Temporal dynamics of nutrient release from mulching of legume roots and shoots litter driven by microbial community during decomposition in organic orchards

BMC Plant Biology, Journal Year: 2025, Volume and Issue: 25(1)

Published: March 24, 2025

Grass residue decomposition is crucial for nutrient cycling in agro-ecosystems, enhancing utilization efficiency and supporting sustainable crop management. While grass mulching has been widely studied improving orchard soil fertility, the role of microbial communities decomposing different plant organs remains unclear. Before decomposition, aboveground belowground parts were harvested placed separate litterbags, which later used evaluating rate chemical characteristics shoots roots 40 days (at 10 intervals). The changes microenvironment, community measured after 0, 1 3 months, alongside analysis key taxa under residues treatments. remaining mass root litter treatment was significantly higher than that other treatments by 72.97%, 17.53% during 1–10 30–40 days, respectively. During 40-days period, release potassium (K) from reached 58.61%, lignin recorded at 56.94%, whereas carbon (C), nitrogen (N), phosphorus (P) remained relatively stable. Despite no significant nodes, edges, links 30 90 co-occurrence network exhibited modularity values 0.774 0.773, those observed random networks, indicating presence functional modules enhanced stability within community. Litter rates positively influencing fertility keystone decomposers, while its microenvironment affects rates. recalcitrance, composition plays a regulating structure thereby maintaining ecosystem functionality.

Language: Английский

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Successive organic fertilizer substitution alleviated net ecosystem carbon loss in new vegetable field converted from rice paddy

Applied Soil Ecology, Journal Year: 2025, Volume and Issue: 211, P. 106155 - 106155

Published: May 2, 2025

Language: Английский

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How Land Use Transitions Contribute to the Soil Organic Carbon Accumulation from 1990 to 2020

Published: Feb. 29, 2024

SOC stock (SOCS) changes caused by land use are still unclear, and understanding this response is essential for many environmental policies management practices. In study, we investigated the temporal-spatial vertical distribution characteristics of SOCS on Western Sichuan Plateau (WSP) using sparrow search algorithm-random forest regression (SSA-RFR) models with excellent model applicability accuracy. The varia-tions in were modeled 1080 soil samples a set nine covariates. We analyzed effect WSP. total increased 18.03 Tg C from 1990 to 2020. results study confirmed that area has significantly since 2010, an increase 27.88 compared 2010. found spatial southeast northwest, decreased increasing depth. Forest grassland main sources SOCS, accounted 37.53 59.39% pool 2020, respectively. Expansion wetlands, forest, areas could area.

Language: Английский

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Understanding the Effects of Organic Versus Conventional Farming on Soil Organic Carbon Characteristics– a Chronosequence Study

Published: Jan. 1, 2024

Organic farming aims at producing high quality, nutritious food while sustaining the health of soils and ecosystems, for which it relies on ecological processes. The amount quality soil organic carbon (SOC) influence many processes that underlie ecosystem services. However, effect especially SOC is not yet clear. We therefore investigated long-term arable in topsoil.On two contrasting types (i.e., clay vs. sand), we sampled a chronosequence certified organically managed commercial farms (0 to 34 69 years farming, respectively) paired with nearby conventional counterparts same soil. collected samples basic information management such as crop rotation fertilization. Total content properties were measured, four different techniques (POX-C oxidation, Rock-Eval thermal analysis, POM-MAOM fractionation, elemental C:N analysis) used characterize quality.In soils, particularly those low Fe oxide content, confirmed our hypothesis can increase total labile fractions over time, thus resulting lower overall stability. also found indications effects are co-dependent content. duration was affect or sandy soils.Despite strict farm selection criteria, large variations environmental conditions, farm-specific practices, land use history complicated identification individual drive observed changes dynamics response farming. This variation highlighted importance intrinsic dynamics, need develop soil-specific recommendations. Despite this complexity, study has clearly revealed potential change cycling towards higher more bioavailable strengthening associated

Language: Английский

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Soil Health Intensification through Strengthening Soil Structure Improves Soil Carbon Sequestration

