Generally Reduced Sink Capacity of Upland Soils for Atmospheric Methane Over the Past Three Decades (1993–2022) DOI
Zhaoxin Li,

Yanmeng Shang,

Chao Wang

et al.

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(5)

Published: May 1, 2025

ABSTRACT Upland soils act as the second largest and only manageable sink of atmospheric methane (CH 4 ). Quantifying spatiotemporal patterns net CH exchange between upland atmosphere is critical for refining global budget estimates developing climate mitigation strategies. However, in remains highly uncertain due to incomplete understanding shifts source or role under change. In this study, we generated high‐resolution maps fluxes from by integrating field flux measurement data spanning over period 1993–2022 using machine learning models. Collectively, exhibited a generally reduced capacity past three decades. Cropping uplands presented shift weak source, grassland changed strong . The forest sharply decreased 68.8% decades, while tundra acted consistent , with decrease 55.3% since 1993. combined effects changes precipitation temperature can explain more than 70% variations soils. Our findings provide new perspective on soils, which update budget, particularly potential sink.

Language: Английский

Generally Reduced Sink Capacity of Upland Soils for Atmospheric Methane Over the Past Three Decades (1993–2022) DOI
Zhaoxin Li,

Yanmeng Shang,

Chao Wang

et al.

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(5)

Published: May 1, 2025

ABSTRACT Upland soils act as the second largest and only manageable sink of atmospheric methane (CH 4 ). Quantifying spatiotemporal patterns net CH exchange between upland atmosphere is critical for refining global budget estimates developing climate mitigation strategies. However, in remains highly uncertain due to incomplete understanding shifts source or role under change. In this study, we generated high‐resolution maps fluxes from by integrating field flux measurement data spanning over period 1993–2022 using machine learning models. Collectively, exhibited a generally reduced capacity past three decades. Cropping uplands presented shift weak source, grassland changed strong . The forest sharply decreased 68.8% decades, while tundra acted consistent , with decrease 55.3% since 1993. combined effects changes precipitation temperature can explain more than 70% variations soils. Our findings provide new perspective on soils, which update budget, particularly potential sink.

Language: Английский

Citations

0