المؤلفون: Silvana María José Sione, Marcelo Germán Wilson, Silvia Gabriela Ledesma, Emmanuel Adrián Gabioud, José Daniel Oszust, Leandro Javier Rosenberger

المصدر: Ecological Processes, Vol 12, Iss 1, Pp 1-13 (2023)

مصطلحات موضوعية: Carbon pool, Forest biomass, Soil parameters, Ecosystem services, Ecology, QH540-549.5

الوصف: Abstract Background The conversion of forests into agricultural lands can be a threat because the forests carbon stored could be a source of emissions. The capacity to improve the predictions on the consequences of land use change depends on the identification of factors that influence carbon pools. We investigated the key driving factors of tree biomass and soil carbon pools in xerophytic forests in northeastern Argentina. Based on analyses of forest structure variables and abiotic factors (topography and soil properties) from 18 mature forests, we evaluated carbon pools using uni- and multivariate (redundancy analysis) methods. Results The total carbon pool was estimated at 102.4 ± 24.0 Mg ha−1. Soil organic carbon storage is the single largest carbon pool relative to tree biomass, representing 73.1% of total carbon. Tree canopy cover and basal area were positively correlated with biomass carbon pool (r = 0.77 and r = 0.73, p

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/2192-1709Test

الوصول الحر: https://doaj.org/article/d324b77ea3164419bca44534ca6f6dc1Test

المؤلفون: Anjali Chandrol Solanki, Narendra Singh Gurjar, Satish Sharma, Zhen Wang, Ajay Kumar, Manoj Kumar Solanki, Praveen Kumar Divvela, Kajal Yadav, Brijendra Kumar Kashyap

المصدر: Frontiers in Microbiology, Vol 15 (2024)

مصطلحات موضوعية: seasonal variation, forest soil, soil parameters, bacteria, fungi, Microbiology, QR1-502

الوصف: In dry deciduous tropical forests, both seasons (winter and summer) offer habitats that are essential ecologically. How these seasonal changes affect soil properties and microbial communities is not yet fully understood. This study aimed to investigate the influence of seasonal fluctuations on soil characteristics and microbial populations. The soil moisture content dramatically increases in the summer. However, the soil pH only gradually shifts from acidic to slightly neutral. During the summer, electrical conductivity (EC) values range from 0.62 to 1.03 ds m-1, in contrast to their decline in the winter. The levels of soil macronutrients and micronutrients increase during the summer, as does the quantity of soil organic carbon (SOC). A two-way ANOVA analysis reveals limited impacts of seasonal fluctuations and specific geographic locations on the amounts of accessible nitrogen (N) and phosphorus (P). Moreover, dehydrogenase, nitrate reductase, and urease activities rise in the summer, while chitinase, protease, and acid phosphatase activities are more pronounced in the winter. The soil microbes were identified in both seasons through 16S rRNA and ITS (Internal Transcribed Spacer) gene sequencing. Results revealed Proteobacteria and Ascomycota as predominant bacterial and fungal phyla. However, Bacillus, Pseudomonas, and Burkholderia are dominant bacterial genera, and Aspergillus, Alternaria, and Trichoderma are dominant fungal genera in the forest soil samples. Dominant bacterial and fungal genera may play a role in essential ecosystem services such as soil health management and nutrient cycling. In both seasons, clear relationships exist between soil properties, including pH, moisture, iron (Fe), zinc (Zn), and microbial diversity. Enzymatic activities and microbial shift relate positively with soil parameters. This study highlights robust soil-microbial interactions that persist mainly in the top layers of tropical dry deciduous forests in the summer and winter seasons. It provides insights into the responses of soil-microbial communities to seasonal changes, advancing our understanding of ecosystem dynamics and biodiversity preservation.

