Prolonged Storage of Bound Organic Carbon in Wetland but Not Upland Soils: A 13C and 14C Perspective DOI Creative Commons
Tian Ma,

Yiyun Wang,

Guohua Dai

et al.

Geophysical Research Letters, Journal Year: 2024, Volume and Issue: 52(1)

Published: Dec. 28, 2024

Abstract Protection by metal (hydr) oxides is one of the key mechanisms for long‐term stabilization soil organic carbon (SOC). However, source and turnover (metal‐) bound (OC) in soils are poorly constrained. Here we present first large‐scale study on 13 C 14 characteristics OC 15 wetland upland profiles. We find that has similar δ as SOC, suggesting no preference plant‐ or microbe‐derived carbon. Δ more negative than SOC but not mineral soils, decreases with increasing reactive minerals. Hence, contrast to conventional assumption, better preserved relative wetlands high contents metals. Our finding highlights dynamic exchange calls a recognition metals stabilizing wetlands.

Language: Английский

Important role of Fe oxides in global soil carbon stabilization and stocks DOI Creative Commons

Nan Jia,

Lei Li, Hui Guo

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Nov. 28, 2024

Iron (Fe) oxides can interact with soil organic carbon (SOC) to form Fe-bound (OC-Fe), which strongly promotes SOC protection, mitigating global climate change. However, the patterns and factors controlling OC-Fe are unclear. Here, we conducted a meta-analysis of 3,395 globally distributed profiles reveal role Fe-Al in stabilization stocks. The stock topsoil is 233 PgC, accounting for 33 ± 15% total stock. A substantial deficit (difference between OC-Femax) was observed at equator mid-latitudes. Our findings suggest that mineral should be incorporated into models improve model predictions. Although there uncertainties current extraction method, distribution OC-Femax constitutes vital resource future research targeting cycling issues offers innovative strategies sequestration initiatives. stabilize globally, (233 PgC). evident mid-latitudes, highlighting opportunities

Language: Английский

Citations

6
Restoration recovers plant diversity but changes species composition and biomass allocation in an alpine peatland DOI Creative Commons

Ning Liu,

Yang Li, Quancheng Wang

et al.

Ecological Processes, Journal Year: 2025, Volume and Issue: 14(1)

Published: March 3, 2025

Abstract Background The Zoige Plateau hosts the largest alpine peatland in world, playing a crucial role carbon sequestration and biodiversity conservation. However, this valuable ecosystem has been significantly impacted by anthropogenic drainage for various purposes, prompting increased interests ecological restoration efforts. This study evaluates changes plant diversity, community composition, biomass allocation across natural, drained, rewetted peatlands, with particular focus on variations microtopography, including hollows hummocks. Results Restoration showed higher soil water content, which was 11.6% (to 88.5 ± 0.09%) 14.4% hummocks 81.1 1.6%) of peatlands compared to natural ( p < 0.001). table depth did not differ from that = 0.61). While management affect microtopography had considerable impact species richness, dominance, Shannon–Wiener index, evenness. Conversely, composition exhibited significant differences among at both hollow hummock microsites. Aboveground drained microsites, whereas belowground lower particularly Conclusions Rewetting raises but does fully restore original or biomass. Microtopography plays vital influencing diversity showing greater resilience impacts. Our findings emphasize consequences practices highlight need targeted strategies strengthen these ecosystems.

Language: Английский

Citations

0
Plant–microbe interactions underpin contrasting enzymatic responses to wetland drainage DOI
Yunpeng Zhao,

Chengzhu Liu,

Enze Kang

et al.

Nature Climate Change, Journal Year: 2024, Volume and Issue: 14(10), P. 1078 - 1086

Published: Aug. 15, 2024

Language: Английский

Citations

2
Changing plant phosphorus acquisition strategies in relation to altered soil phosphorus fractions after wetland drainage DOI Creative Commons
Zhenhui Jiang,

Wanqing Luo,

Erxiong Zhu

et al.

Functional Ecology, Journal Year: 2024, Volume and Issue: 38(11), P. 2433 - 2446

Published: Sept. 9, 2024

Abstract Plant phosphorus (P) acquisition strategy is considered to be an intrinsic driver behind plant succession. However, variations in P strategies connection soil fraction changes after wetland drainage remain unclear. To address this issue, here we conducted a study six distinct wetlands that experienced long‐term (>20 years) artificial drainage, with the adjacent waterlogged as control. We analysed community composition, biomass and fractions, identified three based on acid phosphatase activity, resorption efficiency, arbuscular mycorrhizal fungi (AMF) content. found calcium‐bound (P Ca ) enzyme‐extractable enzyme were key factors influencing acquisition. Soil correlated negatively activity but positively AMF impacted efficiency. The categorised into types change richness each exhibiting strategies. These corresponded shifts fractions. Overall, our highlights role of fractions explaining suggesting regulations succession ecosystem services. Read free Plain Language Summary for article Journal blog.