Agriculture, Journal Year: 2024, Volume and Issue: 14(8), P. 1290 - 1290

Published: Aug. 5, 2024

Intensifying soil health means managing soils to enable sustainable crop production and improved environmental impact. This paper discusses intensification by reviewing studies on the relationship between structure, organic matter (SOM), ecosystem carbon budget. SOM is strongly involved in development of nutrient water supply power, acid buffering most fundamental parameter for testing health. At same time, can be both a source sink atmospheric carbon. A comparison ratio clay content (SOC/Clay) used as an indicator structure status health, it has shown significantly lower values cropland than grassland forest soils. clearly shows that depletion leads degradation status. On other hand, improving lead increasing sequestration. Promoting sequestration making net balance (NECB) positive. Furthermore, mitigate climate change, necessary aim improve greenhouse gas (NGB) serving gases (GHG). The results manure application test four managed grasslands Andosols Japan showed was apply more 2.5 tC ha−1 y−1 avoid reduction loss SOC field. order offset increase GHG emissions due N2O from increased nitrogen input, 3.5 ha−1y−1 manure. To intensify increasingly important consider management with fertilizers reduce chemical without reducing yields.

Language: Английский

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Opposite effect on soil organic carbon between grain and non-grain crops: Evidence from Main Grain Land, China

Agriculture Ecosystems & Environment, Journal Year: 2024, Volume and Issue: 379, P. 109364 - 109364

Published: Nov. 9, 2024

Language: Английский

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Challenges and strategies in estimating soil organic carbon for multi-cropping systems: a review

Carbon Footprints, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 25, 2024

Multi-cropping systems play a crucial role in global agricultural production. Accurately estimating the soil carbon sequestration capacity of multi-cropping is significant importance for enhancing productivity, mitigating greenhouse gas emissions, and reducing footprint. However, cycling more complex compared with single-cropping systems, existing assessment methods cannot accurately estimate high operability. Here, we reviewed accuracy efficiency three primary methods, including statistical models, process-based Intergovernmental Panel on Climate Change (IPCC) steady-state method. Our study concludes that it difficult to simulate dynamic evolution organic (SOC) using while well simulation through models demands large amount data. Additionally, IPCC Tier 2 method be directly applied SOC due mismatches parameters time steps. We suggest modifying structures by revising inventory unit redetermining parameter values, which should efficiently address its bottleneck systems. Moreover, long-term experimental observations multi-model ensemble simulations are beneficial determining values data deficiencies 2. This aims explore pathways improving estimation and, thus, footprint calculation worldwide.

Language: Английский

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Understanding organic agriculture based on coupled human-earth systems for sustainable land use and rural development in China

Land Use Policy, Journal Year: 2025, Volume and Issue: 152, P. 107506 - 107506

Published: Feb. 16, 2025

Language: Английский

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Decades-long organic tea production is distinguished by N deficiency: Evidence from soil and tea δ15N data

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 929, P. 172625 - 172625

Published: April 24, 2024

Language: Английский

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Tracking Soil Health: Monitoring and Modeling the Soil-Plant System

Authorea (Authorea), Journal Year: 2024, Volume and Issue: unknown

Published: June 10, 2024

The assessment of soil health has evolved from focusing primary on agricultural productivity to an integrated evaluation biota and biotic processes that impact properties. Consequently, shifted a predominantly physico-chemical approach incorporating ecological, biological molecular microbiology methods. These methods enable comprehensive exploration microbial community properties their responses environmental changes arising climate change anthropogenic disturbances. Despite the increasing availability indicators (physical, chemical, biological), holistic mechanistic linkage between functions across multiple spatiotemporal scales not yet been fully established. This article reviews state-of-the-art monitoring, understanding how soil-microbiome-plant contribute feedback mechanisms causes in properties, as well these have functions. Furthermore, we survey opportunities afforded by soil-plant digital twin approach, integrative framework amalgamates process-based models, Earth Observation data, data assimilation, physics-informed machine learning, achieve nuanced comprehension health. review delineates prospective trajectory for monitoring embracing systematically observe model system. We further identify gaps opportunities, provide perspectives future research enhanced intricate interplay hydrological processes, hydraulics, microbiomes, landscape genomics.

Language: Английский

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