Effects of Vegetation Type on Soil Shear Strength in Fengyang Mountain Nature Reserve, China

Liu, Xin; Cheng, Xuefei; Wang, Nan; Meng, Miaojing; Jia, Zhaohui; Wang, Jinping; Ma, Shilin; Tang, Yingzhou; Li, Chong; Zhai, Lu; Zhang, Bo; Zhang, Jinchi

doi:10.3390/f12040490

Cited by 14 publications

(7 citation statements)

References 69 publications

(73 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Eucalyptus forests produce a signifcant amount of litter over time and decompose and accumulate organic matter in the forest foor results in increased clay content in the topsoil [70]. Te roots of Eucalyptus trees are extensive and can penetrate and breakdown rocks and soil particles contributing to the accumulation of clay [75]. Additionally, the roots of Eucalyptus trees release organic acids that enhance the weathering of minerals and the release of clay particles [76].…”

Section: Te Efect Of Land-use Change On the Physical Properties Of Th...mentioning

confidence: 99%

Effect of Eucalyptus globulus Plantations on Soil Physicochemical Properties in the Upper Blue Nile, Ethiopia

Yimam,

Mekuriaw,

Assefa

et al. 2024

Applied and Environmental Soil Science

View full text Add to dashboard Cite

In recent years, there has been a substantial conversion of croplands and grasslands to short rotation Eucalyptus globulus plantations in the northern highlands of Ethiopia. This has raised concerns among researchers, policymakers, and environmentalists regarding potential adverse effects on soil fertility. To address these concerns, a study was conducted to evaluate the impact of Eucalyptus globulus plantations on selected soil physicochemical properties in the region. The study involved four land-use types, comprising two age groups of Eucalyptus globulus plantations (4-year-old and 9-year-old), as well as areas designated for grasslands and croplands. Soil sampling was carried out in 10 m × 10 m subplots within each experimental plot, and standard methods were employed for soil analysis. The soil laboratory results were statistically analyzed using Two-way ANOVA and Pearson’s correlation coefficients in R software version 4.1.0. The findings revealed significant variations (p<0.05) in soil bulk density, soil organic carbon, and soil pH between the 4-year-old and 9-year-old Eucalyptus globulus plantations and the grasslands. A notable difference (p<0.05) in exchangeable acidity was observed between the 4-year-old and 9-year-old E. globulus plantations, with the latter exhibiting the highest mean exchangeable acidity (6.20 ± 0.76). However, no significant differences (p<0.05) were observed between the Eucalyptus plantations and the grasslands in available phosphorus (Av.P), exchangeable calcium (Ca2+), sodium (Na+), and magnesium (Mg2+) concentrations, as well as cation exchange capacity (CEC). The study results has, therefore, implied that Eucalyptus globulus plantations induced changes in specific soil properties with varying stand ages in the study area. Nonetheless, it was emphasized that further long-term research is necessary to comprehend the effects of these plantations on soil properties.

show abstract

Section: Te Efect Of Land-use Change On the Physical Properties Of Th...mentioning

confidence: 99%

Effect of Eucalyptus globulus Plantations on Soil Physicochemical Properties in the Upper Blue Nile, Ethiopia

Yimam,

Mekuriaw,

Assefa

et al. 2024

Applied and Environmental Soil Science

View full text Add to dashboard Cite

show abstract

“…The coniferous and broad-leaved mixed forest, broad-leaved forest, and coniferous forest are the main vegetation types in subtropical areas [24][25][26]. Selecting the above three typical subtropical vegetation types and setting up a control experiment with non-forest land is aimed at comprehensively understanding the role of different types of vegetation in oxygen production, which helps better protect and utilize forest resources.…”

Section: Plot Settingmentioning

confidence: 99%

Temporal Dynamics and Influencing Mechanism of Air Oxygen Content in Different Vegetation Types

