مقالات رزومه مهندس صادق رحمانی

New technologies are an important part of adaptation strategies used by rural households to cope with climate change impacts. The purpose of this survey is to examine the factors affecting on acceptance of adaptation innovation methods among farmers in  irrigated farming systems of Mamassani County of Fars province.

This study was an applied research conducted with survey method. The statistical population of this study was 4033 farmers, among them 351 farmers was selected based on the Krejcie and Morganchr('39')s table and using a random-quota sampling method. Data were collected through a questionnaire based on the conceptual model. The face validity of the questionnaire was confirmed by a panel of experts and Cronbach alpha reliability coefficients indicated good-to-excellent reliability in the range of 0.70-0.78.

The results of logistic regression showed that the variables of farm size and intention to water conservation and perception of social risks of water scarcity are positively and significantly related to planting new drought-resistant crop practices. These variables can explain the 22 % of farmerschr('39') adaptation choices in water scarcity condition. The two variables of farm size and the intention to water conservation are important determinants in the adoption of new cropping as an adaptation measure. These variables predicted 23% of variance of acceptance innovation to adaptation. The perception of environmental risk of water scarcity, risk taking and knowledge about consequences of water scarcity had significant effects on adaptation. These predicted 33% of variance Pressurized Irrigation System.

According to the results, farmers have a high desire to protect water and information, risk perception and consequences of water scarcity are also high among them.

Dust storm typically occurs in arid and semi-arid regions. This phenomenon is more visible across the western, southwestern and central regions of Iran in the summertime. Previously conducted studies have reported that this phenomenon affects human health, agriculture, industry, infrastructure and transportation. The aim of this study is to investigate the economic effects of dust storms.

The present study is a descriptive investigation. The available articles and reports in valid Persian databases (Civilica, Magiran and SID) as well as English databases such as Web of Science, Scopus, Embase, PubMed and Google scholar were reviwed separately.

The dust storm phenomenon covers a wide range of geographical area. In fact, it occurs in all parts of the world and is considered as an international issue. During the occurrence of dust storm phenomenon, the concentration of various pollutants increases, which generally affects the atmosphere, biosphere, hydrosphere and throposphere. Dust storm have far-reaching environmental, health, and socio-economic effects that are linked in a chain, and ultimately each of these effects will have irreparable economic consequences. Therefore, the phenomenon of dust has wide economic effects such as the impact on the exports, delays in air travel, disruption of road transport, destructive effects on agriculture (agriculture and horticulture), road accidents, road damage, closure of schools, home appliances, electronic equipments, public billboards, irrigation canals, power plants and public health.

Dust storm phenomenon should not only be considered as an environmental issue, but due to the great economic consequences for the infrastructure of the affected areas and the country, it should be considered as a national and international concern. It is necessary to accompany many executive departments of the country to reduce its consequences. To reduce the man-made resources of the dust phenomenon, this study proposes integrated assessments and strategies that promote sustainable water and land management in farms, rangelands, deserts and urban areas, despite climate change.

Water resources scarcity and increasing pollution and the rapid increase in water demand due to population growth and higher livelihood standards along with climate change have created a widespread scope for water crisis in Iran and the world. Accordingly, water in agricultural production has become a limiting factor. Hence, farmers have adopted various strategies to reduce the effects of water scarcity in their agricultural practices. The purpose of this survey was to investigate farmer's beliefs and adaptation strategies for managing agricultural water under conditions of water scarcity and effective factors in selection of farmer's adaptation methods in Mamassani County of Fars province. The statistical population of this study was 4033 irrigated farmers. In order to select the sample, a random-quota sampling method was used. A sample of 351 farmers was selected based on the Krejcie and Morgan's table. The results of the study showed that the farms distance to the city center, agricultural experience, awareness of the consequences of danger, sense of commitment, risk taking, and access to credit could explain 42.2% of farmer's changing beliefs about water scarcity. Regression results of the factors influencing the selection of adaptation strategies showed that variables of farm size, intention for water conservation, risk salience, and social capital could predict 27% of the variability of adaptation strategies.