نتایج جستجو برای: landscape metrics
تعداد نتایج: 132905 فیلتر نتایج به سال:
بررسی تغییرات پوشش اراضی استان چهارمحال و بختیاری با استفاده از متریکهای سیمای سرزمین (2015-1994)
Due to the importance of accessibility to updated and timely information regarding land cover changes, it is necessary for researchers and managers to assess such provincial level changes to help the planning process and prevent the damages caused in various regions. To this end, the Chaharmahal and Bakhtiari Province land cover changes from 2015-1994 were developed in six main classes using th...
Understanding the relationship between landscape pattern and ecological processes constitutes the foundation of landscape ecology. Generally, a set of landscape metrics is derived from land cover maps, and subsequently related with a measured ecological response by statistical methods to assess their prediction power. Here, I reviewed several concepts regarding these pattern-process interaction...
Landscape metrics are used in landscape ecology to quantify landscape characteristics related to structure, function and change by quantifying the structure and distributional pattern of landscape elements such as plants, animals and other physical landscape features. To date, there has been little published research on landscape metrics that include social perceptions of landscape. In this pap...
landscape fragmentation has threatened the landscape continuity of ray which was maintainedfrom prehistoric times until recent decades. from 19th century that tehran sprawl growth affected ray’slandscape as a satellite city of tehran, ray experienced rapid landscape fragmentation and underwent manychanges. in order to cope with the threat, the process of changes from landscape fragmentation sho...
in this paper, landscape allocation using genetic algorithm (laga), a spatial multi-objective land use optimization software is introduced. the software helps in searching for optimal land use when multiple objectives such as suitability, area, cohesion and edge density indices are simultaneously involved. laga is a flexible and easy to use genetic algorithm-based software for optimizing the sp...
The report presents metrics as an approach for supporting the management of an application landscape by quantifying specific structural aspects. It derives basic guidelines for the construction of such metrics from a comparison of current application landscape metrics to metrics in software engineering and business administration. Thereby, it puts a special emphasis on integrating the metrics i...
human activities induced changes in land cover/use have extensive impacts on the landscape. in recent years, these changes had an increasingly growth due to irrational use of the natural resources in iran. hence, considering the negative effects of the inappropriate use of land and land-use change, understanding of the landscape changes over time is necessary to planning and implementation of s...
Abstract The results of an integrated study aimed at restoring water quality in a large watershed including seven catchments in north east Iran are presented in this paper. This case study demonstrates how landscape metrics reflect direct or surrogate causes of the land use practices that are the determinants of water quality parameters. Water quality factors included EC, pH, Cl-1, HCO3-1, SO4-...
Hot spots are often associated with places where an abnormal process has occurred. Accordingly, their identification can help experts and managers to scrutinize the state of health and sustainability, from an ecological point of view. The present study was therefore conducted to analyze the spatial autocorrelation and identify hot spots of 11 landscape metrics, the new Runoff Landscape Index (R...
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