نتایج جستجو برای: land change modeler

تعداد نتایج: 691408  

Journal: :محیط شناسی 0
فاطمه جهانی شکیب دانشجوی دکتری آمایش محیط زیست، دانشکدۀ شیلات و محیط زیست، دانشگاه گرگان بهرام ملک محمدی استادیار گروه برنامه ریزی و مدیریت محیط زیست، دانشکدۀ محیط زیست، دانشگاه تهران احمدرضا یاوری دانشیار دانشکدۀ محیط زیست، دانشگاه تهران یونس شریفی دانشجوی ارشد rs و gis، دانشگاه خوارزمی تهران فاطمه عادلی دانشجوی ارشد برنامه ریزی و مدیریت محیط زیست، دانشکدۀ محیط زیست، دانشگاه تهران

introduction land use change and climate change are the major concerns in the global environment. many environmental parameters affect the behavior of the earth’s climate system and its terrestrial components. effects of land use and land cover changes have direct influences on climate changes. now, climate change is known widely as a global health problem that has adverse impacts on natural an...

2001
R. Gil Pontius Laura C. Schneider

Scientists need a better and larger set of tools to validate land-use change models, because it is essential to know a model’s prediction accuracy. This paper describes how to use the relative operating characteristic (ROC) as a quantitative measurement to validate a land-cover change model. Typically, a crucial component of a spatially explicit simulation model of land-cover change is a map of...

Journal: :CoRR 2003
Julius Hrivnac

Many entities managed by HEP Software Frameworks represent spatial (3-dimensional) real objects. Effective definition, manipulation and visualization of such objects is an indispensable functionality. GraXML is a modular Geometric Modeling toolkit capable of processing geometric data of various kinds (detector geometry, event geometry) from different sources and delivering them in ways suitable...

Journal: :Educational Technology & Society 2003
Yacine Atif Rachid Benlamri Jawad Berri

Constructive approach to learning focuses on the learner’s behavior, enabling a self-adapted exposure to knowledge that is precisely tailored to the learner’s needs and background. The building blocks for such adaptive knowledge construction are the evolving learning objects (LOs) which are self-contained entities that encapsulate a segment of knowledge as well as some metadata attributes and p...

2009
Qiming Zhou Bo Sun

Landuse and land cover change (LUCC) is regarded as a good indicator that represents the impacts of human activities on the earth’s environment. When the large collection of multi-temporal satellite images has become available, it is possible to study a long-term historical process of land cover change. The Pearl River Delta (PRD) region in southern China is a region where the rapid development...

Journal: :ecopersia 0
alireza ildoromi associate professor, department of range and watershed management, malayer university, malayer, iran mahtab safari shad ph.d. student, department watershed management, faculty of natural resources, sari university of agriculture and natural resource, sari, iran

landsat data for 1992, 2000, and 2013 land use changes for ekbatan dam watershed was simulated through ca-markov” model. two classification methods were initially used, viz. the maximum likelihood (mal) and support vector machine (svm). although both methods showed high overall accuracy and kappa coefficient, visually mal failed in separating land uses, particularly built up and dry lands.there...

2008
Bethany A. Bradley Erica Fleishman

Land-cover change is a major component of global change (Foley et al., 2005). Many forms of land-cover change, such as deforestation and urbanization, are directly associated with land use. Other land-cover changes, such as melting of permafrost, may be indirectly associated with human activity via anthropogenically induced climate change. Further changes in land cover, such as the expansion of...

Journal: :پژوهش و برنامه ریزی روستایی 0
سیدحسن مطیعی لنگرودی محمدرضا رضوانی زهرا کاتب ازگمی

today, the concerns and discussion about bio environmental and land usage changes have been considered seriously. so, the land usage for tourism purposes is considered as a basic subject. one of the reasons of land usage change is tourism activities. regarding to bandar anzali situation (coast region), it attracts the tourists attention to buy land in order to build homes and also attracts the ...

Journal: : 2021

Arazi kullanım/örtüsü sınıflandırmalarının yapılarak şehirlerin bilgilerinin takip edilmesi ve değişimlerinin analiz edilmesi, arazilerin doğru amaçla kullanılması çevresel sürdürülebilirlik adına oldukça önemlidir. Bu sınıflandırmalar yapılırken diğer çalışmalarla tutarlılık kıyas yapabilme açısından uluslararası standartlaşmış sınıflandırma yöntemleri gerekmektedir. çalışmada CORINE veri taba...

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