Abstract
In the agroforestry system, the organic matter in the farmland and natural ecosystem enters the farmland soil in a mixed form to improve soil fertility and carbon pool quality. However, it is unclear how soil microbial carbon-degrading enzyme activity responds to carbon dynamics in this process. Therefore, we took farmland in the Loess Plateau as the research object, combining the application of corn straw and Robinia pseudoacacia leaves in a mass ratio of 4:0, 3:1, 2:2, 1:3, and 0:4 for returning to the field. We measured corn grain yield, carbon emission, organic carbon pool component content, and carbon-degrading enzyme activity of the farmland. The results showed that combining corn straw and Robinia pseudoacacia leaves had a significant impact on soil organic carbon components (readily oxidizable organic carbon and recalcitrant organic carbon), carbon-degrading enzymes (polyphenol oxidase, peroxidase, and cellobiohydrolase), and cumulative carbon emissions. The trend of different indicators in different treatments during the corn growth period was similar. We found that soil carbon emissions were closely related to ROC and soil oxidase activity, while soil carbon content was closely related to soil hydrolase activity. Compared to not returning straw to the field, the corn straw and Robinia pseudoacacia leaves returned to the field in a mass ratio of 1:3(Y1C3) can increase corn grain yield by 32.04%. The Y1C3 treatment has the highest soil carbon content and the lowest crop carbon emission efficiency. Soil water content plays a crucial role in the process of carbon pool transformation driven by soil carbon-degrading enzymes. In conclusion, soil carbon dynamics are closely related to the activity of soil carbon-degrading enzymes. Combining the application of corn straw and Robinia pseudoacacia leaves may be a more suitable farming measure for fragile habitats in the Loess Plateau than other solutions.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
Straw and leaf return significantly affected readily oxidizable and recalcitrant soil organic carbon.
- Taxon
- Corn
Zea mays subsp. mayst0 - Treatment
- corn straw and Robinia pseudoacacia leavese0
- Outcome
- soil organic carbon components (readily oxidizable organic carbon and recalcitrant organic carbon)e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Yield in Loess Plateau”
e0“combining corn straw and Robinia pseudoacacia leaves had a significant impact on soil organic carbon components (readily oxidizable organic carbon and recalcitrant organic carbon)”
Claim · model-written summary
Straw and leaf return significantly affected three carbon degrading enzymes.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- corn straw and Robinia pseudoacacia leavese0
- Outcome
- carbon-degrading enzymes (polyphenol oxidase, peroxidase, and cellobiohydrolase)e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Yield in Loess Plateau”
e0“combining corn straw and Robinia pseudoacacia leaves had a significant impact on soil organic carbon components (readily oxidizable organic carbon and recalcitrant organic carbon), carbon-degrading enzymes (polyphenol oxidase, peroxidase, and cellobiohydrolase), and cumulative carbon emissions”
Claim · model-written summary
Straw and leaf return significantly affected cumulative carbon emissions.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- corn straw and Robinia pseudoacacia leavese0
- Outcome
- cumulative carbon emissionse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Yield in Loess Plateau”
e0“combining corn straw and Robinia pseudoacacia leaves had a significant impact on soil organic carbon components (readily oxidizable organic carbon and recalcitrant organic carbon), carbon-degrading enzymes (polyphenol oxidase, peroxidase, and cellobiohydrolase), and cumulative carbon emissions”
Claim · model-written summary
Soil carbon emissions were closely related to ROC and soil oxidase activity.
- Taxon
- CornZea mays subsp. mayst0
- Compound
- ROCe0
- Outcome
- soil carbon emissionse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Yield in Loess Plateau”
e0“soil carbon emissions were closely related to ROC and soil oxidase activity”
Claim · model-written summary
Soil carbon content was closely related to hydrolase activity.
- Taxon
- CornZea mays subsp. mayst0
- Gene
- soil hydrolasee0
- Outcome
- soil carbon contente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Yield in Loess Plateau”
e0“soil carbon content was closely related to soil hydrolase activity”
Claim · model-written summary
A 1:3 straw to leaf treatment raised corn grain yield 32.04% over no straw return.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- corn straw and Robinia pseudoacacia leaves returned to the field in a mass ratio of 1:3(Y1C3)e0
- Outcome
- corn grain yielde0
- Direction
- increasee0
- Value
- 32.04%e0
- Comparator
- not returning straw to the fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Yield in Loess Plateau”
e0“Compared to not returning straw to the field, the corn straw and Robinia pseudoacacia leaves returned to the field in a mass ratio of 1:3(Y1C3) can increase corn grain yield by 32.04%”
Claim · model-written summary
Y1C3 had the highest soil carbon content.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Y1C3e0
- Outcome
- soil carbon contente0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Yield in Loess Plateau”
e0“The Y1C3 treatment has the highest soil carbon content and the lowest crop carbon emission efficiency”
Claim · model-written summary
Y1C3 had the lowest crop carbon emission efficiency.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Y1C3e0
- Outcome
- crop carbon emission efficiencye0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Yield in Loess Plateau”
e0“The Y1C3 treatment has the highest soil carbon content and the lowest crop carbon emission efficiency”
Claim · model-written summary
Soil water content played a crucial role in carbon pool transformation driven by enzymes.
- Taxon
- CornZea mays subsp. mayst0
- Outcome
- carbon pool transformatione0
- Qualifier
- Soil water contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Yield in Loess Plateau”
e0“Soil water content plays a crucial role in the process of carbon pool transformation driven by soil carbon-degrading enzymes”
Claim · model-written summary
The authors suggest combining straw and leaves as a farming measure in the Loess Plateau.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- corn straw and Robinia pseudoacacia leavese0
- Outcome
- more suitable farming measuree0
- Setting
- Loess Plateaue0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Yield in Loess Plateau”
e0“Combining the application of corn straw and Robinia pseudoacacia leaves may be a more suitable farming measure for fragile habitats in the Loess Plateau than other solutions”
The same questions in other papers
Zea mays subsp. mays · yield · Zea mays (maize)Results differ
195 papers in the same direction as this paper · 85 in the opposite direction · 11 reporting no difference from an alternative
- no effect
- no effect
- negative
288 papers more in this group
See all 292 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.