Language: Английский

Citations

2
Variation of soil organic carbon stability in restored mountain marsh wetlands DOI Creative Commons
Xin Yang, Zheng Jiao, Dan Yang

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Oct. 10, 2024

The replacement of farmland by native hygro-plants is increasingly common globally within the context wetland ecosystem restoration. Understanding long-term effects this on abundance and persistence soil organic carbon (SOC) in mountain marshes important for management. Here, restored plateau Duliu River Wetland Provincial Nature Reserve, China was selected. properties, moisture content (SMC), pH, texture, free-form iron oxides ( $$\:{\text{F}\text{e}}_{\text{d}}$$ ), amorphous $$\:{\text{F}\text{e}}_{\text{o}}$$ mineral-associated (MAOC), iron-bound (Fe-OC) were analyzed topsoil samples (0 ~ 20 cm) during restoration rice paddies to Sphagnum palustre L. wetlands 0, 2, 10, years. Natural also used as control. We found that marsh increased SMC, , / SOC, MAOC, Fe-OC, Fe-OC/SOC, but decreased MAOC/SOC ratio. ratio expectedly lower than proportion labile SOC total period. MAOC higher natural other habitats. Both Fe-OC/SOC positively correlated with negatively pH. . These results emphasized significance reconverting increasing sequestration Fe-OC. Further studies are required identify quantify organo-mineral stabilization mechanisms at different fractionations throughout

Language: Английский

Citations

1
Interaction between metal(loid)s and soil mineral-organic matter associations DOI
Xinyang Li, Michael Schindler, Jiawen Zhou

et al.

Critical Reviews in Environmental Science and Technology, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 24

Published: Dec. 2, 2024

Mineral-organic matter (OM) associations sequester metal(loid)s in the environment, controlling their mobility and bioavailability soils. This review describes processes mechanisms operating at interfaces between OM mineral phases mineral-metal(loid)-OM metal(loid)-OM-mineral associations. It will demonstrate assumption that interact with "pure" matrixes soils is overly simplistic as numerous interactions such adsorption, precipitation incorporation of on surfaces, or within minerals can occur. For example, multi-layer organic compounds control regulate carbon sequestration. To simplify complex metal(loid)-mineral-OM interactions, we propose five nanometric for sequestration by mineral-OM associations: I. heterogeneous nucleation metal(loid)s-bearing nanomaterials (NMs) matrix, II. NMs via reduction metal(loid) species OM/mineral III. transformation preexisting NMs, IV. inclusions V. diffusion homogeneous distribution metals matrix. helps to develop potential materials (a) remediation techniques allow effective removal metal pollutants from water soil (b) biomass storage sequestrate stabilize terrestrial systems thus help fight current climate change. Future studies need identify spatial functional complexity structure composition associations, which adsorbed incorporated transform during multi-dynamic processes.

Language: Английский

Citations

1
Metal-bound carbon and nutrients across hydrologically diverse boreal peatlands DOI Creative Commons
Holly J. Curtinrich, Stephen D. Sebestyen, Steven J. Hall

et al.

Biogeochemistry, Journal Year: 2024, Volume and Issue: 168(1)

Published: Dec. 28, 2024

Language: Английский

Citations

1
Hydrothermal pretreatment renders peat susceptible to enzymatic saccharification DOI Creative Commons
J. Thomsen, Signe Lett, Helle Juel Martens

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 6, 2024

Abstract Sphagnum peat bogs store a large fraction of biologically-bound carbon, due to steady accumulation plant material over millennia. The resistance biomass decay is poorly understood but high importance for preservation efforts and climate models. It shown that cellulose other glucose-rich polysaccharides are readily degradable by commercial enzyme cocktail designed the industrial saccharification lignocellulose vascular plants. However, prior hydrothermal pretreatment was required enzymes gain access polysaccharides. itself released monosaccharides glucose-containing soluble oligosaccharides. monosaccharide profile from consistent with expected hemicellulose content clearly different seen pretreated tissue plants, such as wheat straw. Cellulose retained in insoluble part cleaved at similar or higher rate compared tissues. Confocal laser scanning microscopy showed disrupted cells relocated lignin-like compounds. Peat contains concentration iron, which likely explains pronounced acidification observed slurry ambient conditions during assays. abiotic oxidative reactions also inactivate enzymes. Adding catalase alleviated inactivation essentially stopped saccharification. This study confirms considering those take place drained material.

Language: Английский

Citations

0
Bacterially mediated carbon-iron coupling drives differential effects of herbicide enantiomers on soil heavy metal bioavailability DOI
Ran Wu, Hua Wang,

Hanche Xia

et al.

Soil Biology and Biochemistry, Journal Year: 2024, Volume and Issue: unknown, P. 109674 - 109674

Published: Dec. 1, 2024

Language: Английский

Citations

0
Prolonged Storage of Bound Organic Carbon in Wetland but Not Upland Soils: A 13C and 14C Perspective DOI Creative Commons
Tian Ma,

Yiyun Wang,

Guohua Dai

et al.

Geophysical Research Letters, Journal Year: 2024, Volume and Issue: 52(1)

Published: Dec. 28, 2024

Abstract Protection by metal (hydr) oxides is one of the key mechanisms for long‐term stabilization soil organic carbon (SOC). However, source and turnover (metal‐) bound (OC) in soils are poorly constrained. Here we present first large‐scale study on 13 C 14 characteristics OC 15 wetland upland profiles. We find that has similar δ as SOC, suggesting no preference plant‐ or microbe‐derived carbon. Δ more negative than SOC but not mineral soils, decreases with increasing reactive minerals. Hence, contrast to conventional assumption, better preserved relative wetlands high contents metals. Our finding highlights dynamic exchange calls a recognition metals stabilizing wetlands.

Language: Английский

Citations

0