Effects of forest roads on vegetation biodiversity and soil characteristics in Hyrcanian forests

As one of the main components of forest operations and sustainable management, forest roads affect the vegetation communities around the road. In this study, the effects of the edge of forest roads were investigated to understand the changes caused by the network of forest roads on the Hyrcanian forest ecosystem in northern Iran. In order to investigate the impact of forest roads on the biodiversity of herbaceous species, tree regeneration and lichen. Sampling was used at different distances from the road in two control and harvested areas. The effects of roads on vegetation diversity in relation to soil characteristics were also investigated. The results showed that harvesting caused the destruction and reduction of tree regeneration, herbaceous and lichen, but the physical and chemical properties of the soil were not affected. The distance from the road has affected the diversity and richness of herbaceous and lichen, tree regenaration and all physical and chemical characteristics of ..., In this study, the effects of the edge of forest roads were investigated to understand the changes caused by the network of forest roads on the Hyrcanian forest ecosystem in northern Iran. Field and laboratory data have been used for statistics and collection of vegetation and soil data. A 120-meter buffer was created on the side of the excavation shoulder for inventory and collection of vegetation and soil data. Then this buffer was divided into distances D0 (side of the road), D15 (15 meters from the roadside), D45 (45 meters from the roadside), D75 (75 meters from the road side), and D105 (105 meters from the roadside). The length of the sampling line to the end of the selected road was determined on the map. Sampling lines were located with a width distance of 50 meters in the 2 harvesting and control forests. Then, perpendicular to the road, square macro-plots with an area of 400 m2 were located on these roads. Inside each macroplot, 4 rectangular microplots with an area of 4 m2 we..., , # Effects of forest roads on vegetation biodiversity and soil characteristics in Hyrcanian forests

In this study, the ecological effects of the road on some physical and chemical properties of the soil, and the biodiversity of plants (herbaceous cover, tree regeneration and lichen) with Shannon-Wiener diversity index, Margalf's richness index and uniformity index Pielou's evenness index was investigated in Hyrcanian forests in northern Iran.
The dataset file includes the following:

### 1- Information on the physical and chemical properties of the soil (data soil file)

The parameters include soil moisture percentage (%SM), bulk density (BD) (g/cm3), total porosity (TP%), Soil penetration resistance (PR) (Megapascal), Soil acidity (pH) (H2O 1:2.5), C%, N%, P: soil phosphorus (mg kg-1), K: potassium (mg kg-1), Ca: calcium (mg kg-1) and Mg: magnesium (mg kg-1) was taken. This information was obtained from sampling in plots along the line of transects at different distances from the road ...