وصف الملف: electronic resource

العلاقة: https://www.frontiersin.org/articles/10.3389/fmicb.2024.1258934/fullTest; https://doaj.org/toc/1664-302XTest

الوصول الحر: https://doaj.org/article/893776417a9740279c300fe55943be68Test

المؤلفون: Bispo, Antonio, Cornu, Sophie, S., Keestra, S., Fantappie, M., Egmond, F. Van, Smreczak, B., Bakacsi, S., Schneider, F., Pavlu, L., Chenu, Claire

المساهمون: Info&Sols (Info&Sols), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Plateforme de géochimie isotopique ASTER-CEREGE, Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement (CEREGE), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Wageningen University and Research Wageningen (WUR), Centro di Viticoltura ed Enologia CREA, Consiglio per la Ricerca in Agricoltura e l’analisi dell’economia agraria = Council for Agricultural Research and Economics (CREA), Institute of Soil Science and Plant Cultivation (IUNG), Institute for Soil Sciences and Agricultural Chemistry (ATK TAKI), Centre for Agricultural Research Budapest (ATK), Hungarian Academy of Sciences (MTA)-Hungarian Academy of Sciences (MTA), Thünen Institute, Czech University of Life Sciences Prague (CZU), Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS), AgroParisTech-Université Paris-Saclay-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), IUSS (International Union of Soil Sciences)

المصدر: Centennial Celebration and Congress of the International Union of Soil Sciences ; https://hal.inrae.fr/hal-04631408Test ; Centennial Celebration and Congress of the International Union of Soil Sciences, IUSS (International Union of Soil Sciences), May 2024, Florence (IT), Italy ; https://www.afes.fr/nos-missions/reconnaitre-et-federer/recherches-participativesTest/

مصطلحات موضوعية: Soil data, Agricultural soil databases, Soil parameters, Europe, Harmonization, [SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study

جغرافية الموضوع: Italy

الوقت: Florence (IT), Italy

الوصف: International audience ; Soil characteristics are needed to evaluate soil quality, soil health and soil-based ecosystem services. While some soil databases exist at the European scale, a much larger wealth of data is present in individual European countries, allowing a more detailed soil assessment. There is thus an urgent and crucial need to combine these data at the European scale. In the frame of EJP SOIL, a survey was conducted to assess the existing soil data sources, focusing on agricultural soils. The survey will become a contribution to the European Soil Observatory which aims to collect metadata of soil databases related to all kind of land uses,including forest and urban soils. Based upon a comprehensive questionnaire, 170 soil databases were identified at local, regional and national scales. Soil parameters were divided into five groups: (1) main soil parameters according to the Global Soil Map specifications; (2) other soil chemical parameters; (3) other physical parameters; (4) other pedological parameters; and (5) soil biological features. This survey shows that while most of the main pedological and chemical parameters are included in more than 70% of the country soil databases, water content, contamination with organic pollutants, and biological parameters are the least frequently reported parameters. Such differences will have consequences when developing an EU policy on soil health as proposed under the EU soil strategy for 2023 and using the data to derive soil health indicators. Many differences in the methods used in collecting, preparing, and analysing the soilswere found, thus requiring harmonization procedures and more cooperation among countries and with the EU. In addition, choosing harmonized and useful interpretation and threshold values for EU soil indicators may be challenging due to the different methods used and the wide variety of soil land-use and climate combinations influencing possible thresholds. The temporal scale of the soil databases reported is also extremely wide, ...

العلاقة: hal-04631408; https://hal.inrae.fr/hal-04631408Test; https://hal.inrae.fr/hal-04631408/documentTest; https://hal.inrae.fr/hal-04631408/file/IUSS_EU_DATA.pdfTest

الإتاحة: https://hal.inrae.fr/hal-04631408Test
https://hal.inrae.fr/hal-04631408/documentTest
https://hal.inrae.fr/hal-04631408/file/IUSS_EU_DATA.pdfTest

المؤلفون: Wasil Mariola, Wydro Urszula, Wołejko Elżbieta

المصدر: Architecture, Civil Engineering, Environment, Vol 16, Iss 3, Pp 131-139 (2023)

