Search claims · PlantClaims

Associationauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Soil carbon sequestration efficiency decreases as soil organic carbon content increases.

Treatment: soil organic carbon contente0
Outcome: soil organic carbon sequestration efficiencye0
Direction: reducede0
Qualifier: graduallye0

Not reportedTaxon

Verbatim

e0
“The soil organic carbon sequestration efficiency is gradually reduced with the increase of soil organic carbon content.”
✓ located verbatim in the source · abstract, characters 2267–2386

Title

Effect of different fertilization modes on topsoil organic carbon sequestration and productivity in yellow paddy field of southern China

Wang Fe Journal of Plant Nutrition and Fertilizer 2015

Other claims from this paper (18)

Intervention effect NPK significantly increased rice grain yield by 67.1% compared with CK.
Intervention effect NPKM significantly increased rice grain yield by 88.1% compared with CK.
Intervention effect NPKS significantly increased rice grain yield by 84.2% compared with CK.
Intervention effect NPKM rice yield was significantly higher than NPK.
Intervention effect NPKS rice yield was significantly higher than NPK.
Intervention effect Fertilization improved topsoil organic carbon contents by 8.9%-36.8%.
Intervention effect NPKM topsoil organic carbon content was significantly higher than NPKS and NPK.
Observation Organic carbon contents increased by 1.84-5.26 g/kg in all treatments relative to initial soil conditions.
Intervention effect NPKM carbon sequestration rate was significantly different and 2.38 times CK during double cropping rice years using ten-year assessment periods.
Intervention effect NPKS carbon sequestration rate was significantly different and 1.98 times CK during double cropping rice years.
Intervention effect NPKM carbon sequestration rate was significantly different and 1.59 times NPK during double cropping rice years.
Intervention effect NPKS carbon sequestration rate was significantly different and 1.32 times NPK during double cropping rice years.
Intervention effect Carbon sequestration rates did not differ significantly between NPK and CK.
Association Annual organic carbon input had a very significant power function relationship with paddy ecosystem carbon sequestration.
Association Fertilized soil organic carbon contents correlated very significantly with rice grain yields.
Intervention effect Long-term no fertilizer is interpreted to maintain a slight increase in soil organic carbon.
Recommendation The authors endorse chemical fertilizer plus cattle manure as a measure to improve productivity and fix carbon compared with chemical fertilizer alone.
Recommendation The authors endorse chemical fertilizer plus straw as a measure to improve productivity and fix carbon compared with chemical fertilizer alone.

Associationobservedreview summarymeasured

Claim · model-written summary

Soil carbon content was strongly related to climate and altitude.

Outcome: Soil carbon contente0
Qualifier: climate and altitudee0

Not reportedTaxonSettingDirection

Verbatim

e0
“Soil carbon content is strongly related to climate and altitude”
✓ located verbatim in the source · abstract, characters 400–463

Title

Carbon storage in forest soils

A. F. HARRISON; P. J. A. HOWARD; D. M. HOWARD; et al. Forestry An International Journal of Forest Research 1995. doi:10.1093/forestry/68.4.335

Other claims from this paper (7)

Observation British soils were estimated to hold about 22 × 10 9 t carbon.
Observation British vegetation including forests held 115 × 10 6 t carbon.
Observation Peats and peaty-surfaced soils contained 86 percent of soil carbon.
Intervention effect Conversion of lowland cultivated land to forest can accumulate soil carbon.
Intervention effect Forest felling may decrease the soil carbon store.
Observation Soil carbon may recover toward original levels decades after reafforestation.
Intervention effect Shorter forest rotations may cause long-term soil carbon decline.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Mulch alone did not increase total soil carbon or carbon content of any measured soil fraction.

