Effect of Nitrogen Fertilizer on Soil CO2 Emission Depends on Crop Rotation Strategy

De-jie, Kong; Liu, Nana; Ren, Chao; Li, Huiying; Wang, Weiyu; Li, Na; Ren, Guangxin; Feng, Yongzhong; Yang, Gaihe

doi:10.3390/su12135271

Cited by 5 publications

(2 citation statements)

References 51 publications

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“…Specifically, every kilogram of nitrogen fixed in fertilizer production produces 1.8 kg of CO2. It is presumed that any CO2 generated by burning crop residues will be absorbed by the subsequent crop" [25].…”

Section: Carbon Dioxidementioning

confidence: 99%

Conservation Agriculture as a Climate Change Mitigation Strategy: A Review

Mandloi,

Bangre,

Aher

et al. 2023

IJECC

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To enhance our comprehension of agriculture's role in addressing climate change, accurate assessment of its capacity for carbon sequestration is crucial. This assessment encompasses multiple considerations, including regional climate patterns, crop choices, soil management practices, and soil types. Climate change poses a significant threat to food and nutritional security on local, national, and global scales. The amplified concentrations of greenhouse gases, such as carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O), present immediate challenges. Vulnerable populations, especially those in impoverished conditions, face heightened risk of food insecurity due to the impacts of climate change. Additionally, the conversion of non-agricultural land, like forests, into agricultural use, and human-generated emissions of greenhouse gases from agricultural activities significantly contribute to climate change. The escalating concentration of greenhouse gases, particularly CO2, in the atmosphere leads to global warming. Over the last century (1906–2005), the global mean surface temperature has risen by approximately 0.60 to 0.90°C, with the most rapid increase occurring in recent decades. The global average temperature continues to steadily climb and is projected to rise by 2°C by 2100, potentially resulting in significant global economic losses. The increasing concentration of CO2, a major greenhouse gas, is a cause for concern. This rise has fostered enhanced plant growth and productivity due to increased photosynthesis. However, the benefits of heightened photosynthesis are offset by higher temperatures, leading to increased crop respiration rates, greater evapotranspiration, heightened pest infestations, shifts in weed species, and reduced crop durations. This paper reviews the literature on climate change, its potential drivers, its effects on agriculture, and its influence on the physiological and metabolic processes of plants. It also explores potential and reported implications for plant growth, productivity, and mitigation strategies. In recent years, there has been a growing recommendation for the adoption of conservation agriculture as a more sustainable alternative to conventional farming practices. Conservation agriculture not only supports soil health but also enhances agricultural productivity, making it a crucial tool for mitigating the impacts of climate change.

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Section: Carbon Dioxidementioning

confidence: 99%

Conservation Agriculture as a Climate Change Mitigation Strategy: A Review

Mandloi,

Bangre,

Aher

et al. 2023

IJECC

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“…By performing crop rotation with soybean, more significant net nitrogen mineralization and increases in residual soil nitrogen content were achieved [16]. Lower soil CO 2 emissions and higher water use efficiency in soybean fields than in maize are particularly beneficial in the dryland cropping systems of northern China [17]. Thus, the effects of straw retention on soil carbon and nitrogen dynamics during long-term wheat-soybean rotation should be comprehensively elucidated.…”

Section: Introductionmentioning

confidence: 99%

Long-Term Wheat-Soybean Rotation and the Effect of Straw Retention on the Soil Nutrition Content and Bacterial Community

et al. 2022

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Straw retention and wheat-soybean rotation play critical role in maintaining soil quality. However, the correlation between bacterial diversity and community structure, and soil nutrients is unknown, and a systematic understanding of their responses to straw retention is lacking. In the field experiment, the straw retention treatments included no straw (NS), half straw (HS), and total straw (TS) retention during long-term wheat-soybean rotation. The mean contents of soil total nitrogen (TN), nitrate-N (NO3−-N), and microbial biomass nitrogen (MBN) increased by 15.06%, 21.10%, and 38.23%, respectively, with straw retention relative to NS, while that of ammonium-N (NH4+-N) reduced by 3.68%. The concentration of carbon components increased as straw retention increased. The levels of soil dissolved organic carbon (DOC), microbial biomass carbon (MBC), and soil organic carbon (SOC) increased by 4.34%, 7.63%, and 9.34%, respectively, with straw retention relative to NS. Soil bacterial alpha diversity was reduced with straw retention. Soil pH and nutrient content were identified as the main factors affecting the soil microbial diversity and structure at the phylum level. Accordingly, straw retention and soybean-wheat rotation enable sustainable agriculture in the dryland of northern China.

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