مصطلحات موضوعية: biomineralization, micp, soil improvement, soil parameters, ureolytic bacteria, Architecture, NA1-9428, Engineering (General). Civil engineering (General), TA1-2040

الوصف: The aim of this study is to present the effect of treatment with ureolytic bacteria (Sporosarcina pasteurii) on the compressibility parameters of mineral and anthropogenic soils. In the presence of the urease enzyme, secreted by a strain of Sporosarcina pasteurii bacteria, urea hydrolysis occurs, allowing CaCO3 to be precipitated. The literature suggests applying the Microbially Induced Calcite Precipitation (MICP) method to non-cohesive soils. In order to determine whether the biomineralization process occurs in other soil types, cohesive and anthropogenic soils were tested in the laboratory. Compressibility tests were carried out in the laboratory on MICP-treated and untreated soils as reference samples. The process of biocementation in the soil is made possible by the introduction of bacteria into the soil and subsequent activation by a cementation solution (consisting of urea and calcium ions Ca2+). This paper presents the methodology for introducing bacteria into the soil, as well as the effect of the biomineralization process on the deformation parameters of the tested materials.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/2720-6947Test

الوصول الحر: https://doaj.org/article/c497d1cda10647e9819c1901a4d65c67Test

المؤلفون: Bayle Dilnesa, Feyissa Samuel, Tamiru Solomon

المصدر: Open Agriculture, Vol 8, Iss 1, Pp 83-95 (2023)

مصطلحات موضوعية: physico-chemical, micronutrients, soil parameters, cultivated land, grazing land, Agriculture, Agriculture (General), S1-972

الوصف: In the Tekorsh Sub-Watershed, East Gojjam Zone, Ethiopia, researchers investigated the impact of land use patterns and slope position on selected soil physico-chemical parameters. The study area was arbitrarily divided into three slope positions (higher, middle, and lower), two land uses types (grazing and cultivated land), and two soil depths (0–20 and 20–40 cm) with three replications, based on the in situ field survey. For laboratory analysis, a total of 36 composite samples were obtained. Sand, clay, and silt fraction were highly significantly (P ≤ 0.05) affected by the interaction effect of the three factors. Clay and clay loam were the textural classes of the soil in the study area. The interaction effects of the three factors were highly significant (P ≤ 0.001) affected bulk density (D b), total porosity (TP), organic carbon (OC), available phosphorus (AP), exchangeable (Mg2+, Ca2+, and acidity), cation exchange capacity (CEC), and micronutrients (Fe, Mn, Cu, and Zn). The soils were medium to high (1.22–1.44 g/cm3) in D b, very high (45.66–63.13%) in TP, medium to high (15.72–19.56% v/v) in available water holding capacity, low to medium (1.37–2.91%) in OC, very low (1.65–7.68 mg/kg) in AP, high (4.62–5.36 cmol(+)/kg) in exchangeable Mg2+, very high in CEC (43.60–51.06 cmol(+)/kg), Fe (25.20–52.91 mg/kg), Mn (37.29–105.55 mg/kg), Cu (4.04–7.87 kg/kg), and Zn (0.83 2.53 kg/kg). In general, it was discovered that the majority of the assessed soil properties were better in grazing land than in soils utilized for cultivated land uses, and that the lower slope position was preferable to the upper and middle ones.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/2391-9531Test

الوصول الحر: https://doaj.org/article/a7a53bd2ec904eb194589c08ea0c05a2Test

المؤلفون: Renjan, B¹, George, Sansamma, Bindu, B, Joseph, Anis R

المصدر: Journal of Krishi Vigyan 11(suppl):96-100. 2023

المؤلفون: Zec Vojinović, Melita, Ugljar, Irena, Gluhić, David, Dudaš, Slavica, Tomičić, Marin, Peršić, Martina

المصدر: Zbornik Veleučilišta u Rijeci ; ISSN 1848-1299 (Print) ; ISSN 1849-1723 (Online) ; Volume 12 ; Issue 1 (online first)

