Little is known about tree height and height growth (as annual shoot elongation of the apical part of vertical stems) of coniferous trees growing at various altitudes on the Tibetan Plateau, which provides a high-elevation natural platform for assessing tree growth performance in relation to future climate change. We here investigated the variation of maximum tree height and annual height incre...

this study was aimed to investigate the effect of altitude on fiber characteristics, chemical composition and kraft yield pulp of brutian pine. wood samples were collected from different altitudes as 450, 750 and 960m of arabdagh plantation, located in kalaleh region in the northeast of golestan province. three healthy sample trees of brutian pine were cut from each altitude. maceration of earl...

hypoxia and hypocapnia can cause broncho-constriction in human subjects, and this could have a bearing on performance at high altitude. the object of this study was to examine how pulmonary ventilatory functions during high-altitude trekking. this study is a cohort study on spirometric parameters at different altitudes. fifty six healthy male volunteers from a university student population were...

The trends in wind speed at a typical wind turbine hub height (80 m) are analyzed using the North American Regional Reanalysis (NARR) dataset for 1979–2009. A method, assuming the wind profile in the lower boundary layer as power-law functions of altitude, is developed to invert the power exponent (in the power-law equation) from theNARRdata and to compute the following variables at 80 m that a...