Treatment: mulch alonee1
Outcome: total soil carbon or carbon content of any measured soil fractione1
Direction: did not increasee1

Not reportedTaxonComparator

Verbatim

e1
“However, mulch alone did not increase total soil carbon or carbon content of any measured soil fraction”
✓ located verbatim in the source · abstract, characters 1002–1105

Title

Mulch and Compost for Restoration of Soil Health in a Semi-Arid Rangeland

Ariel Marc Leger UA Campus Repository (The University of Arizona) 2020

Other claims from this paper (10)

Intervention effect Mesquite mulch alone increased soil moisture and plant available nitrogen.
Intervention effect Mesquite mulch alone increased cover and abundance of plants.
Intervention effect Combined with compost, total SOC, labile-pool carbon and SOC in stable aggregate and mineral protected pools increased.
Observation Carbon in protected pools did not resist high levels of dispersion.
Intervention effect Compost increased mean soil moisture, but not during dry times of the year.
Intervention effect Compost at 6 cm applications reduced the cover and abundance of plants.
Intervention effect Compost at 3 cm applications increased the growth and cover of seeded grasses.
Recommendation Compost is not recommended at either 3 cm or 6 cm rates of application.
Recommendation Mesquite branch mulch is highly promising for improving soil health and short-term plant establishment.
Observation Neither amendment is likely to result in persistent soil carbon gains unless careful management actions are taken.

Associationobservedoriginal resultmeasured

Claim · model-written summary

Regression models were similar for both transects for soil carbon content with elevation, Rwm index with elevation, and species number with soil carbon content.

Taxon: vascular plante1
Outcome: Regression modelse7
Direction: similare7
Qualifier: soil carbon content – elevation; Rwm index – elevation; species number – soil carbon contente7
Setting: both transectse7

Verbatim

e1
“number of vascular plant species”
✓ located verbatim in the source · abstract, characters 668–700

e7
“Regression models, which were similar for both transects, concern the following pair of variables: soil pH – slope; soil conductivity – elevation; soil moisture – elevation; soil carbon content – elevation; Rwm index – elevation; species number – soil carbon content”
✓ located verbatim in the source · abstract, characters 1149–1415

Title

Landscape scale of topography-soil-vegetation relationship : influence of land use and land form

Jerzy Solon; Ewa Roo-Zielińska; Marek Degórski Polish Journal of Ecology 2012

Other claims from this paper (7)

Associationobservedoriginal resultsimulated

Claim · model-written summary

Initial soil carbon content had an inverse relationship with sequestration rates.

Taxon: willowSalixt0
Outcome: rates of soil carbon sequestratione0
Direction: inverse relationshipe0
Comparator: initial soil carbon contente0

Verbatim

e0
“initial soil carbon content (an inverse relationship with rates of soil carbon sequestration)”
✓ located verbatim in the source · abstract, characters 1250–1343

t0
“willow”
✓ located verbatim in the source · title, characters 97–103

Title

A modelling analysis of the potential for soil carbon sequestration under short rotation coppice willow bioenergy plantations

P. Grogan; R. Matthews Soil Use and Management 2002. doi:10.1111/j.1475-2743.2002.tb00237.x

Other claims from this paper (4)

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Corn cultivation had higher soil carbon content.

Taxon: cornZea mays subsp. mayse0
Outcome: carbon contente0
Direction: Highere0

Verbatim

e0
“Higher carbon content was recorded under corn cultivation”
✓ located verbatim in the source · abstract, characters 408–465

Title

The Impact of Perennial Covers on Soil Microbiome and Nutrient Dynamic

Narmin Najafzadeh International Journal of Pharmaceutical and Bio-Medical Science 2023. doi:10.47191/ijpbms/v3-i9-02

Other claims from this paper (5)

Intervention effect Unfertilized perennialization improved crop yield versus conventional annual crop fallow.
Intervention effect Unfertilized perennialization enhanced soil health indicators versus annual crop fallow.
Intervention effect Excess nitrogen fertilization increased soil bulk density.
Intervention effect Perennialization without fertilizer improved soil bulk density.
Observation Perennial covers had a higher soil carbon to nitrogen ratio.