مصطلحات موضوعية: agricultural soil, soil degradation, soil analysis, soil condition, soil parameters, poljoprivredno tlo, degradacija tla, analiza tla, stanje tla, parametri tla

الوصف: In the context of sustainability and the use of natural resources, it has been often shown that agricultural soils do not reach their productive function to their full potential. The ability of the soil to provide plants with appropriate growing conditions is reduced due to soil degradation. Documenting soil conditions aimed at determining soil quality indicators in relation to soil management enables to identify the type and location of degradation in order to suggest corrective measures to farmers for the soil fertility improvement. Since the basis for the successful agricultural production is appropriate soil quality from one side, and the soil quality improvement, monitoring and protection are priority according to the current legal acts, the new European Soil Strategy for 2030 and the Soil Act planned for 2023 from another side, the soil testing laboratory of the Center for Agriculture and Rural Development of Primorje-Gorski Kotar County (PGKC) conducted the initial studies in 2019. Soil samples from the agricultural field in PGKC were tested using fast methods for following parameters: soil pH, total CaCO3, nitrate content, content of plant available phosphorus, potassium and magnesium, total calcium, aggregate stability and electrical conductivity. The test results idnicated the relative condition of the soil at different locations and in different crops. In addition, the results served as a basis for the sustainable soil management measures suggestion to the farmers in PGKC. ; U kontekstu održivosti i korištenja prirodnih resursa često se pokazuje da poljoprivredna tla ne ostvaruju svoju produktivnu funkciju u potpunosti. Sposobnost tla da pruži biljkama odgovarajuće uvjete za rast i razvoj smanjuje se zbog degradacije tla. Dokumentiranje stanja tla s ciljem utvrđivanja pokazatelja kvalitete tla u vezi s upravljanjem tlom omogućuje identifikaciju vrste i mjesta degradacije kako bi se poljoprivrednicima predložile ispravne mjere za poboljšanje plodnosti tla. S obzirom na to da je temelj uspješne ...

وصف الملف: application/pdf

العلاقة: https://hrcak.srce.hr/317638Test

الإتاحة: https://doi.org/10.31784/zvr.12.1.19Test
https://hrcak.srce.hr/317638Test
https://hrcak.srce.hr/file/459683Test

المؤلفون: Jethava, B A, Patel , K M, Panchal , B H

المصدر: Current Horticulture; Vol. 12 No. 2 (2024): Current Horticulture( May–August); 75–79, ; 2455-7560 ; 2347-7377 ; 10.48165/

مصطلحات موضوعية: INM, Micronutrients, Quality, Nutrient uptake, Soil parameters

الوصف: The experiment was conducted to find out the response of integrated nutrient management and micronutrients on quality, nutrient content, nutrient uptake and soil parameters of tomato at College of Agriculture, Anand Agricultural University, Vaso, during rabi season in 2019-20 and 2020-21. The randomized block design with factorial concept having 14 treatment combinations with three replications comprising two factors having two levels of micronutrients and seven levels of INM was used. Different treatments of INM and micronutrients improved the quality, nutrient uptake and soil parameters. The maximum titrable acidity (0.92%) recorded with M1: zinc@ 100 & N6: 50% RDF + 50% N from vermicompost + bio NPK, while maximum TSS (5.38 oBrix), lycopene (3.08 mg/100 g) and vitamin-C (34.93 mg/100 g) recorded with N6. For nutrient uptake, M1: zinc @ 100 ppm recorded maximum nitrogen uptake by plant (119.71 kg/ha). In INM, treatment N5 recorded maximum nitrogen content (1.72%), phosphorus (0.68%), potash (1.38%), nitrogen uptake (125.75 kg/ha), phosphorus uptake (44.42 kg/ha) and potash uptake (54.95 kg/ha). The INM treatment N5: 50% RDF + 50% N from FYM + Bio NPK recorded maximum microbial count (6.2 × 107 and 7.5 × 107)during 2019-20 and 2020-21, respectively and also maximum available N2O (271.77 kg/ha), available P2O5 (51.08 kg/ha), available K2O (257.13 kg/ha), organic carbon (0.45%), minimum electrical conductivity (1.13 dS/m) and pH (7.76).

