Carbon versus nitrogen release from root and leaf litter is modulated by litter position and plant functional type DOI Open Access
Enkhmaa Erdenebileg, Congwen Wang, Wanying Yu

et al.

Journal of Ecology, Journal Year: 2022, Volume and Issue: 111(1), P. 198 - 213

Published: Oct. 28, 2022

Abstract Litters of leaves and roots different qualities occur naturally above‐ below‐ground, respectively, where they decompose in contrasting abiotic biotic environments. Therefore, ecosystem carbon (C) nitrogen (N) dynamics can be strongly affected by the combination litter position quality. However, it is poorly understood how C versus N turnover litters depend on interplay among plant functional type (PFT), organs, traits position. In a semi‐arid inland dune, soil surface buried leaf fine 25 species across three PFTs (herbs, legume shrubs nonlegume shrubs) were incubated for 3, 6, 9, 12, 18 24 months to investigate decomposition dynamics. Morphological chemical (nutrient NMR carbon) initial determined. The rates ( k values) did not differ, but decomposed faster than litter. Ratios values decreased with C:N ratio. Herbs roots, leaves. At given loss, had higher loss litters; relatively or lower ratio shrubs. Stronger positive relationships between losses shown respectively. Synthesis. generality release at highlights importance legumes cycling ecosystems limiting factor. coordination as function quality are modulated PFT. These findings have important implications development process‐based models cycles context on‐going global change potentially altering composition communities relative quantities above‐ground below‐ground

Language: Английский

Nitrogen addition stimulates litter decomposition rate: From the perspective of the combined effect of soil environment and litter quality DOI
Junjun Wu, Hong Zhang, Xiaoli Cheng

et al.

Soil Biology and Biochemistry, Journal Year: 2023, Volume and Issue: 179, P. 108992 - 108992

Published: Feb. 22, 2023

Language: Английский

Citations

36
Nitrogen addition increased soil particulate organic carbon via plant carbon input whereas reduced mineral−associated organic carbon through attenuating mineral protection in agroecosystem DOI
Tao Sun,

Xiali Mao,

Kefeng Han

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 899, P. 165705 - 165705

Published: July 22, 2023

Language: Английский

Citations

25
Ecosystem type and resource quality are more important than global change drivers in regulating early stages of litter decomposition DOI
Raúl Ochoa‐Hueso, Manuel Delgado‐Baquerizo, Paul Tuan An King

et al.

Soil Biology and Biochemistry, Journal Year: 2018, Volume and Issue: 129, P. 144 - 152

Published: Nov. 12, 2018

Language: Английский

Citations

70
Manganese effects on plant residue decomposition and carbon distribution in soil fractions depend on soil nitrogen availability DOI Creative Commons
Avishesh Neupane, Elizabeth Herndon, Thea Whitman

et al.

Soil Biology and Biochemistry, Journal Year: 2023, Volume and Issue: 178, P. 108964 - 108964

Published: Jan. 23, 2023

Language: Английский

Citations

20
Anthropogenic N deposition alters soil organic matter biochemistry and microbial communities on decaying fine roots DOI
William A. Argiroff, Donald R. Zak, Rima A. Upchurch

et al.

Global Change Biology, Journal Year: 2019, Volume and Issue: 25(12), P. 4369 - 4382

Published: July 17, 2019

Fine root litter is a primary source of soil organic matter (SOM), which globally important pool C that responsive to climate change. We previously established ~20 years experimental nitrogen (N) deposition has slowed fine decay and increased the storage carbon (C; +18%) across widespread northern hardwood forest ecosystem. However, microbial mechanisms have directly are unknown. Here, we show N decreased relative abundance Agaricales fungi (-31%) partially ligninolytic Actinobacteria (+24%) on decaying roots. Moreover, lignin-derived compounds residing in SOM (+53%), this biochemical response significantly related shifts both fungal bacterial community composition. Specifically, accumulation negatively Mycena Kuehneromyces fungi, positively Microbacteriaceae. Our findings suggest by altering composition communities roots such their capacity for lignin degradation reduced, decay, contribution from SOM. The responses observed may explain anthropogenic increases terrestrial ecosystems. More broadly, our link function communities, implicate compositional mediating biogeochemical processes global significance.

