نتایج جستجو برای: coppice system
تعداد نتایج: 2231600 فیلتر نتایج به سال:
Chestnut (Castanea sativa Mill.) coppice is a man-made forest type that has been managed for centuries in short rotations to rapidly produce woody biomass. These forests, which nowadays cover significant areas within Europe, experience a general neglect and are subsequently being abandoned. Most of them are now over-aged, very dense, and highly monotone. Little is known about their development....
Spatial distributions of leaf characteristics relevant to photosynthesis were compared within high-density coppice canopies of Populus spp. of contrasting genetic origin. We studied three clones representative of the range in growth potential, leaf morphology, coppice and canopy structure: Clone Hoogvorst (Hoo) (Populus trichocarpa Torr. & Gray x Populus deltoides Bartr. & Marsh), Clone Fritzi ...
Semi-arid tree covers, in both high and coppice growth forms, play an essential role protecting water soil resources provides multiple ecosystem services across fragile ecosystems. Thus, they require continuous inventories. Quantification of forest structure these covers important measures for their management biodiversity conservation. We present a framework, based on consumer-grade UAV photog...
the application of e-learning systems - as one of the solutions to the issue of anywhere and anytime learning – is increasingly spreading in the area of education. content management - one of the most important parts of any e-learning system- is in the concern of tutors and teachers through which they can obtain means and paths to achieve the goals of the course and learning objectives. e-learn...
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