وصف الملف: application/pdf

العلاقة: https://acspublisher.com/journals/index.php/chr/article/view/15395/13984Test; https://acspublisher.com/journals/index.php/chr/article/view/15395Test

الإتاحة: https://acspublisher.com/journals/index.php/chr/article/view/15395Test

المؤلفون: Jozef Vilček, Štefan Buday, Štefan Koco, Monika Lörincová, Kristína Gendová Ruzsíková, Miroslav Kudla, Marián Kováčik

المصدر: Journal of Maps, Vol 19, Iss 1 (2023)

مصطلحات موضوعية: Land price, soil parameters, soil price map, Maps, G3180-9980

الوصف: ABSTRACTThe article analyses the relation of market prices in the agricultural land market and selected pedological characteristics of traded lands. During the period of 2009–2018 in 12 districts of Slovakia more than 153,000 plots with different pedo-ecological and geographic conditions have been analysed. Based on soil types, texture composition, steepness, gravel content, and depth, corresponding price levels were derived, and soil price maps were developed. The highest valued soils are of chernozem type (EUR 1.64 m−2), loamy soils (EUR 0.86 m−2), soils on flat land (EUR 1.09 m−2), slightly gravelly soils (EUR 1.02 m−2), and deep soils (EUR 1.10 m−2). The land price is evidently highly correlated with its qualitative parameters. Using GIS technologies, the entire territory of Slovakia has been categorized by this means and a so-called basic map of agricultural soil market prices in Slovakia has been created.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/1744-5647Test

الوصول الحر: https://doaj.org/article/1a9323a9a7cb4139b47f10955ef82032Test

المؤلفون: Marco N. Samy, A.A. Ahmed, Ayman L. Fayed, Tamer Sorour, Mahmoud S. Hammad

المصدر: Ain Shams Engineering Journal, Vol 14, Iss 11, Pp 102552- (2023)

مصطلحات موضوعية: Rigid inclusions, Installation effect, Cavity expansion, Improved soil parameters, Engineering (General). Civil engineering (General), TA1-2040

الوصف: Rigid Inclusions have been increasingly used as a successful technique for improving soft clay deposits. This technique was first introduced by Menard in the 1990s and is known commercially as Controlled Modulus Columns (CMC’s) [1]. Unlike ordinary piles that transfer the entire external loads to the stiffer-bearing soil layers, rigid inclusions are mainly used to reduce the total and differential settlements by reducing the external loads transferred to the soft soil layers. One of the challenging tasks associated with this type of improvement is to reasonably estimate the ground deformations under different loading conditions [2]. Previous research focused mainly on getting reliable estimates of the ground movements and the straining actions acting on the rigid inclusions; however, the importance of the installation effect on the predicted deformations and straining actions was not clearly considered. The current paper aims to develop a realistic approach that takes into consideration the installation effect of rigid inclusions by utilizing the cavity expansion theory to estimate the improvement in the surrounding soil properties and accordingly enhance the accuracy of estimating the deformations and the straining actions. A case study of a zone loading test performed in New Mansoura City, Egypt, is analyzed utilizing the three-dimensional finite element method, taking into consideration the installation effect of the rigid inclusion by applying radial deformations to the soil layers and estimating the enhanced soil parameters particularly the deformation modulus and the over consolidation ratio. Results of the study showed that considering the improved soil parameters results in a better prediction of the settlement values of footings resting on the improved soil compared to the measured values. The average error in the settlement values is reduced from about 74 % to about 24 % after considering the enhancement in the soil parameters due to the installation effect.

وصف الملف: electronic resource

العلاقة: http://www.sciencedirect.com/science/article/pii/S2090447923004410Test; https://doaj.org/toc/2090-4479Test

الوصول الحر: https://doaj.org/article/58ea53c03c65436dbde2f0b8e535c052Test