the assessment of the quantitative and qualitative changes, the result of the impacts imposed by natural factors, and human interventions during specific sampling periods has a substantial influence on nature, management method and tending operation of every region’s forests. the present research was carried out in golestan province forests (iran) over an 11- year period and the obtained statis...

In this chapter, we present a survey of algorithms for dense subgraph discovery. The problem of dense subgraph discovery is closely related to clustering though the two problems also have a number of differences. For example, the problem of clustering is largely concerned with that of finding a fixed partition in the data, whereas the problem of dense subgraph discovery defines these dense comp...

Growth is a component of forest dynamics that encompasses changes in species composition, interactions between species, and stand structure. We evaluated the effect presence lianas, crown shape, light exposure on periodic annual increment trees (PAI) two phytophysiognomies: ombrophilous dense open with lianas. This study was conducted eastern Brazilian Amazon 13 permanent monitoring plots 50 m ...

Deforestation and land degradation remain two major economic environmental threats in Côte d’Ivoire. This study assessed use cover (LULC) change farmers’ perceptions of the drivers effects deforestation south-western We used remotely sensed data to determine LULC trends, a household survey collect degradation. A total 411 households were interviewed using structured questionnaire focus group di...

conclusions the crude extract of streptomyces sp. acs52 had high antibacterial activity against a wide spectrum of bacteria and could be of interest due to its features such as ability to grow at low temperatures and alkaline ph levels. results streptomyces sp. acs52 is a cold-resistant alkalophilic bacterium strain with antibacterial activity against a broad spectrum of pathogenic bacteria. th...

Accurate and efficient individual tree species (ITS) classification is the basis of fine forest resource management. It a challenge to classify in dense forests using remote sensing imagery. In order solve this problem, new ITS method was proposed study, which hierarchical convolutional neural network (H-CNN) model multi-temporal high-resolution Google Earth images were employed. an experiment ...

Canopy disturbance explains liana abundance and distribution within tropical forests thus may also explain the widespread pattern of increasing abundance; however, this hypothesis remains untested. We used a 10-year study (2007–2017) 117,100 rooted lianas in an old-growth Panamanian forest to test whether local canopy abundance. found that density increased 29.2% basal area 12.5%. The vast majo...

Riparian forests are ecotones that differ from the surrounding landscapes, delineating transition terrestrial ecosystems into aquatic ones. forest management has been recognized as a possible method for promoting several ecological functions. In order to develop sustainable and resilient relationship between river riparian society, it is necessary analyze sociocultural dimension of zones. The a...

The purpose of this paper is twofold, considering first the generalization a multichannel speckle filter in order to handle temporal stacks polarimetric SLC SAR data, and secondly development an ad hoc performance indicator based on Polarimetric Orientation Angle (POA) better estimate resulting reduction than standard Equivalent Number Looks (ENL) over densely vegetated regions, like tropical f...