نتایج جستجو برای: landforms

تعداد نتایج: 1749  

Journal: :Journal of Cave and Karst Studies 2014

2004
G H Stewart J B J Harrison

Forest types of the Wapiti, Doon and Glaisnock catchments, ranked in order of proportion of preferred food species for deer, paralleled a gradient of landform stability. Seral forests and low altitude silver beech forests were preferred deer habitat because they contained the largest proportions of highly preferred species. They often occurred on unstable landforms such as debris cones, colluvi...

2012
Cyril Fleurant G. E. Tucker H. A. Viles C. Fleurant H. A. VILES

The purpose of this article is to present a model of the formation processes of cockpit karst landscapes. The CHILD software was used to simulate landscape evolution including dissolution processes of carbonate rocks. After examining briefly how the CHILD model operates, two applications of this model involving dissolution of carbonate rocks are presented. The simulated landscapes are compared ...

2004
Patrick L. Barnard Lewis A. Owen Robert C. Finkel

The Gangotri Glacier, at the source of the Ganges River, has fluctuated greatly throughout the late Quaternary in response to climatic oscillations. This has resulted in impressive moraines, paraglacial debris flow fans and terraces along the upper stretches of the Bhagirathi Valley. Cosmogenic radionuclide (CRN) dating of glacial and paraglacial landforms shows that fans, terraces and associat...

Journal: Pollution 2018

As the largest service industry in the world, tourism plays a special role in sustainable development. Geomorphic tourism is known to be a segment of this industry with lower environmental impact and underlying causes that explain lower demand; therefore, it is essential to study, identify, assess, plan, and manage natural tourist attractions. As such, the present study assesses the ability of ...

2011
Wen Zhang Yuichi S. Hayakawa Takashi Oguchi

“Danxia landform” is a landform type originally defined in China, characterized by red-colored sandstones and steep cliffs, and developed through long-term erosion. In recent years, Danxia landforms have been receiving international attention, and six examples in China became a UNESCO World Natural Heritage in 2010. However, morphometric studies of Danxia landforms in China have been very limit...

Among the various processes that destroy lands, soil erosion is a complex and hazardous environmental process that constitutes a serious threat to preservation of soil and water resources in Iran and has inflicted its negative effects on the vital ecosystem with the intensified utilization of nature by human beings. The present descriptive and analytic research employed the PSIAC model to study...

Journal: :پژوهش های جغرافیای طبیعی 0
سیاوش شایان استادیار، گروه جغرافیای طبیعی، دانشکدة علوم انسانی، دانشگاه تربیت مدرس مهران مقصودی دانشیار، گروه جغرافیای طبیعی، دانشکدة جغرافیای دانشگاه تهران موسی گل علیزاده استادیار، گروه آمار، دانشکدة آمار و ریاضیات، دانشگاه تربیت مدرس محمد شریفی کیا دانشیار، گروه سنجش از دور، دانشکدة علوم انسانی، دانشگاه تربیت مدرس سیده فاطمه نوربخش دانشجوی دکتری جغرافیای طبیعی، دانشکدة علوم انسانی، دانشگاه تربیت مدرس

spatial analysis of aeolian landforms by fractal theory (case study: ardestan rig) abstract natural sciences face to a great revolution, nowadays. now, scientists think the world as a collection of complex systems which prediction of consequences of this complex systems is so difficult. in this situation the systems have rotational act so irregularly lead to regular and regularly lead to irregu...

2011
Berthold Bauer Christopher Kilburn

Earth’s landscape is continually evolving as land uplifted by tectonic and volcanic processes is eroded by water, ice, and wind. On Earth, the dominant landforms have been produced by the action of rivers and glaciers transporting material from mountains to the sea. The amount and proportion of water and ice available for changing the landscape are both sensitive to climatic regime, so that a s...

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