in the last decade, frequency of late cold incidence has increased in the upland forest nurseries. the aim of present study was to reduce the damage caused by spring frost and to increase the efficiency of persian maple seedlings production in mountain nurseries. this study was conducted as split plot design with two main treatments and three replications in two consecutive years (2009-2010) in...

The Ferris Mountain Wilderness Study Area (WSA) is one of 42 WSAs in Wyoming managed by the Bureau of Land Management (BLM) as part of the National Landscape Conservation System (NLCS). To date, no WSA in Wyoming has been elevated to Wilderness Area status under the NLCS. Information about the characteristics that make a WSA eligible for Wilderness Area designation is needed during the evaluati...

The spatial variation of soil physical and chemical properties in Funiu Mountain was studied to provide references for identifying soil spatial variation mechanism in bordering land of China warm temperate zone and northern subtropical region. Using vertical gradient sampling and traditional statistics method, the soil samples at the altitude from 1640 m to 1870 m were collected to compare phys...

Experimentation with the selection silvicultural system in the Engelmann Spruce-Subalpine Fir (ESSF) Zone of east-central British Columbia began nearly ten years ago. The initial impetus for partial cutting came from concerns about specific nontimber resources, such as scenic values, water quality for domestic use, and habitat for mountain caribou (Rangifer tarandus). A set of first-generation ...

iran has mountainous landscapes and half of its surface is occupied by highlands. moreover, iran is an arid country and deserts are located at lower altitudes. most metropolitan areas are positioned in mid-altitudes between mountain and desert. cities grow upwardly toward the highlands under pressures of urbanization and desertification. foothill ecotones are a zone between upland mountains and...

During the last century, the socio-economic conditions of European mountain areas have completely changed, particularly in locations far from industrial areas. As a consequence of the migration of workers towards densely inhabited valleys and close-to-mountains lowland areas offering better income opportunities, the population of many small mountain villages has been declining and ageing. The t...

The diurnal variability of monsoon precipitation and associated circulation features, e.g. land/sea breezes, mountain/valley breezes, and low-level jets, in the monsoon regions of the world are reviewed, with a particular focus on the Asian monsoon. The dominant pattern of diurnal variability is a maximum in rainfall over land during the afternoon/evening in response to solar heating of the sur...