Quantitative Approaches in Assessing Soil Organic Matter Dynamics for Sustainable Management

Murindangabo, Yves Theoneste; Kopecký, Marek; Konvalina, Petr; Ghorbani, Mohammad; Perná, Kristýna; Nguyen, Thi Giang; Bernas, Jaroslav; Baloch, Sadia Babar; Hoang, Trong Nghia; Eze, Festus Onyebuchi; Ali, Shahzaib

doi:10.3390/agronomy13071776

Cited by 7 publications

(8 citation statements)

References 142 publications

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“…To understand the quality and decomposition rates of labile soil organic matter fractions in different land use types, it was essential to study the kinetics of soil carbon oxidation [ 8 , 22 ]. In this study, the alternative fallow and conventional farming land exhibited higher oxidation compared to other land use types.…”

Section: Discussionmentioning

confidence: 99%

“…It serves as a measure of how well the organic matter in the soil is protected from decomposition. A higher SR value suggests a stronger degree of stabilization, indicating that a larger portion of organic carbon is less susceptible to rapid breakdown which has the potential to contribute to long-term carbon storage in the soil [ 22 – 24 ].…”

Section: Discussionmentioning

confidence: 99%

“…The evaluation of the labile fraction (C L ) and stable fractions (C S ) of SOM was conducted separately to assess both their quantity and quality. The quality of the C L was determined based on its oxidation speed constant (k), which provides insights into its decomposition rate [ 8 , 22 ]. On the other hand, the quality of the C S was expressed in terms of stable fraction Stability Ratio (SR), which offer information about its proportion and contribution to the long-term total organic matter.…”

Section: Methodsmentioning

confidence: 99%

“…The Carbon Management Index (CMI) is an evaluation model used to assess the impact of specific land uses on soil quality compared to a reference land use soil [ 22 ]. It takes into consideration the relationship between soil carbon supply and both the total pool size and lability (turnover rate).…”

Section: Methodsmentioning

confidence: 99%

“…To enhance the sensitivity of soil quality assessments across diverse land uses, the incorporation of more refined indicators such as the carbon management index (CMI), and stability ratio (SR) has been employed. These indicators offer valuable insights into the management, lability, and stability of soil carbon across various land use practices [ 5 , 22 ]. The CMI provides insights into the capacity of a land use type to promote soil quality and the SR represents the percentage of the stabilized fraction in relation to the total organic matter carbon content in the sample [ 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

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Comparative analysis of soil organic matter fractions, lability, stability ratios, and carbon management index in various land use types within bharatpur catchment, Chitwan District, Nepal

Murindangabo,

Kopecký,

Hoang

et al. 2023

Carbon Balance Manage

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Background Land use and land cover changes have a significant impact on the dynamics of soil organic matter (SOM) and its fractions, as well as on overall soil health. This study conducted in Bharatpur Catchment, Chitwan District, Nepal, aimed to assess and quantify variations in total soil organic matter (TSOMC), labile organic matter fraction (CL), stable organic matter fraction (CS), stability ratio (SR), and carbon management index (CMI) across seven land use types: pastureland, forestland, fruit orchards, small-scale conventional agricultural land, large-scale conventional agricultural land, large-scale alternative fallow and conventional agricultural land, and organic farming agricultural land. The study also explored the potential use of the Carbon Management Index (CMI) and stability ratio (SR) as indicators of soil degradation or improvement in response to land use changes. Results The findings revealed significant differences in mean values of TSOMC, CL, and CS among the different land use types. Forestland and organic farming exhibited significantly higher TSOMC (3.24%, 3.12%) compared to fruit orchard lands (2.62%), small scale conventional farming (2.22%), alternative fallow and conventional farming (2.06%), large scale conventional farming (1.84%) and pastureland (1.20%). Organic farming and Forestland also had significantly higher CL (1.85%, 1.84%) and CS (1.27%, 1.39%) compared to all other land use types. Forest and organic farming lands showed higher CMI values, while pastures and forests exhibited higher SR values compared to the rest of the land use types. Conclusions This study highlights the influence of various land use types on soil organic matter pools and demonstrates the potential of CMI and SR as indicators for assessing soil degradation or improvement in response to land use and land cover changes.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparative analysis of soil organic matter fractions, lability, stability ratios, and carbon management index in various land use types within bharatpur catchment, Chitwan District, Nepal

Murindangabo,

Kopecký,

Hoang

et al. 2023

Carbon Balance Manage

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The content and quality of soil carbon and nitrogen as well as enzymatic activity in soils with diverse texture following different land use and management practices

