In order to analyze the floods of the Larestan area, the rain days with 0.1 millimeter or more were obtained from the Iranian Meteorological Organization for the 1960-2005 period. First the plenty of rainy days were divided to groups based on their continuation, Then made known the highest region rains during the statistical period, after that assigned the probable rain and return period of torrential Larestan's rains.The result of research showed that:1) The most important cause of happening of Lar floods is intensity and duration of rain and also topography of region.2) The mainly Lar flood way that damage the ancient texture of city is Varband flood way and the new texture of city is Asad strait's flood way.

Drought is considered as one of the undeniable climatic facts of Iran, and regardless of it, any forecasting and planning will fail. The analysis of drought and understanding its features can help planners to deal with the crises that occur. In the present study, Larestan, that is located in the Fars province, was selected as a case study, and to evaluate the characteristics of drought, precipitation data of nineteen stations in the period 1368 to 1392 were used. The purpose of using indicators SPI, CZI, ZSI and RDI was to identify the various features of drought. After data analysis, it was concluded that ZSI Shows the durability of drought’s periods longer than other indices. Also, SPI refers more deterioration of  droughts. At the monthly scale, SPI  Shows more severity than other indices, but at the annual scale, reaction of RDI is greater of other indices.

Background and objective: Malaria is a major public health problem worldwide, especially in tropical areas is between 300 and 500 million people affected annually by about one million people die of the disease. The purpose of this study was to investigate the epidemiology of malaria in the city sets Larestan.Materials and methods: This study was a cross-sectional study evaluated include all recorded cases of malaria by community health center is the city Larestan years 1998 to 2010. The analysis of data was done by Excel software.Results: A total of 1184 cases of malaria in the years 1377 to 1389, 178 cases were Iranian and non-Iranian people in 1006. Most of the cases in 1380 were 249, 65 of the transfer, the incoming 597 and 522 cases of recurrence and in terms of type, Plasmodium vivax, with 1099 cases and most cases have had.Conclusion: the disease malaria in larestan County, trend was the bearish but because the majority of cases of the disease have been immigrants, immigrants make up especially so, controlling and monitoring the log can help organizations improve and minimize this disease have in larestan.

Background: Cutaneous leishmaniasis (CL) with diverse clinical manifestations is prevalent and remains a major public health problem in Iran, while its incidence has been doubled over the last decade. This study was performed for the first time in Larestan, Fars province, located in southern part of Iran to determine infectious patterns in the reservoir hosts and sand fly vectors using parasitological and molecular methods.Materials and methods: Thirty two rodents and 156 sand flies were evaluated for the patterns of Leishmania infection. PCR was performed to characterize the parasites using the culture of parasite in Evans medium.Results: Tatera indica, Gerbillus spp. and Meriones crassus were the trapped animals and Phlebotomus papatasi was the trapped fly. L. major was isolated and identified as the causative agent of CL from T. indica, Gerbillus spp and two female Ph. papatasi (Alamarvdasht). Among the trapped rodents, four T. incida were positive for L. major in Larestan region including Alamarvdasht town (2 males), and Lamerd town (2 females). L. major was also isolated from two female Gerbillus spp in Lamerd and Lar towns in Larestan region. No infection was detected in M. crassus in the area. Conclusion: This is the first report detecting L. major in naturally infected T. indica, Gerbillus spp and Phlebotomus papatasi in Larestan region.

Humans according to their needs change their ecosystem for adjusting geographical conditions at any time. Larestan region is not the exception and has many warm and dry climate specifications such as, high walls and shaded, wind wards and the most important of all are Abanbars. This important phenomenon plays a major role in the morphology of the town from the early days. In this study, the Abanbars were classified based on 11 different aspects. In the data taken that, 58 percent of them were urban Abanbar, 9 percent rural, and 33 percent were outdoor, most observations were related to 105 dome covers, 189 cylinder reservoirs, 211 internal stairs, 128 indirect water supply, 209 ventilation by stomata, 148 drinking water usage, and 176 Simple facades. Also total volume of Abanbars area about 1.87 million cubic meters was estimated, that 65 percent of them are active, 17 percent semi active, and 18 percent are inactive. Finally, most economic and best decision to prevent damage of this important phenomenon and survival region, preserving natural user the Abanbars were presented. Listen Read phonetically Dictionary-View detailed dictionary.

Introduction: Malaria is still one of the important health problems in tropical countries with annual large number of morbidity and mortality in world population.The hot and dry southern area of Iran, accommodating numerous emigrants including Afghanis and Pakistanis, is considered a high risk region in the area. The aim of this survey was detecting cases in Larestan, Fars province.Methods: In this descriptive-analytic study, 1257 cases were selected via cluster sampling from foreign emigrants residing outskirts of Larestan. Blood samples were collected from finger tips and blood smears stained with Giemsa. A questionnaire was filled simultaneously recording demographic status of people, signs of malaria disease, history of diagnosis and treatment, time of entering the country and the region. SPSS software and Chi-square test were used for data analysis. P<0.05 was considered significant.Results: Infection rate of malaria was 6.3%. Among 405 (32.2%) Iranians, 27 (6.7%) people were infected and 378 (93.3%) were noninfected. Chi-square test showed that malaria infection rate in these 2 groups was not significantly different. But this test was significant (P<0.01) in newcomer Afghans (entrance time less than 3 months).Conclusion: Considering abundancy of Anopheles mosquitos in hot regions of southern Iran and short migration of patients in the area, controlling boundaries on entrance and also activating healthcare centers in high risk areas for malaria infection, is highly recommended.

Drought is one of the most important environmental events and also it’s the integral part of climate fluctuations. This phenomena is a specific condition of precipitation loss and high temperature that might happen in every climate condition. Drought condition awareness and drought intensities zoning might decrease risks of drought losses significantly. Present study is an attempt to evaluate accuracy of place interpolation methods for occurred drought intensities zoning in LARESTAN in 1387 using Percentage of normal precipitation Index (PNPI), standard precipitation index (SPI), deciles precipitation index (DPI), and Rainfall anomaly index (RAI). Therefore, it used data of 20pluviometry stations in LARESTAN that distributed appropriately and inverse distance weight (IDW) with 1 to 3 powers, ordinary kriging (OK), and universal kriging (UK) Methods, were studied.