silvicultural operation need to notice the plant species diversity in forest. to this study gomarlang district in marivan region, northern zagros forest was selected. selected 100 ha area because have similar physiography condition (north aspect and 1650 to 1800 m s.a.l. in study area 100 micro plots of 5m by 5 m (25 m2) including the species and the numbers of this species randomized-systemati...

The urban fringe which can be seen as a special form of regional ecosystems with a spatial structure gradually from urban to rural areas of transition, has strong heterogeneity and is typical of ecologically sensitive areas. The expansion of city caused wide attention to the landscape effect of the changes. With the help of GIS, we got landscape pattern changes before and after town planning of...

Abstract Ant communities play an important role in a teak agroecosystem. However, ant diversity is affected by urbanization. The purpose of this study was to determine the and composition ants plantations urban rural areas. This conducted July 2022 at three two regencies (Gowa Maros) one city (Makassar) South Sulawesi, Indonesia. Gowa Maros are located areas, while Makassar Ants were sampled us...

Spiders are recorded as indigenous natural enemies of tea mosquito bug (Helopeltis spp.), which is one of the major economically important pests of cashew. Consecutive survey for three years revealed occurrence of 117 species of spiders belonging to 18 families viz., Araneidae, Clubionidae, Corinnidae, Gnaphosidae, Hersilidae, Linyphiidae, Lycosidae, Miturgidae, Nephilidae, Oxyopidae, Pholcidae...

Based on a multiple linear regression model, random forest algorithm and generalized additive stand volume model was constructed to provide theoretical basis for sustainable management. A total of 224 fixed plots in the Jingouling farm, Wangqing County, Jilin Province, were used as data sources. Specifically, 157 training data, 77 test data. The effects structure variables, topography cutting d...

aim of this research was evaluated and compared of density (number tree per hectare), basal area and volume characteristics for estimation of tree species diversity in degraded forests. in order to, 73 hectares of kouhmian forests was inventory based on random systematic pattern with circular plots (10r and 26 plots). in each plot species, dbh and number of tree were measured and recorded. to e...

road construction is one of the effective factors for ecological changes which affects diversity and species composition in forest roads edges. this research was performed in kheirud forest to evaluate herbaceous diversity and tree regeneration establishment in different distances from road edge. for this purpose, we sampled herbaceous and tree species regeneration in 0,5,10,25, 50 and 100 m di...