Characteristics of soil CO2 emission and ecosystem carbon balance in wheat-maize rotation field with 4-year consecutive application of two lignite-derived humic acids

Lv, Dongqing; Liu, Yanli; Wang, Xiaowen; Wang, Xiukang; Feng, Haojie; Guo, Xijie; Li, Chengliang

doi:10.1016/j.chemosphere.2022.136654

Cited by 7 publications

(2 citation statements)

References 38 publications

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“…Impact of Modified HAs on Saline Soil Quality. Based on the conclusions of previous research, 30 the addition of HA in both the leaching experiment and the extraction experiment was set at 2.8% of the soil mass. In the leaching experiment, a hollow PVC pipe measuring 30 cm in height and 4.0 cm in diameter was filled with 195 g of soil.…”

Section: Methodsmentioning

confidence: 99%

Selective Modifier-Assisted Humic Acid Extraction: Implications for Soil Quality Enhancement

Zhang,

Chen,

et al. 2024

Environ. Sci. Technol.

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Efficient use of humic acid (HA) for eco-friendly farming and environmental remediation requires further understanding of how targeted modification of HA affects the chemical structure of HA and thereby its effectiveness in enhancing soil quality. We developed novel selective modifiers (SMs) for extracting HA by codoping sodium and copper elements into the birnessite lattice. The structure of SMs was thoroughly examined, and the HAs extracted using SMs, referred to as SMHs, were subjected to a detailed evaluation of their functional groups, molecular weight, carbon composition, flocculation limits, and effectiveness in saline soil remediation. The results showed that replacing manganese with sodium and copper in SMs alters the valence state and reactive oxygen species. In contrast, SMHs exhibited increased acidic functional groups, a lower molecular weight, and transformed aliphatic carbon. Furthermore, the saline soil was improved through increased salt leaching and an optimized soil aggregate structure by SMHs. This research highlights the importance of targeted modification of HA and demonstrates the potential of these modifiers in improving soil quality for ecofriendly farming and environmental remediation.

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Section: Methodsmentioning

confidence: 99%

Selective Modifier-Assisted Humic Acid Extraction: Implications for Soil Quality Enhancement

Zhang,

Chen,

et al. 2024

Environ. Sci. Technol.

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“…Soil organic carbon has a significant impact on CO 2 concentrations in the atmosphere, and carbon sequestration in agricultural soils has long been recognized as an important method of reducing CO 2 emissions [1]. According to the UN Intergovernmental Panel on Climate Change (IPCC), good science-based agricultural practices can contribute at least 5.50×10 15 t of emission reduction potential (in CO 2 equivalent), with soil carbon sequestration accounting for up to 89% of this potential [2].…”

Section: Introductionmentioning

confidence: 99%

Changes in the Organic Carbon Content of Agricultural Soils in the Middle and Lower Reaches of the Yangtze River in China: Based on Data from Long-Term Localization Experiments

Zhao,

Xu,

Wang

2023

Pol. J. Environ. Stud.

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The literature of long−term fertilization experiment in the Yangtze River Economic Belt from 1993 to 2023 was collected, and the data of farmland soil organic carbon were extracted and integrated. Using the normalization treatment and the analysis method of relative annual variation, the overall change of soil organic carbon content in farmland in the Yangtze River Economic Belt under long-term different fertilization measures was studied, and the change differences of soil organic carbon content under three tillage modes were compared, so as to judge and analyze the influence of the duration of the experiment on soil organic carbon dynamics. The results showed that under long-term different fertilization measures, the organic carbon content of farmland soil in the Yangtze River Economic Belt in China showed an overall upward trend. NP, NPK, O, and NPKO treatments all increased the organic carbon content of agricultural soils, with the NPKO treatment being the largest. The sole application of inorganic nitrogen fertilizer reduced the organic carbon content of the soil. The rates of change in soil organic carbon content were 0.11g•(kg•a) −1 , 0.31 g•(kg•a) −1 , and 0.30 g•(kg•a) −1 for dryland, paddy and water−dry rotation farmland, respectively. There is some variation in the rate of change of soil organic carbon content between soil types. The average rate of change of organic carbon was 0.20 g•(kg•a) −1 for red soils, 0.13 g•(kg•a) −1 for tidal soils and 0.19 g•(kg•a) −1 for rice soils. The trend of NPKO>O>NPK>NPK>NP>N is basically maintained for the rate of change of soil organic carbon content. N treatment showed a reduction in organic carbon content in all soil types. Considering the carbon fixation of farmland soil, the combined application of organic and inorganic fertilizers is a more suitable fertilization method in this area.

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Conservation tillage as an economic and ecological farming option for Summer Maize in the oasis region of Northwest China

Xue,

Zhou,

Ran

et al. 2024

Plant Soil

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Characteristics of soil CO2 emission and ecosystem carbon balance in wheat-maize rotation field with 4-year consecutive application of two lignite-derived humic acids

Cited by 7 publications

References 38 publications

Selective Modifier-Assisted Humic Acid Extraction: Implications for Soil Quality Enhancement

Selective Modifier-Assisted Humic Acid Extraction: Implications for Soil Quality Enhancement

Changes in the Organic Carbon Content of Agricultural Soils in the Middle and Lower Reaches of the Yangtze River in China: Based on Data from Long-Term Localization Experiments

Conservation tillage as an economic and ecological farming option for Summer Maize in the oasis region of Northwest China

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