کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
93986 160242 2016 11 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Assessment of solar radiation reduction from urban forests on buildings along highway corridors in Sydney
ترجمه فارسی عنوان
ارزیابی کاهش تابش خورشید از جنگل های شهری در ساختمان ها در کنار کریدورهای بزرگراه در سیدنی
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تولید محتوا
با 10 درصد تخفیف ویژه دانشیاری
کلمات کلیدی
LiDAR؛ تجزیه و تحلیل فراطیفی؛ مدل تابش خورشیدی؛ پروفایل تابش فصلی؛ ابعاد ساختمان؛ ویژگی های درخت
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک جنگلداری
چکیده انگلیسی


• Shading impacts of urban forests on building roofs are assessed along two highways.
• Two remote sensing technologies are integrated for data analysis.
• Trees around buildings result in substantial solar radiation reductions and energy savings.
• Radiation reductions correlate to tree height and canopy coverage, so large trees more beneficial.
• Remote sensing data can be effectively used for urban forest management.

Urban forests play a critical role in mitigating heat island effects and in modifying local microclimates by intercepting solar radiation and shading heat-absorbing structural materials. Solar radiation is the prime determinant of how much energy urban surfaces absorb and of temperature distribution patterns in urban areas. Understanding the impacts of urban trees on solar radiation received by buildings is an important way to assess tree shading and potential energy conservation. In this study two remote sensing technologies have been integrated, to estimate solar radiation on building roofs along two major infrastructure routes in Sydney. In particular, the relationship between the radiation received by the roofs and the surrounding tree features has been investigated. The two chosen sources of remotely sensed data are light detection and ranging (LiDAR), and airborne hyperspectral imaging. Integrating these data sets provides a means to build digital surface models (DSMs) which only include trees and permits a distinction between evergreen and deciduous species. Global solar radiation profiles of both corridors have been estimated. Then, the direct and diffuse radiation received by building roofs are modelled by incorporating the LiDAR DSM, at hourly intervals on spring/autumn equinox and summer/winter solstice dates. The very high summer radiation in comparison with winter levels is demonstrated and, by correlating reductions in solar radiation with different tree and building dimensions, this paper shows that tree canopy height is most strongly correlated to solar radiation across the whole study area. The results also demonstrate benefits of more extensive use of deciduous species in industrialised or commercial areas. For landscape planners in Sydney, the importance of having and conserving taller trees for solar radiation reduction is clear.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Urban Forestry & Urban Greening - Volume 15, 2016, Pages 225–235
نویسندگان
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