نتایج جستجو برای: technogenic desertification

تعداد نتایج: 2649  

Journal: :desert 0
gh. chamanpira senior expert, agriculture and natural resources research center of lorestan province, khoram abad, iran gh.r. zehtabian professor, faculty of natural resources, university of tehran, karaj, iran ahmadi h. professor, science and research branch, islamic azad university, tehran, iran m. ekhtesasi ekhtesasi

in recent years, the topic of desertification has been discussed in different ways in scientific areas. this event occurred globally, regionally and nationally and many steps were taken to stop it. desertification is challenged universally and its destructive effects are unavoidable and its consequences do endanger the life of inhabitants. the identification of sensitive regions and prevention ...

Journal: :آب و خاک 0
مرتضی اکبری احسان رعنایی سید حمزه بدیعی نامقی

abstract desertification could cause reduction of the ecological and biological potential of land which may occur both naturally and artificially. identifying and evaluating the effective factors in development of desertification is very important for better management of land. the aim of this research is to evaluate the sensitive input parameters in the desertification condition by using of ar...

Journal: :desert 2013
m. tahmoures m. jafari h. ahmadi m. naghiloo

desertification is recognized as a serious environmental threat in iran because of its climatic-geomorphologicconditions. desertification and land degradation in arid, semi-arid, and dry sub-humid regions, is a globalenvironmental problem. accurate assessment of the status and trend of desertification is instrumental in developingglobal strategies to prevent and reverse this problem. the goal o...

2013
Marija Savić Ivan Mihajlović Živan Živković

This paper presents the results of attempt to perform modeling of SO2 concentration in urban area in vicinity of copper smelter in Bor (Serbia), using ANFIS methodological approach. The aim of obtained model was to develop a prediction tool that will be used to calculate potential SO2 concentration, above prescribed limitation, based on input parameters. As predictors, both technogenic and mete...

Journal: Desert 2012
Gh.R. Zehtabian H. Ahmadi M. Tahmoures M.H. Sadeghi Ravesh

Due to increasing importance of desertification challenges and its consequences the necessity of sustainabledevelopment achievement in arid and semi-arid regions is essential in order to avoid limited sources asting, increase the efficiency of controlling, reclamation and restoration projects of natural areas. Based on the iterature review, it has been recognized that combating desertification ...

Journal: :desert 2013
gh. chamanpira gh.r. zehtabian ahmadi h. m. ekhtesasi

in recent years, the topic of desertification has been discussed in different ways in scientific areas. this event occurred globally, regionally and nationally and many steps were taken to stop it. desertification is challenged universally and its destructive effects are unavoidable and its consequences do endanger the life of inhabitants. the identification of sensitive regions and prevention ...

Journal: :international journal of advanced biological and biomedical research 2014
mohammad ali hakimzadeh

in many countries, studies to determine the severity of desertification and providing land plans to implement desertification. one of the models is modified medalus or iranian model (imdpa), has been used in present research in order to investigate desertification situation in the tashk region of fars province. in this research, the modified imdpa model used with emphasis on the water, soil and...

Journal: :international journal of advanced biological and biomedical research 2013
gholam reza rahdari mohammad reza rahdari ali akbar fakhireh ali reza shahryari hassan khosravi

today one of the ecological crisis is the phenomenon of desertification that affecting the world. desertification is more related to social and anthropogenic issues than natural causes and it becomes more important over the time. monitoringis the systematic collection and analysis of information as a project progresses. in this study, using ahp method and gis techniques has been to assess deser...

Today, degradation of soil and water resources are the most important factors of desertification in arid and semi-arid areas as a result of mismanagement and improper human behavior. Enforcement measures in relation to desertification control have to be based on knowledge of the current state of desertification risk and its severity. In the present study, to evaluate the risk and severity of de...

Nowadays, desertification is one of the ecological crises of the world. To control Desertification, having a clear understanding of its factors and processes is necessary. KALMAND Protected Area region of Yazd with area of 71269.37 Hectares’ was considered to evaluate current Condition of desertification using ICD. Iranian Classification of Desertification (ICD) was presented by M. Ekhtes...

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