Language: Английский

Citations

54
Influences of nitrogen addition and aboveground litter-input manipulations on soil respiration and biochemical properties in a subtropical forest DOI
Yong Peng,

Si-yi Song,

Zengyan Li

et al.

Soil Biology and Biochemistry, Journal Year: 2019, Volume and Issue: 142, P. 107694 - 107694

Published: Dec. 10, 2019

Language: Английский

Citations

53
The importance of macro- and micro-nutrients over climate for leaf litter decomposition and nutrient release in Patagonian temperate forests DOI
Lucía Vivanco, Amy T. Austin

Forest Ecology and Management, Journal Year: 2019, Volume and Issue: 441, P. 144 - 154

Published: March 27, 2019

Language: Английский

Citations

50
Long‐term Nitrogen Addition Decreases Organic Matter Decomposition and Increases Forest Soil Carbon DOI
Richard D. Bowden,

S. Wurzbacher,

Susan Washko

et al.

Soil Science Society of America Journal, Journal Year: 2019, Volume and Issue: 83(S1)

Published: May 30, 2019

Core Ideas N additions alter soil microbial community composition and reduce forest biomass enzyme activity. Litter decomposition organic matter degradation was slowed by additions. Reduced increases C, but long‐term effects on productivity are unknown. Eastern North American forests receive anthropogenically elevated nitrogen (N) deposition that alters processes productivity. We examined carbon (C) in temperate, N‐rich plots fertilized annually (100 kg ha −1 y ) since 1993. After nearly two decades, C O, A, upper 50 cm of B horizons N‐addition 17% greater (14.2 ± 0.7 m −2 than control plots. Aboveground tree growth litterfall were not affected fertilization. Fine root mass (0–1 mm) 34% plots, did explain increases. Rather, reduced litter drove Decomposition rates black cherry, sugar maple, mixed leaf 43, 67, 36%, greater, respectively, Light fraction due to either enhanced production or decreased matter. Soil respiration reduced, upper‐B lower controls. The also altered dramatically with Recalcitrant activity (peroxidase) the O‐horizon addition. Available Ca, Mg, K O A These results suggest chronic atmospheric inputs can increase storage decreasing decomposition, however stability this additional sequestration is

Language: Английский

Citations

46
Nitrogen increases early‐stage and slows late‐stage decomposition across diverse grasslands DOI Creative Commons
Allison L. Gill, Peter B. Adler, Elizabeth T. Borer

et al.

Journal of Ecology, Journal Year: 2022, Volume and Issue: 110(6), P. 1376 - 1389

Published: March 26, 2022

Abstract To evaluate how increased anthropogenic nutrient inputs alter carbon cycling in grasslands, we conducted a litter decomposition study across 20 temperate grasslands on three continents within the Nutrient Network, globally distributed enrichment experiment We determined effects of addition experimental nitrogen (N), phosphorus (P) and potassium plus micronutrient (K μ ) common tree leaf long‐term (maximum 7 years; exact deployment period varied sites). The use higher order models allowed us to distinguish between nutrients early‐ versus late‐stage decomposition. Across continents, N (but not other nutrients) accelerated early‐stage slowed decomposition, increasing slowly decomposing fraction by 28% overall mean residence time 58%. Synthesis . Using novel, cross‐site experiment, found widespread evidence that enhances early stages above‐ground plant diverse grassland sites but slows These findings were corroborated fitting data multiple have implications for soil organic matter formation. For example, following enrichment, microbial processing substrates could promote production transfer low molecular weight compounds soils potentially enhance stabilization mineral‐associated matter. By contrast, slowing particulate (POM) accumulation. Such hypotheses deserve further testing.

Language: Английский

Citations

23
Exchangeable manganese regulates carbon storage in the humus layer of the boreal forest DOI Creative Commons
Yunyu Zhang, Sarah E. Hobbie, William H. Schlesinger

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(13)

Published: March 19, 2024

The huge carbon stock in humus layers of the boreal forest plays a critical role global cycle. However, there remains uncertainty about factors that regulate below-ground sequestration this region. Notably, based on evidence from two independent but complementary methods, we identified exchangeable manganese is factor regulating accumulation forests across both regional scales and entire latitudinal range. Moreover, novel fertilization experiment, addition reduced soil stocks, only after 4 y additions. Our results highlight an underappreciated mechanism influencing pool forests.

Language: Английский

Citations

6