Effect of land-use changes on chemical and physical properties of soil in western Iran (Zagros oak forests)

Samani, Kyumars Mohmmadi; Pordel, Narges; Hosseini, Vahid; Shakeri, Zahed

doi:10.1007/s11676-018-0799-y

Cited by 17 publications

(4 citation statements)

References 54 publications

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“…This result was also supported by the significant relationships between soil BD and C and N concentrations, which were found in other studies [52,57]. The highest EC was determined in OP, which was in line with the findings of Samani et al [58], probably owing to the decomposition of litter and chemical fertilizer that produced amounts of soluble ions in soils and raised the EC level in the OP [58]. This also explained the significantly higher soil CEC in OP.…”

Section: Selected Physicochemical Properties and Their Linkages With ...supporting

confidence: 89%

Characteristics of Soil C, N, and P Stoichiometry as Affected by Land Use and Slope Position in the Three Gorges Reservoir Area, Southwest China

et al. 2021

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Land use change and slope position are commonly identified as the key factors affecting the soil organic carbon (C), total nitrogen (N), and total phosphorus (P) traits in distinct ecological scales. However, the directions of these effects are still unclear in some fragile terrestrial ecosystems. This study aimed to determine the characteristics of soil C, N, and P concentrations and stoichiometry as affected by different land uses and slope positions in a representative purple soil hillslope in Three Gorges Reservoir Area (TGRA), China, which is experiencing severe soil erosion and non-point source pollution. A total of 108 soil samples were collected from secondary forest, orchard plantation, and cropland on the upper, middle, and lower slopes, respectively. Soil C, N, and P concentrations and their stoichiometric ratios were determined. The results showed that soil C concentration was not affected by land use, while soil N and P concentrations were both the highest in orchard plantation rather than in secondary forest and cropland, resulting in the lowest C:N, C:P, and N:P ratios in the orchard plantation. Soil C and N concentrations synchronously decreased from upper slope to the lower slope, and soil P concentration was not markedly different among slope positions. This also caused the insignificant difference in soil C:N ratio and the remarkably lowest C:P and N:P ratios on the lower slope. There were significant interactive effects of land use and slope position on the study soil variables except soil P concentration. Our results highlight the effects of land use and slope position on soil C, N, and P traits and point to the decoupling of linkages between soil P and soil C as well as N due to the severe soil erosion and overuse of fertilization in the TGRA.

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Section: Selected Physicochemical Properties and Their Linkages With ...supporting

confidence: 89%

Characteristics of Soil C, N, and P Stoichiometry as Affected by Land Use and Slope Position in the Three Gorges Reservoir Area, Southwest China

et al. 2021

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“…Secondly, the effects of different treatments on soil physicochemical properties and the relative abundance of soil CO 2 -fixing bacteria were statistically analyzed by a one-way ANOVA. The means of treatments were compared using Duncan's multiple range tests (p < 0.05) [32]. The data were described by average ± standard error, in which different lowercase or uppercase letters showed a significant difference between different groups (p < 0.05).…”

Section: Discussionmentioning

confidence: 99%

Effects of Canopy Damage and Litterfall Input on CO2-Fixing Bacterial Communities

Yu,

Li,

Liang

et al. 2023

Forests

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Extreme weather events often cause canopy disturbance and litter deposition. To study the CO2-fixing bacterial response to forest damage, we simulated the canopy damage caused by extreme weather with four different treatments: control (CN), canopy trimming + removal of branches and leaves debris (TR), canopy trimming + retaining of branches and leaves debris (TD), and undamaged + transplantation of branches and leaves debris (UD). We used the cbbL gene, which encodes ribulose-1,5-biphosphate carboxylase/oxygenase (RubisCO), for Miseq sequencing to analyze the dynamics of community composition of soil CO2-fixing bacteria for five consecutive years after canopy damage. Double treatments of canopy damage and litterfall inputs (TD) facilitate forest restoration better than single treatments (TR or UD). Most soil CO2-fixing bacteria are facultative autotrophic bacteria, and Nitrosospira, Streptomyces, and Saccharomonospora are the main carbon-fixing microorganisms, which have significant differences during the restoration of damaged forest canopy. The forest ecosystem restoration after canopy damage lasted 4–5 years. Rainfall and pH showed a significant negative correlation with most soil CO2-fixing bacteria communities. This study provides a theoretical basis for improving the carbon sequestration capacity of forest soil CO2-fixing bacteria after extreme weather and also provides guidance for forest ecosystem management.

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“…Therefore, several studies have been conducted on this topic to show the effect of this practice on soil properties, some of which have focused on changes in the surface horizon, while others have studied these changes at various depths. The studies done by Saha and Kukal (2015) and Mohmmadi et al (2020) on two 0-15 and 15-30 cm horizons showed that conversion of forest soil to agricultural land increased pH and bulk density, while decreasing overall organic matter, electrical conductivity, macroporosity, and water retention in both horizons. Contrariwise, according to Adugna and Abegaz (2016) and Aneesh et al (2020), this conversion increased bulk density, total porosity, and electrical conductivity, while decreasing pH and organic matter content.…”

Section: Introductionmentioning

confidence: 99%

Changes in soil physico-chemical and biological quality after two decades of forest soil conversion to agricultural land

Allam¹,

Zouidi

Kefifa³

et al. 2023

Zemdirbyste-Agriculture

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The development of agriculture to the detriment of the forest is one of the strongest pressures, essentially anthropogenic. The particularity of this study was that the traditional agricultural practice used was low intensity agriculture (fallow period) since the first conversion. The experiment was conducted in the Keroua forest, Saïda Province, north-western Algeria. Soil samples from two experimental areas were collected at depths ranging from 0 to 10 cm. The findings came from the statistical analysis of the data, some of which revealed the sensitivity of this ecosystem. The conversion of the forest soil to agricultural land increased the alkalinity of the soil (pH H2O increased by 0.16 units), and the acidification of the soil with a significant decrease in pH KCl values (by 0.24 units). Moreover, the organic matter content in the converted soil decreased by more than 50%, while the physical characteristics changed slightly with a decrease in moisture content and water holding capacity and an increase in bulk and real density. Meanwhile, the permeability and total porosity did not change in the two areas. For biological properties, basal respiration and microbial biomass decreased by more than 45% in the converted soil compared to the forest soil.

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Effect of land-use changes on chemical and physical properties of soil in western Iran (Zagros oak forests)

Cited by 17 publications

References 54 publications

Characteristics of Soil C, N, and P Stoichiometry as Affected by Land Use and Slope Position in the Three Gorges Reservoir Area, Southwest China

Characteristics of Soil C, N, and P Stoichiometry as Affected by Land Use and Slope Position in the Three Gorges Reservoir Area, Southwest China

Effects of Canopy Damage and Litterfall Input on CO2-Fixing Bacterial Communities

Changes in soil physico-chemical and biological quality after two decades of forest soil conversion to agricultural land

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