Associationobservedoriginal resultmeasured

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

Verbatim

t0
“Corn Yield in Loess Plateau”
✓ located verbatim in the source · title, characters 94–121

e0
“soil carbon content was closely related to soil hydrolase activity”
✓ located verbatim in the source · abstract, characters 1175–1241

Title

The Impact of Combining Robinia pseudoacacia Leaves and Corn Straw on Soil Carbon Content and Corn Yield in Loess Plateau

Hanyu Liu; Jianjian Liu; Zhenjiao Zhang; et al. Agronomy 2024. doi:10.3390/agronomy14040689

Other claims from this paper (9)

Intervention effect Straw and leaf return significantly affected readily oxidizable and recalcitrant soil organic carbon.
Intervention effect Straw and leaf return significantly affected three carbon degrading enzymes.
Intervention effect Straw and leaf return significantly affected cumulative carbon emissions.
Association Soil carbon emissions were closely related to ROC and soil oxidase activity.
Intervention effect A 1:3 straw to leaf treatment raised corn grain yield 32.04% over no straw return.
Intervention effect Y1C3 had the highest soil carbon content.
Intervention effect Y1C3 had the lowest crop carbon emission efficiency.
Mechanism Soil water content played a crucial role in carbon pool transformation driven by enzymes.
Recommendation The authors suggest combining straw and leaves as a farming measure in the Loess Plateau.

Observationauthor interpretationreview summarypositivebasis n/a

Claim · model-written summary

Cover crops can increase soil organic carbon content.

Taxon: cover cropse1
Outcome: soil organic carbon contente1

Verbatim

e1
“Although cover crops can increase soil organic carbon content”
✓ located verbatim in the source · abstract, characters 475–536

Title

Optimizing Carbon Sequestration Through Cover Cropping in Mediterranean Agroecosystems: Synthesis of Mechanisms and Implications for Management

Nadia Moukanni; Kelsey M. Brewer; Amélie C. M. Gaudin; et al. Frontiers in Agronomy 2022. doi:10.3389/fagro.2022.844166

Other claims from this paper (1)

Association Cover crops may lead to lower soil carbon stocks when considered with co-management strategies, especially at greater soil depths.

Associationobservedoriginal resultsimulated

Claim · model-written summary

Soil organic carbon content and nitrogen content are related and show a consistent trend.

Compound: nitrogene0
Outcome: Soil organic carbon contente0

Not reportedTaxonDirection

Verbatim

e0
“Soil organic carbon content and nitrogen content has a certain relevance, and the trend is consistent”
✓ located verbatim in the source · abstract, characters 772–873

Title

Studies on Changes of Soil Carbon and Nitrogen Dynamics under Long-Term Fertilizer in the Black Soil Based on DSSAT Model

Wei Guo; Zhong Qing Zhang; Jin Hua Liu; et al. Advanced materials research 2014. doi:10.4028/www.scientific.net/amr.1073-1076.1743

Other claims from this paper (8)

Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Soil carbon stock correlated positively with biomass carbon content.

Taxon: biomasse0
Outcome: biomass C contente0
Direction: positive correlatione0
Comparator: soil C stocke0

Verbatim

e0
“There is a positive correlation between soil C stock and biomass C content.”
✓ located verbatim in the source · abstract, characters 1410–1485

Title

Comparison of carbon content in soil and biomass in various types of sub-optimal dryland use in Aceh Besar, Indonesia

S Sufardi; S Syafruddin; T Arabia; et al. IOP Conference Series Earth and Environmental Science 2022. doi:10.1088/1755-1315/1116/1/012049

Other claims from this paper (4)

Observation Soil and vegetation biomass carbon varied among land uses.
Observation Primary forest had the highest biomass carbon potential.
Observation Primary forest biomass carbon potential was 241.71 ± 24.46 t ha -1.
Observation Bare land biomass carbon potential was 0.53 ±0.06 t ha -1.

“soil carbon content”

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