Influences of elevational gradient on flower size and number of Gentiana lawrencei var. farreri DOI Creative Commons
Mengyan Wang,

Zuoyi Wang,

Yang Yuan

et al.

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(5)

Published: May 1, 2024

Abstract Plants can adapt to environmental changes by adjusting their functional traits and biomass allocation. The size number of flowers are related plant reproduction. Life history theory predicts that there is a trade‐off between flower number, the potentially explain adaptability plants. Elevation gradients in mountains provide unique opportunity test how plants will respond climate change. In this study, we tried better alpine Gentiana lawrencei var. farreri response We measured individual size, reproductive allocation G. during flowering period along an elevation gradient from 3200 4000 m, explored relationships using linear mixed‐effect models structural equation model. found with increasing, decreased increased, while remained unchanged. Individual positively affected but was not size; number; clear number. also indirectly via directly reducing size. sum, study suggests environments synergies or trade‐offs among allocation, This increases our understanding adaptation mechanisms change environments.

Language: Английский

Global turnover of soil mineral-associated and particulate organic carbon DOI Creative Commons
Zhenghu Zhou, Chengjie Ren, Chuankuan Wang

et al.

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

Published: June 22, 2024

Abstract Soil organic carbon (SOC) persistence is predominantly governed by mineral protection, consequently, soil mineral-associated (MAOC) and particulate (POC) turnovers have different impacts on the vulnerability of SOC to climate change. Here, we generate global MAOC POC maps using 8341 observations then infer turnover times a data-model integration approach. Global storages are $${975}_{964}^{987}$$ 975 964 987 Pg C (mean with 5% 95% quantiles) $${330}_{323}^{337}$$ 330 323 337 C, while mean $${129}_{45}^{383}$$ 129 45 383 yr $${23}_{5}^{82}$$ 23 5 82 in top meter, respectively. Climate warming-induced acceleration decomposition greater subsoil than that topsoil. Overall, atlas turnover, together distributions stocks, provide benchmark for Earth system models diagnose SOC-climate change feedback.

Language: Английский

Citations

25
Emerging multiscale insights on microbial carbon use efficiency in the land carbon cycle DOI Creative Commons
Xianjin He, Elsa Abs, Steven Allison

et al.

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

Published: Sept. 13, 2024

Microbial carbon use efficiency (CUE) affects the fate and storage of in terrestrial ecosystems, but its global importance remains uncertain. Accurately modeling predicting CUE on a scale is challenging due to inconsistencies measurement techniques complex interactions climatic, edaphic, biological factors across scales. The link between microbial soil organic relies stabilization necromass within aggregates or association with minerals, necessitating an integration processes approaches. In this perspective, we propose comprehensive framework that integrates diverse data sources, ranging from genomic information traditional assessments, refine cycle models by incorporating variations CUE, thereby enhancing our understanding contribution cycling.

Language: Английский

Citations

17
Unlocking Mechanisms for Soil Organic Matter Accumulation: Carbon Use Efficiency and Microbial Necromass as the Keys DOI
Yang Yang, Anna Gunina, Cheng Huan

et al.

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(1)

Published: Jan. 1, 2025

Soil microorganisms transform plant-derived C (carbon) into particulate organic (POC) and mineral-associated (MAOC) pools. While microbial carbon use efficiency (CUE) is widely recognized in current biogeochemical models as a key predictor of soil (SOC) storage, large-scale empirical evidence limited. In this study, we proposed experimentally tested two predictors POC MAOC pool formation: necromass (using amino sugars proxy) CUE (by 18O-H2O approach). sampling (0-10 10-20 cm depth) was conducted along climatic transect 900 km on the Loess Plateau, including cropland, grassland, shrubland, forest ecosystems, to ensure homogeneous parent material. We found highest accumulation occurred zones MAT between 5°C 10°C or MAP 300 500 mm. Microbial more positively related than (p < 0.05), suggesting that residues may improve strongly compared pool. Random linear regression analyses showed increased with fungal C, whereas bacterial drove MAOC. coupled 0.05) but decoupled SOC > 0.05). The have faster turnover rate due lack clay protection, which lead rapid thus their decoupling from CUE. sense, driven by necromass, explains dynamics. Our findings highlight insufficiency relying solely predict bulk storage. Instead, propose should be used together explain dynamics, each influencing distinct

