Changes in Soil's Chemical and Biochemical Properties Induced by Road Geometry in the Hyrcanian Temperate Forests

Forest roads play an important role in providing access to forest resources. However, they can significantly impact the adjacent soil and vegetation. This study aimed to evaluate the effects of road geometry (RG) on the chemical and biochemical properties of adjacent soils to assist in environmental...

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Veröffentlicht in:Forests 2021-12, Vol.12 (12), p.1805, Article 1805
Hauptverfasser: Rahbarisisakht, Saeid, Moayeri, Mohammad Hadi, Hayati, Elyas, Sadeghi, Seyed Mohammad Moein, Kepfer-Rojas, Sebastian, Pahlavani, Mohammad Hadi, Kappel Schmidt, Inger, Borz, Stelian Alexandru
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container_title Forests
container_volume 12
creator Rahbarisisakht, Saeid
Moayeri, Mohammad Hadi
Hayati, Elyas
Sadeghi, Seyed Mohammad Moein
Kepfer-Rojas, Sebastian
Pahlavani, Mohammad Hadi
Kappel Schmidt, Inger
Borz, Stelian Alexandru
description Forest roads play an important role in providing access to forest resources. However, they can significantly impact the adjacent soil and vegetation. This study aimed to evaluate the effects of road geometry (RG) on the chemical and biochemical properties of adjacent soils to assist in environmentally friendly forest road planning in mountainous areas. Litter layer, canopy cover, soil organic carbon (SOC) stock, total nitrogen (TN), the activity of dehydrogenase (DHA), and urease (UA) enzymes at a 0-20 cm soil depth were measured by sampling at various distances from the road edge to 100 m into the forest interior. The measurements were done for three road geometries (RG), namely straight, curved, and bent roads, to ensure data heterogeneity and to reflect the main geometric features of the forest roads. Analysis of variance (ANOVA) showed that the effects of RG on the measured variables were statistically significant. Spearman's correlation test clearly showed a strong positive correlation between environmental conditions, SOC, TN, DHA, and UA for given RGs. Based on piecewise linear regression analysis, the down slope direction of the straight and the inside direction of bent roads accounted for the lowest and highest ranges of ecological effects, respectively. The results of this study contribute to our understanding of the environmental effects brought about by road geometry, which can be important for forest road managers when applying the best management practices.
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subjects Best management practices
biogeochemistry
Carbon
Decomposition
Ecological effects
Environmental conditions
Environmental effects
enzyme
Enzymes
Forest management
Forest resources
forest road
Forest soils
Forestry
Forests
Geometry
Heterogeneity
Infrastructure
Laboratories
Life Sciences & Biomedicine
Mountainous areas
Nitrogen
Organic carbon
Organic soils
Regression analysis
Roads
Roads & highways
Science & Technology
soil
Soil chemistry
Soil depth
Soil layers
Soil properties
Soils
Statistical analysis
Temperate forests
total nitrogen
Urease
Variance analysis
Vegetation
title Changes in Soil's Chemical and Biochemical Properties Induced by Road Geometry in the Hyrcanian Temperate Forests
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