the main purpose of this study was to investigate the major barriers to application of good agricultural practices (gaps) technologies in sustainability of livestock by ranchers of meshkinshahr. a sample of 120 farmers was selected by using proportional random sampling method. data were collected by means of a questionnaire. validity of questionnaire was determined through agricultural jihad ex...

Canopy gaps play an essential role in continuous cover forests, as they have a strong effect on regeneration dynamics and species composition. However, canopy gaps have been widely neglected in current monitoring and planning practices, which might be caused by the fact that mapping of canopy gaps from the ground is labour-intensive, tedious, and error prone. An approach to automated canopy gap...