Zhu,

Li,

et al. 2024

Forests

View full text Add to dashboard Cite

Air oxygen content, an essential index for measuring air quality, is affected by vegetation and the environment in the forest. However, the scientific understanding of the influential mechanism of air oxygen content in different vegetation types is still not clear. Focusing on four different vegetation types: broad-leaved forest, coniferous forest, coniferous and broad-leaved mixed forest, and non-forest land within Shimen National Forest Park, China, the temporal dynamics of air oxygen content and its relationship with four environmental factors (temperature, relative humidity, wind speed, and negative air ion concentration) in different vegetation types were explored based on path analysis and decision analysis. The results showed that there was a noteworthy impact of vegetation types on air oxygen content, with coniferous and broad-leaved mixed forest (21.33 ± 0.42%) presenting the highest levels. The air oxygen content indicated a fundamentally consistent temporal pattern across different vegetation types, with the highest diurnal variation occurring at noon. It reached its peak in August and hit its nadir in December, with summer > spring > autumn > winter. In broad-leaved forest, the air oxygen content was determined by temperature, wind speed, negative air ion concentration, and relative humidity; in both coniferous forest and coniferous and broad-leaved mixed forest, the air oxygen content was affected by temperature, wind speed, and relative humidity; in non-forest land, the air oxygen content was influenced by temperature and wind speed. Generally, temperature was the dominant factor affecting air oxygen content in different vegetation types, and its positive impact tremendously exceeded other environmental factors. Wind speed had a positive impact on air oxygen content in three forest communities but a negative effect on non-forest land. Relative humidity acted as a limiting factor for air oxygen content within three forest communities. Negative air ion concentration showed a significant positive correlation on air oxygen content in broad-leaved forest. Therefore, when planning urban forests to improve air quality and construct forest oxygen bars, it is recommended that the tree species composition should be given priority to the coniferous and broad-leaved mixed pattern. Meanwhile, make sure the understory space is properly laid out so that the forest microclimates are conducive to the release of oxygen by plants through photosynthesis.

show abstract

“…In order to be relevant for the evaluation of the risk of soil distortion from field traffic, shear strength (τ) should reflect field conditions (Schjønning 2021). In general, with increased water content, the cohesion and internal friction angle of soil typically decrease nonlinearly, which is due to the formation of a water film between soil particles with higher water content, thus the internal friction angle and cohesion are reduced (Liu et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Effect of forwarder multipassing on forest soil parameters changes

Pandur¹,

Kopseak²,

Šušnjar³

et al. 2022

iForest

View full text Add to dashboard Cite

In the lowland part of Croatia, heavy machinery such as forwarders is mainly used for the purpose of extracting wood from even-aged forest stands. According to the forest management plan, forwarders are used intensively in the winter period when the soil is mostly saturated with water and when their activity can cause significant damage to the soil. The aim of this study was to determine changes in soil characteristics as a consequence of the repeated passage of a loaded 8-wheel forwarder on silty clay loam type of soil. The research was conducted in an area where the forwarder usually works and in a way that did not significantly disrupt his normal workflow. The results indicate that during the study period the soil had a good bearing capacity and that the observed changes in soil characteristics (bulk density, total soil porosity, soil moisture, particle density, soil water retention capacity etc.) occurred as a result of breaking structural soil aggregates after soil compaction by multiple passes. Characteristic points (T) of equalized penetration curves indicate the compaction of the soil surface layer. Cone penetration index (CI) values did notshow a proportional increase as the number of forwarder passes increased, although significant differences in their values with respect to the number of passes were found. Shear strength (τ) did not significantly increase with increasing the number of passes, but a statistically significant difference in the measured values was detected at the soil surface, which was not observed at a depth of 15 cm. Exceeding the rut depth limit of 10 cm occurred only after the 20 th pass. Our results indicate that the soil at the harvesting site had a good bearing capacity during the study period.

show abstract

Effects of Vegetation Type on Soil Shear Strength in Fengyang Mountain Nature Reserve, China

Cited by 14 publications

References 69 publications

Effect of Eucalyptus globulus Plantations on Soil Physicochemical Properties in the Upper Blue Nile, Ethiopia

Effect of Eucalyptus globulus Plantations on Soil Physicochemical Properties in the Upper Blue Nile, Ethiopia

Temporal Dynamics and Influencing Mechanism of Air Oxygen Content in Different Vegetation Types

Effect of forwarder multipassing on forest soil parameters changes

Contact Info

Product

Resources

About