Land use intensification significantly reduced CH4 emissions while increasing N2O emissions: Taihu Lake region, China

Shen, Weishou; Qian, Dong; Xiong, Ruonan; Qiu, Zijian; Rajasekar, Adharsh

doi:10.1016/j.agee.2022.108189

Cited by 10 publications

(2 citation statements)

References 56 publications

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“…Water is a necessary resource for crop growth and an important factor affecting crop yield. Research has pointed out that fallow crop rotation can promote the water storage capacity of soil, ensure the water level of groundwater resources, and thus promote the efficiency of water resources [33]. As the growth carrier of crops, land resources have always been the focus of scholars.…”

Section: Policy Background and Literature Reviewmentioning

confidence: 99%

Can a Crop Rotation and Fallow System Reduce the Carbon Emission Intensity of Agriculture?

Zhang,

Sun,

Xia

et al. 2024

Land

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Under the carbon emission pattern of “peak carbon and carbon neutrality”, the policy of crop rotation and fallow system (CRFS) is regarded as an important initiative to promote the green, low-carbon, and high-quality development of agriculture. Focusing on balanced panel data from 30 provinces in China from 2010 to 2021, this paper empirically examines the impact of CRFS on agricultural carbon emissions (ACEI) and its internal mechanism using a multi-temporal difference-in-differences model. The benchmark regression results show that CRFS can significantly reduce ACEI, and the results remain robust after validation by multiple methods. Mechanism results show that CRFS is able to reduce ACEI by reducing factor mismatch and promoting the level of agricultural services. Heterogeneity analysis results show that the arable land fallow rotation system is more conducive to promoting the reduction in agricultural carbon emission intensity in the main grain producing areas, main grain marketing areas, high land transfer areas, and plantation areas than in the grain production and marketing balanced areas, low land transfer, and animal husbandry areas. This study demonstrates the effectiveness of the CRFS policy implementation, provides a doctrinal basis for expanding the scope of CRFS implementation, and provides policy recommendations for relevant departments to improve the CRFS policy.

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Section: Policy Background and Literature Reviewmentioning

confidence: 99%

Can a Crop Rotation and Fallow System Reduce the Carbon Emission Intensity of Agriculture?

Zhang,

Sun,

Xia

et al. 2024

Land

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show abstract

“…Agricultural drainage ditches are an important part of terrestrial freshwater systems and agricultural ecosystems, serving as the main conduit for non-point source pollution discharge, and their greenhouse gas emissions cannot be ignored [4,5]. Agricultural drainage ditches are akin to linear wetlands, and research into their pollution load and greenhouse gas emission patterns is still insufficient [6][7][8][9]. Current research often focuses on the processes of greenhouse gas emissions and the physicochemical properties of water bodies in wetlands and rivers [10,11].…”

Section: Introductionmentioning

confidence: 99%

Effects of Nitrogen Input and Aeration on Greenhouse Gas Emissions and Pollutants in Agricultural Drainage Ditches

Zhang,

Wu,

Guo

et al. 2024

Agronomy

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Understanding the patterns of greenhouse gas emissions and the changes in pollution load in terrestrial freshwater systems is crucial for accurately assessing the global carbon cycle and overall greenhouse gas emissions. However, current research often focuses on wetlands and rivers, with few studies on agricultural drainage ditches, which are an important part of the agricultural ecosystem. Investigating the greenhouse gas emission patterns and pollution load changes in agricultural drainage ditches can help accurately assess the greenhouse effect of agricultural systems and improve fertilization measures in farmlands. This study explored the effects of nitrogen input and aeration on the pollution load and greenhouse gas emission processes in paddy field drainage ditches. The results showed that aeration significantly reduced the concentration of ammonium nitrogen (NH4+) in the water, decreased the emissions of nitrous oxide (N2O) and methane (CH4), and slightly increased the emission of carbon dioxide (CO2), resulting in an overall reduction of the global warming potential (GWP) by 34.02%. Nitrogen input significantly increased the concentration of ammonium nitrogen in the water, slightly reduced the emissions of N2O and CH4, and increased the CO2 emissions by 46.60%, thereby increasing the GWP by 15.24%. The drainage ditches reduced the pollution load in both the water and sediment, with the overall GWP downstream being 9.34% lower than upstream.

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Biofertilizer supplements allow nitrogen fertilizer reduction, maintain yields, and reduce nitrogen losses to air and water in China paddy fields

Hu,

Xue,

Wade

et al. 2024

Agriculture, Ecosystems & Environment

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Land use intensification significantly reduced CH4 emissions while increasing N2O emissions: Taihu Lake region, China

Cited by 10 publications

References 56 publications

Can a Crop Rotation and Fallow System Reduce the Carbon Emission Intensity of Agriculture?

Can a Crop Rotation and Fallow System Reduce the Carbon Emission Intensity of Agriculture?

Effects of Nitrogen Input and Aeration on Greenhouse Gas Emissions and Pollutants in Agricultural Drainage Ditches

Biofertilizer supplements allow nitrogen fertilizer reduction, maintain yields, and reduce nitrogen losses to air and water in China paddy fields

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