نتایج جستجو برای: windbreaks
تعداد نتایج: 156 فیلتر نتایج به سال:
EC1763 How Windbreaks Work EC1764 Windbreak Establishment EC1766 Windbreaks for Livestock Operations EC1767 Windbreaks for Rural Living EC1768 Windbreak Management EC1770 Windbreak for Snow Management EC1771 Windbreaks and Wildlife EC1772 Windbreaks in Sustainable Agricultural Systems EC1777 Windbreak Renovation EC1778 Field Windbreaks EC1779 Windbreaks for Fruit and Vegetable Crops University ...
Windbreaks often form networks of forest habitats that improve connectivity and thus conserve biodiversity, but little is known of such effects in the tropics. We determined bird species richness and community composition in windbreaks composed of remnant native vegetation amongst tea plantations (natural windbreaks), and compared it with the surrounding primary forests. Fifty-one, ten-minute p...
Windbreaks are an important ecological resource across the large expanse of agricultural land in the central United States and are often planted in straight-line or L-shaped configurations to serve specific functions. As high-resolution (i.e., <5 m) land cover datasets become more available for these areas, semior fully-automated methods for distinguishing windbreaks from other patches of trees...
Densities of an herbivorous pest may be impacted by landscape and orchard architecture. We present two orchard experiments where the densities of the Asian citrus psyllid (Diaphorina citri) were compared depending on: (1) the presence or absence of a windbreak and (2) if the orchards consisted of a solid set re-planting or an orchard with a mixture of mature and reset-replacement trees. Psyllid...
Wind-flow pattern over embankments involves an overexposure of the rolling stock travelling on them to wind loads. Windbreaks are a common solution for changing the flow characteristic in order to decrease unwanted effects induced by the presence of cross-wind. The shelter effectiveness of a set of windbreaks placed over a railway twin-track embankment is experimentally analysed. A set of two-d...
With the extensive adoption of transgenic crops, an understanding of transgene flow is essential to manage gene flow to non-GM crops. Thus, a flexible and accurate numerical model is required to assess gene flow through pollen dispersal. A three-dimensional atmospheric model combined with a diffusion transport model would be a useful tool for predicting pollen dispersal since it would be flexib...
Building upon a recent study that showed windbreaks to be effective in increasing the power output of a wind turbine, the potential of windbreaks in a large wind farm is explored using simplified formulations. A top-down boundary layer approach is combined with methods of estimating both the roughness effects of windbreaks and the induced inviscid speed-up for nearby turbines to investigate pow...
The physiographic region of the Central Russian Upland, situated in the Central part of Eastern Europe, is characterized by very fertile grassland soils—Chernozems (Mollisols in the USDA taxonomy). However, over the last several centuries this region has experienced intense land-use conversion. The most widespread and significant land-use change is the extensive cultivation of these soils. As a...
The flow speed-up generated by windbreaks can be used to increase the power production of wind turbines. However, due increased drag imposed windbreaks, their use in large turbine arrays has been questioned. We eddy simulations show that farms. A crucial finding is a farm should much lower than for single case. In fact, optimal windbreak an isolated reduce performance. height namely depends on ...
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