TY - JOUR
T1 - Dynamics of greenhouse gas fluxes and soil physico-chemical properties in agricultural and forest soils
AU - Rubaiyat, Ashik
AU - Hossain, Md Lokman
AU - Kabir, Md Humayain
AU - Sarker, Md Monzer Hossain
AU - Salam, Mir Md Abdus
AU - Li, Jianfeng
N1 - This work was supported by research grants from the Guangdong-Hong Kong Joint Laboratory for Water Security [project number 2020B1212030005] and the Research Grants Council of the Hong Kong Special Administrative Region, China [project number HKBU12301220].
Publisher Copyright:
© 2023 The Authors.
PY - 2023/10/1
Y1 - 2023/10/1
N2 - Examination of greenhouse gas (GHG) fluxes (CO2, CH4, and N2 O) in soils is crucial for developing effective strategies to mitigate climate change. In this study, we investigated the GHG fluxes in agricultural and forest soils to explore the changes in soil GHG fluxes, and assess the relationships of GHGs with other physico-chemical properties. Results show that forest soils have a higher CO2 flux, while agricultural soils have a higher N2 O flux due to fertilizer application and heterotrophic nitrification. Forest soils act as a CH4 sink, which are connected with increased porosity and decreased bulk density. In agricultural soils, CO2 and N2O were strongly linked with NHþ4, soil temperature, pH, soil organic carbon, total nitrogen, plant-available phosphorous, and microbial biomass nitrogen (mbN) but were negatively connected with bulk density and microbial biomass carbon (mbC). In contrast to CO2 and N2O, CH4 in agricultural soils exhibited inverse relationships with all physico-chemical properties. In forest soils, CO2 and CH4 were positively correlated with soil temperature and mbC, and mbN and N2O were negatively correlated with bulk density and pH. This study highlights the critical need to comprehend the complex relationship between soil physico-chemical properties and GHG fluxes for effective climate change mitigation.
AB - Examination of greenhouse gas (GHG) fluxes (CO2, CH4, and N2 O) in soils is crucial for developing effective strategies to mitigate climate change. In this study, we investigated the GHG fluxes in agricultural and forest soils to explore the changes in soil GHG fluxes, and assess the relationships of GHGs with other physico-chemical properties. Results show that forest soils have a higher CO2 flux, while agricultural soils have a higher N2 O flux due to fertilizer application and heterotrophic nitrification. Forest soils act as a CH4 sink, which are connected with increased porosity and decreased bulk density. In agricultural soils, CO2 and N2O were strongly linked with NHþ4, soil temperature, pH, soil organic carbon, total nitrogen, plant-available phosphorous, and microbial biomass nitrogen (mbN) but were negatively connected with bulk density and microbial biomass carbon (mbC). In contrast to CO2 and N2O, CH4 in agricultural soils exhibited inverse relationships with all physico-chemical properties. In forest soils, CO2 and CH4 were positively correlated with soil temperature and mbC, and mbN and N2O were negatively correlated with bulk density and pH. This study highlights the critical need to comprehend the complex relationship between soil physico-chemical properties and GHG fluxes for effective climate change mitigation.
KW - agriculture
KW - forests
KW - greenhouse gas fluxes
KW - land use
KW - physico-chemical properties
KW - soil organic carbon
UR - http://www.scopus.com/inward/record.url?scp=85175525477&partnerID=8YFLogxK
U2 - 10.2166/wcc.2023.338
DO - 10.2166/wcc.2023.338
M3 - Journal article
AN - SCOPUS:85175525477
SN - 2040-2244
VL - 14
SP - 3791
EP - 3809
JO - Journal of Water and Climate Change
JF - Journal of Water and Climate Change
IS - 10
ER -