نتایج جستجو برای: 1215254 and 2368101 hectares areas

تعداد نتایج: 16847519  

S.A. Bonyad, T. Rostami Shahraji

Forests of Iran located on the Southern border of the Caspian Sea cover 1.9 million hectares. The Caspian forests are divided into four separate forestry areas. One of these being Guilan influx area with total area of 565000 hectares. About 30 to 40 percent of Guilan province forests are suitable to short rotation forestry for afforestation. Slash pine (Pinus elliottii) is one of the main exo...

2012
Siqing S. Chen

Megalopolis is a group of densely populated metropolitan areas that combine to form an urban complex. Since China introduced the economic reforms in late 1970s, the Chinese urban system has experienced unprecedented growth. The process of urbanisation prevailed in the 1980s, and the process of predominantly large city growth appeared to continue through 1990s and 2000s. In this study, the magni...

Journal: :IOP conference series 2023

Abstract Landslide susceptibility is a measure to express the high or low probability of an area experiencing landslide disaster which has impact on community very necessary for mapping Tirtomoyo Watershed including Tirtomoyo. From 2014 2022, experienced 147 landslides caused material losses and casualties. The aspect assessment in watershed basic reduce risk loss. This study aims map landslide...

Journal: :caspian journal of environmental sciences 2005
s.a. bonyad t. rostami shahraji

forests of iran located on the southern border of the caspian sea cover 1.9 million hectares. the caspian forests are divided into four separate forestry areas. one of these being guilan influx area with total area of 565000 hectares. about 30 to 40 percent of guilan province forests are suitable to short rotation forestry for afforestation. slash pine (pinus elliottii) is one of the main exoti...

Journal: :جغرافیا و توسعه فضای شهری 0
محمّد اجزاء شکوهی فرزانه رزّاقیان

this paper identifies effective criteria in locating urban parks land use in district 9 of mashhad. this recognition is in three scale of neighborhood, local and regional with emphasis on the principles of minimum distance.finally, surveying the potential of district 9 to build these kind of parks is the main purpose. therefore, by using document anf field research method ,first we survey the l...

Journal: :international journal of environmental research 2012
a. nejadi h.r. jafari m.f. makhdoum m. mahmoudi

the present study aims to simulate the spatial pattern of land use change in lisar protected area,iran. land cover maps for 1989, 2000, and 2007 were depicted using tm, etm+, and irs liss-iii images ofthe area at stake. images were classified using a merge of unsupervised and supervised classification. camarkov model was used to predict land cover maps as a top-down approach in investigating la...

Journal: :محیط زیست طبیعی 0
آزاده مهری کارشناس ارشد محیط‏زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان عبدالرسول سلمان ماهینی دانشیار گروه محیط‏زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان سید حامد میرکریمی استادیار گروه محیط‏زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان حمیدرضا رضایی استادیار گروه محیط‏زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان

to preserve wildlife habitats and populations, it is normal practice to select representative natural areas. the aim of this research is prioritization of candidate sites for environmental protection in mazandaran province. for this purpose, 26 forest cover types, habitats of 8 mammal species and important distribution areas for 4 groups of birds were used as input criteria. simulated annealing...

Journal: :Language and speech 2016
Daniel Recasens

Abstract This study uses acoustic energy measures for /b, d, g/ after /f, s, ∫, l, r/ in Catalan in order to test whether postconsonantal voiced stop lenition is ruled by minimization of articulatory effort, acoustico-perceptual continuity of an ongoing prosodic constituent or some other principle of articulatory organization. Data for eight speakers reveal that lenition is more prone to operat...

Introduction: Currently, desertification is a catch-up of many countries in the world, including developing countries. This problem is seen not only in dry and semi-arid areas, but also in parts of the semi-humid areas. Desertification involves processes that are both natural causes and human inferiority. Land degradation is referred to as desertification due to one or a combination of processe...

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Rapid urban development in recent decades, has affected various aspects of social, economic, cultural, political and human environment. Negative environmental effects of urban growth have increased to such extent that is the largest threat in front of the ecosystem. One of the consequences of these negative environmental effects is ecological and biological capacitance reduction, also referred ...

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