نتایج جستجو برای: change detection of urban landscape requires multi
تعداد نتایج: 21349278 فیلتر نتایج به سال:
This paper presents an approach to automated identification of slum area change patterns in Hyderabad, India, using multi-year and multi-sensor very high resolution satellite imagery. It relies upon a lacunarity-based slum detection algorithm, combined with Cannyand LSD-based imagery pre-processing routines. This method outputs plausible and spatially explicit slum locations for the whole urban...
identification of rapid degradation of ecological resources requires effective environmental monitoring including ecological integrity assessment .our first aim is to analyze ecological integrity in a landscape context while developing a method to assess integrity in spite of a dearth of historical data. we used a spatial-temporal reference framework for land cover maps for assessing ecologica...
The urban fringe which can be seen as a special form of regional ecosystems with a spatial structure gradually from urban to rural areas of transition, has strong heterogeneity and is typical of ecologically sensitive areas. The expansion of city caused wide attention to the landscape effect of the changes. With the help of GIS, we got landscape pattern changes before and after town planning of...
در این پژوهش به منظور بررسی تغییرات دمای سطح زمین در شهرستان ارومیه، ابتدا تصاویر دمای سطح زمین (lst) ماه آگوست سالهای 1998 و 2013 استخراج گردید. سپس تصاویر پوشش گیاهی با اعمال شاخص ndvi برای هر دو سال تهیه گردید. جهت تحلیل و بررسی تغییرات زمانی و مکانی دمای سطح زمین و بررسی ارتباط آن با پوشش گیاهی ، روش های change detection به کار گرفته شد. روش های مورد استفاده عبارتند از تهیه تصاویر تفاضل و ط...
Urbanization is developing unprecedentedly on a global scale. One of the chief repercussions of urbanization, caused by man-made alterations in land-use/land-cover (LULC), is the formation of urban heat islands. Albeit, differences among landscape structures and its accompanied effects on the environment are mostly neglected. Accordingly, the main objective of this study is to survey the variou...
The semi-arid grasslands in Inner Mongolia (IM) are under increasing stress owing to climate change and rapid socio-economic development in the recent past. We investigated changes in land cover/land use and landscape structure between 1992 and 2004 through the analysis of AVHRR and MODIS derived land cover data. The scale of analysis included the regional level (i.e. the whole of IM) as well a...
this study investigates the application of landscape ecology in planning and design of urban ecological systems. the ecological approach to landscape planning and the concepts of designing and implementing ecological systems have gained increasing attention in the last two decades. however, the ecological systems of urban environment need more research to consider built and natural patches and ...
The interactions between urban development and ecological processes are extraordinarily complex. Urban development evolves over time and space as the outcome of microscopic interactions of individual choices and actions taken by multiple agents. These decisions affect ecosystem structures and functions through the conversion of land, fragmentation of natural habitat use, disruption of hydrologi...
Due to dramatic increase in urban population and allied urban problems it is essential to have urban planning and management at local level. For this urban planners and decision-makers need efficient tools to quantify, evaluate and compare the impact of alternative plans and designs so that more informed choices can be made. Gulbarga one of the developing city of Karnataka, it is important to k...
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