDSS完成签到,获得积分10
17秒前
勤奋大地完成签到,获得积分10
19秒前
21秒前
2311完成签到,获得积分20
24秒前
共享精神应助小木安华采纳,获得10
26秒前
q1356478314应助2116564采纳,获得10
26秒前
26秒前
刘佳冉完成签到,获得积分10
26秒前
星期八发布了新的文献求助10
27秒前
万能图书馆应助潇湘雪月采纳,获得10
29秒前
黑石完成签到,获得积分10
29秒前
zpc发布了新的文献求助10
30秒前
小郭完成签到,获得积分10
31秒前
33秒前
33秒前
35秒前
文静山兰完成签到 ,获得积分10
35秒前
完美世界应助李嘉欣采纳,获得10
35秒前
Ava应助科研通管家采纳,获得10
36秒前
fd163c应助科研通管家采纳,获得10
36秒前
在水一方应助科研通管家采纳,获得10
36秒前
乐乐应助科研通管家采纳,获得10
36秒前
CAOHOU应助科研通管家采纳,获得10
36秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989390
求助须知:如何正确求助?哪些是违规求助? 3531487
关于积分的说明 11254109
捐赠科研通 3270153
什么是DOI,文献DOI怎么找? 1804887
邀请新用户注册赠送积分活动 882087
科研通“疑难数据库(出版商)”最低求助积分说明 809174