Language: Английский

Citations

4
Short-term warming supports mineral-associated carbon accrual in abandoned croplands DOI Creative Commons
Zhenrui Zhang, Hui Gao, Xiaoxia Gao

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 2, 2025

Effective soil organic carbon (SOC) management can mitigate the impact of climate warming. However, response different SOC fractions to warming in abandoned croplands remains unclear. Here, categorizing into particulate and mineral-associated (POC MAOC) with physical fractionation, we investigate responses POC MAOC content temperature sensitivity (Q10) through a 3-year situ experiment (+1.6 °C) across 12 sites China (latitude: 22.33–46.58°N). Our results indicate that unchanged while significantly increases under changes are mainly influenced by root biomass microbial necromass changes, respectively. The Q10 is lower than regardless or control treatment, suggesting represents most persistent least vulnerable fraction within SOC. Collectively, sequestration stable be enhanced short-term Natural recovery generally benefits accrual croplands, but on this ecosystem authors showed enhances these lands.

Language: Английский

Citations

1
Context dependencies in the responses of plant biomass and surface soil organic carbon content to nitrogen addition and precipitation change within alpine grasslands DOI
Fawei Zhang,

Hongqin Li,

Jingbin Zhu

et al.

Agriculture Ecosystems & Environment, Journal Year: 2025, Volume and Issue: 381, P. 109475 - 109475

Published: Jan. 10, 2025

Language: Английский

Citations

1
Environment and microbiome drive different microbial traits and functions in the macroscale soil organic carbon cycle DOI Creative Commons
Daniel Wasner,

Joerg Schnecker,

Xingguo Han

et al.

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(8)

Published: Aug. 1, 2024

Soil microbial traits and functions play a central role in soil organic carbon (SOC) dynamics. However, at the macroscale (regional to global) it is still unresolved whether (i) specific environmental attributes (e.g., climate, geology, types) or (ii) community composition drive key directly. To address this knowledge gap, we used 33 grassland topsoils (0-10 cm) from geoclimatic gradient Chile. First, incubated soils for 1 week favorable standardized conditions quantified wide range of such as biomass (MBC), enzyme kinetics, respiration, growth rates well use efficiency (CUE). Second, characterized climatic physicochemical properties bacterial fungal soils. We then applied regression analysis investigate how strongly measured were linked with setting versus composition. show that (predominantly amount matter) determined patterns MBC along gradient, which turn explained respiration rates. normalized (i.e., growth) more than attributes. Notably, both followed distinct trends related different parts community, resulted strong effects on CUE. conclude even macroscale, CUE result physiologically decoupled aspects metabolism, partially by The affect functions, therefore factors need be considered context SOC

Language: Английский

Citations

5
Tree planting is no climate solution at northern high latitudes DOI
J. A. Kristensen, Laura Barbero-Palacios, Isabel C. Barrio

et al.

Nature Geoscience, Journal Year: 2024, Volume and Issue: 17(11), P. 1087 - 1092

Published: Nov. 1, 2024

Language: Английский

Citations

5
Linkage between temperature sensitivity of SOM decomposition and microbial communities depends on soil fractions DOI
Shuqi Qin, Kai Fang, Yutong Song

et al.

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(8)

Published: Aug. 1, 2024

The magnitude of terrestrial carbon (C)-climate feedback largely depends on the temperature sensitivity soil organic matter (SOM) decomposition (Q

Language: Английский

Citations

4
Precipitation Determines the Spatial Variability of Vegetation and Topsoil Organic Carbon Densities of Alpine Grasslands in the Qinghai-Tibetan Plateau, China DOI
Fawei Zhang,

Hongqin Li,

Jingbin Zhu

et al.

Ecosystems, Journal Year: 2025, Volume and Issue: 28(1)

Published: Jan. 9, 2025

Language: Английский

Citations

0
Spatial Patterns and Controlling Factors of Soil Organic Carbon and Total Nitrogen in the Three River Headwaters Region, China DOI

Qiao Cui,

Zongxing Li,

Qi Feng

et al.

Chinese Geographical Science, Journal Year: 2025, Volume and Issue: 35(1), P. 131 - 148

Published: Jan. 14, 2025

Language: Английский

Citations

0