extended abstract 1. introduction the flow of tourism develops depending on the supply of tourism product. resorts and residential centers are one of the main factors attracting tourists in order to use the tourism product of a region. optimal locating of residential centers, especially in cities and areas which are in the way of passing tourists, has an important role in the visitors’ using of...

in order to study the seasonal population fluctuations and density of aphid species (vector of potato viruses) in hamedan province during 1999–2003, four important potato-growing areas (hamedan, kaboudarahang, asadabad, and ghahavand) were studied using, yellow water traps. among collected aphids, four species belonging to aphididae and one to drepanosiphidae were identified in potato fields. i...

jajrood protected complex (khojir and sorkheh hesar national parks and jajrood protected area) is one of the most important habitats of central alborz wild sheep (ovis gmelini x o. vignei) in iran. since the species mate in fall, then fall home range has critical rule in life cycle of this species. using the ecological niche factor analysis (enfa), effective factors on the presence of species w...

the climatic, geographic and topographic characteristics, ecological conditions, forest and pastures, strong water resources, high vegetation, wild life and various hunting areas of kurdistan province are strong tourist centers. in this research using gis potential of suitable zones for claiming, rocking, ranging, visiting the nature, thermal spring, ski and winter sport, water sports and fishi...

Both the number of cases of dengue fever and the areas of outbreaks within Nepal have increased significantly in recent years. Further expansion and range shift is expected in the future due to global climate change and other associated factors. However, due to limited spatially-explicit research in Nepal, there is poor understanding about the present spatial distribution patterns of dengue ris...

We mapped current and future temperature suitability for malaria transmission in Africa using a published model that incorporates nonlinear physiological responses to temperature of the mosquito vector Anopheles gambiae and the malaria parasite Plasmodium falciparum. We found that a larger area of Africa currently experiences the ideal temperature for transmission than previously supposed. Unde...

rural industrialization or establishing industries in rural area as an important and most prevalent procedure for non agricultural economic development is discussed in this article. lack of main agricultural production parameters like water resource, rich and suitable soil, in these areas, in spite of plenty of manpower, directs the situation to day by day immigration rate from rural areas. ind...

wetlands in the lower reaches of songhua river (lrsr), northeast china, are rich in biodiversityand natural resources, which provide crucial staging and wintering habitats for various endangered species.however, in the past five decades, the size of this wetland area has decreased, and its quality has deteriorated because of increased natural and human activities. wetland restoration is critica...