Dynamics of Soil N2O and CO2 Emissions in Response to Freeze–Thaw Intensity and Moisture Variations: A Laboratory Experiment DOI Open Access
Yuhua Kong, Shanshan Gong, Liping Zhu

et al.

Forests, Journal Year: 2025, Volume and Issue: 16(3), P. 380 - 380

Published: Feb. 20, 2025

Climate warming has led to more frequent soil freeze–thaw (FT) events in high-latitude and high-altitude regions, leading significant pulse releases of greenhouse gasses (GHGs) such as nitrous oxide (N2O) carbon dioxide (CO2) into the atmosphere. These emissions exhibit unpredictable spatiotemporal variability, which are influenced by type, moisture FT temperature. This study employed controlled laboratory experiments investigate effects varying intensities (−10 °C/10 °C, −5 °C/5 a control at 0 °C/0 °C) levels (30%, 60%, 90% water-filled pore space, WFPS) on dynamics N2O CO2 (measured daily), availability nitrogen, microbial biomass, enzyme activities weekly) soils collected from two forest stands Changbai mountains northeast China, broadleaf Korean pine (Pinus koraiensis Sieb. et Zucc.) mixed (BKPF) an adjacent secondary white birch (Betula platyphylla Suk.) (WBF), where frequently occur. Our findings reveal that high intensity significantly increased BKPF WBF soils. With increasing moisture, peaked 60% WFPS, while were highest WFPS. Notably, particularly intense under (i.e., soils, persisting for nearly 8 days during cycles. The conditions intricately regulated substrate dynamics, including dissolved organic carbon, nitrogen mineralization, nitrate concentrations. results improve understanding variability GHG process its underlying mechanisms, inadequately considered current ecological land surface models. Consequently, it would contribute valuable insights interaction between climate change zones.

Language: Английский

Spatiotemporal variability and dominant driving factors of satellite observed global soil moisture from 2001 to 2020 DOI

Yu-Xuan Li,

Pei Leng, Abba Aliyu Kasim

et al.

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 132848 - 132848

Published: Feb. 1, 2025

Language: Английский

Citations

1
Dynamics of Soil N2O and CO2 Emissions in Response to Freeze–Thaw Intensity and Moisture Variations: A Laboratory Experiment DOI Open Access
Yuhua Kong, Shanshan Gong, Liping Zhu

et al.

Forests, Journal Year: 2025, Volume and Issue: 16(3), P. 380 - 380

Published: Feb. 20, 2025

Climate warming has led to more frequent soil freeze–thaw (FT) events in high-latitude and high-altitude regions, leading significant pulse releases of greenhouse gasses (GHGs) such as nitrous oxide (N2O) carbon dioxide (CO2) into the atmosphere. These emissions exhibit unpredictable spatiotemporal variability, which are influenced by type, moisture FT temperature. This study employed controlled laboratory experiments investigate effects varying intensities (−10 °C/10 °C, −5 °C/5 a control at 0 °C/0 °C) levels (30%, 60%, 90% water-filled pore space, WFPS) on dynamics N2O CO2 (measured daily), availability nitrogen, microbial biomass, enzyme activities weekly) soils collected from two forest stands Changbai mountains northeast China, broadleaf Korean pine (Pinus koraiensis Sieb. et Zucc.) mixed (BKPF) an adjacent secondary white birch (Betula platyphylla Suk.) (WBF), where frequently occur. Our findings reveal that high intensity significantly increased BKPF WBF soils. With increasing moisture, peaked 60% WFPS, while were highest WFPS. Notably, particularly intense under (i.e., soils, persisting for nearly 8 days during cycles. The conditions intricately regulated substrate dynamics, including dissolved organic carbon, nitrogen mineralization, nitrate concentrations. results improve understanding variability GHG process its underlying mechanisms, inadequately considered current ecological land surface models. Consequently, it would contribute valuable insights interaction between climate change zones.

Language: Английский

Citations

0