The controlling factors and coupling of soil CO2、CH4and N2O fluxes in the temperate needle-broadleaved mixed forest

Xusheng, 党旭升 Dang; Shulan, 程淑兰 Cheng; Huajun, 方华军 Fang; Guirui, 于贵瑞 Yu; Shijie, 韩士杰 Han; Junhui, 张军辉 Zhang; Miao, 王淼 Wang; Yongsheng, 王永生 Wang; Minjie, 徐敏杰 Xu; Linsen, 李林森 Li; Lei, 王磊 Wang

doi:10.5846/stxb201403220513

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“…4). N 2 O is generated by denitrification and nitrification and the anaerobic conditions of denitrification aid the activity of CH 4 oxidizing bacteria, thereby resulting in the increases of the CH 4 fluxes (Dang et al, 2015).…”

Section: Effect Of Herbicides On Methane Fluxes In the Soil Of Alfalfmentioning

confidence: 99%

Herbicide applications increase greenhouse gas emissions of alfalfa pasture in the inland arid region of northwest China

Shi¹,

Guo²,

Ning³

et al. 2020

PeerJ

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Herbicides are used to control weeds in agricultural crops such as alfalfa (Medicago sativa L.), which is a forage crop. It is unclear what, if any, effect herbicides have on greenhouse gas (GHG) emissions when used on alfalfa. Our study was conducted in 2017 and 2018 to investigate the effects of two herbicides (Quizalofop-p-ethyl, QE and Bentazone, BT) on methane (CH4), carbon dioxide (CO2) and nitrous oxide (N2O) emissions from soil planted with alfalfa. QE is used to control grasses and BT is used for broadleaf weed control. Soil CO2 emissions and soil uptake of CH4 increased significantly in both years following the QE and BT treatments, although CO2 emissions differed significantly between the trial years. N2O emissions decreased relative to the control and showed no significant differences between the trial years. The application of QE and BT on alfalfa resulted in a significant increase in CO2 emissions which contributed to a significant increase in GHG emissions. The application of QE influenced GHG emissions more than BT. We demonstrated the potential effect that herbicide applications have on GHG fluxes, which are important when considering the effect of agricultural practices on GHG emissions and the potential for global warming over the next 100 years.

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Section: Effect Of Herbicides On Methane Fluxes In the Soil Of Alfalfmentioning

confidence: 99%

Herbicide applications increase greenhouse gas emissions of alfalfa pasture in the inland arid region of northwest China

Shi¹,

Guo²,

Ning³

et al. 2020

PeerJ

View full text Add to dashboard Cite

show abstract

The controlling factors and coupling of soil CO₂、CH₄and N₂O fluxes in the temperate needle-broadleaved mixed forest

Cited by 1 publication

References 0 publications

Herbicide applications increase greenhouse gas emissions of alfalfa pasture in the inland arid region of northwest China

Herbicide applications increase greenhouse gas emissions of alfalfa pasture in the inland arid region of northwest China

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