the aim of study was to evaluate qualitative and quantitative characteristics of old trees in pattom and namkhaneh districts in the nowshahr, northern iran. the trees quantitative characteristics of dbh, total height, slenderness coefficient, trunk height, crown length, buttress height, and canopy cover area and qualitative characteristics of crown and trunk, i.e., health, vitality, and concurr...

land-use change has strong effects on ecosystem properties, especially on soil carbon storage and it increased global atmospheric co2. degradation and loss of area and quality of hyrcanian forests are the biggest problems in these forests. one of the most important solutions to taking care of these problems is increasing plantations in these areas. therefore, investigation of the effects of dif...

When forest fires occur, highly complex effects on soil properties and hydrological processes are activated. However, in countries such as Iran, these consequences not widely studied there is a lack of studies. Therefore, the main aim this study was to investigate wildfire quality characteristics representative area located Hyrcanian forests, specifically, Zarrinabad watershed Sari. For purpose...

Forest canopy cover (FCC) is an important ecological parameter of forest ecosystems, and correlated with characteristics, including plant growth, regeneration, biodiversity, light regimes, hydrological properties. Here, we present approach combining Sentinel-2 data, high-resolution aerial images, machine learning (ML) algorithms to model FCC in the Hyrcanian mixed temperate forest, Northern Ira...

Saproxylic beetles play a vital role in conservation as indicators of the status unmanaged forests. In light concern regarding adverse impact anthropogenic pressure on biodiversity, an essential step forest conserva-tion strategy is identification saproxylic beetles. The Hyrcanian forests are unique remnant natural broadleaf temperate forests, with evolutionary history that can be traced to Ter...

One of the most important issues indicating quality and quantity forest ecosystems is distribution natural disturbances resulting in canopy gaps (CGs). The present study was conducted one Hyrcanian beech forests northern Iran summer 2018. gap areas were classified into small (< 200 m2), medium (200‒500 m2) large (500–1 000 on basis full inventory. univariate Ripley’s L-function used for introdu...