Dębska,

Długosz,

Piotrowska‐Długosz

2024

Soil Use and Management

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A detailed knowledge concerning the responses of different carbon pools and the activity of soil enzymes to various land uses is critical for maintaining soil health and quality. Accordingly, the aim of this study was to determine the effects of different soil uses and management practices on the contents of total, dissolved and microbial biomass C and N as well as the fractional composition of humus and the set of enzyme activities. This study was conducted to compare the status of soil properties in the surface horizons of 24 soils with diverse textures, following the different land uses. Thus, arable lands, short‐term cultivation, vineyards, orchards, hop plantations and grasslands were compared. The contents of total and dissolved carbon and nitrogen, the fractional composition of humus, the content of microbial biomass C and N and the enzymatic activity were assessed. The application of various land uses affects the C and N content of the soils and their humus fractions as well as their enzymatic activities differently. Generally, both grass‐based systems (grasslands and orchards) revealed the most positive effects in most of the studied properties as compared to other land use systems. By contrast, long‐term tillage and/or the lack of permanent plant cover (cereals, grapevine and hop cultivation) adversely affects the studied properties of the soils. No clear pattern of changes was detected in terms of the fractional composition of the SOM. The enzymatic activity changed because of their different functions in SOM transformation and because of the differences in the complexities of the enzymatic substrates occurring in the soil. Most of the studied properties were significantly higher in soils with a loamy texture as compared to the sandy loam and loamy sand soils. Differently managed soils presented a distinctive response in terms of organic matter content and quality as well as extracellular enzyme activity as a function of the tillage regime applied and different cultivated plants. In general terms, both land uses which were based on permanent grass cultivation revealed that the most positive effects occurred on these studied properties as compared to other land use systems. Therefore, we may conclude that permanent grasslands play a special role in the status of soil organic matter, microbial content and enzymatic activity.

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Which index is better for assessing the success of reclamation: Naturalness or hemeroby?

Podpriatova,

Kunakh,

Zhukov

2023

Biosys. divers.

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The destruction of soil and vegetation caused by mining, if not prevented through careful planning, is usually extreme, as the original ecosystems have been grossly disturbed or buried in the mining process. A radical reconstruction is therefore necessary. In nature, this happens through the well-known processes of primary succession, without human intervention. In the interests of the economy and the preservation of our natural resources, reclamation should try to involve the same processes. When planning reclamation, it is crucial to clearly define goals, objectives and success criteria to allow for systematic reclamation. The need for methods to assess the effectiveness in achieving environmental and social goals is increasing, especially if agricultural land is to be restored. Over time, reclamation goals may need to be modified depending on the direction of the reclamation succession. The reclamation of mined areas requires the application of monitoring tools to understand the achievement of potential success. This problem can be solved by studying the biodiversity of plant communities and soil factors of mining areas as habitats in industrialized post-mining landscapes. Thus, the reclamation of territories disturbed by industrial activities is planned with the need to correct the trajectory of the restoration process, so it requires indicators that can be used to monitor the success of the planned process. The article tests the following hypotheses: 1) the dynamics of the reclamation process can be monitored using the indices of naturalness and hemeroby; 2) at the initial stages of reclamation, the hemeroby index has an advantage due to its greater sensitivity in this range of anthropogenic transformation levels. The plant community formed as a result of spontaneous growth of the reclamation sites was represented by 70 species of vascular plants. The projective vegetation cover was 22.0 ± 0.30%. In one test plot, 8.4 ± 0.1 plant species were found. The analysis of the synoptic phytosociological table revealed that the vegetation cover of the reclamation site was represented by nine associations from the vegetation classes Artemisietea vulgaris and Stellarietea mediae. The hemeroby of the communities averaged 85.0 ± 0.22. The lowest level of hemeroby was found within the Cirsio-Lactucetum serriolae association. The average level of hemeroby was found for the associations Medicagini lupulinae-Agropyretum repentis, Ambrosio artemisiifoliae-Cirsietum setosi and Carduo acanthoidis-Onopordetum acanthi. The highest level of hemeroby was found for the associations Agropyretum repentis and Convolvulo arvensis-Agropyretum repentis. The highest level of hemeroby was observed in those plant communities formed on lithozems on the red-brown clays, and the lowest formed on the pedozems. A negative correlation was found between hemeroby and naturalness for all lithozems. No statistically significant correlation was found for pedozems. For the classification of associations, environmental factors such as salt content in the soil solution, nitrogen content, ombroclimate, light regime, and naturalness are of greatest importance. The traditional application of the hemeroby scale is to assess the level of anthropogenic transformation of an ecosystem, i.e. to quantify how far the ecosystem has deviated from its natural state. In our study, we use the hemeroby index to observe how the plant community returns to its natural state, which can be considered as a marker of the effectiveness of the reclamation process. This approach allows us to contrast the indicators of naturalness and hemeroby, which are formally symmetrical: the higher the hemeroby, the lower the naturalness should be. In a wide range of levels of anthropogenic pressure, this pattern is certainly true. The peculiarity of the naturalness index is that it is more sensitive in the range of anthropogenic transformation that occurs at the initial stages of deviation of the natural community from the natural state at low levels of anthropogenic impact. In turn, the hemeroby index is more sensitive to changes in the community under conditions of a high level of anthropogenic transformation.

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Quantitative Approaches in Assessing Soil Organic Matter Dynamics for Sustainable Management

Cited by 7 publications

References 142 publications

Comparative analysis of soil organic matter fractions, lability, stability ratios, and carbon management index in various land use types within bharatpur catchment, Chitwan District, Nepal

Comparative analysis of soil organic matter fractions, lability, stability ratios, and carbon management index in various land use types within bharatpur catchment, Chitwan District, Nepal

The content and quality of soil carbon and nitrogen as well as enzymatic activity in soils with diverse texture following different land use and management practices

Which index is better for assessing the success of reclamation: Naturalness or hemeroby?

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