توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Monitoring Bioenvironmental Impacts of Dam Construction on Land Use\Cover Changes in Sattarkhan Basin Using Multi–temporal Satellite Imagery
نویسنده(ها): ، ،
اطلاعات انتشار: Iranica Journal of Energy & Environment، ششم،شماره۱، ۲۰۱۵، سال
تعداد صفحات: ۸
Dam construction has caused pressure upon land use\land cover change (LUCC) which is a major cause of bio–environmental changes. In this paper, the environmental impacts of Sattarkhan dam construction from 1987 to 2010 were monitored and recent changes are analyzed, using the Landsat Thematic Mapper (TM) and Enhanced Thematic Mapper plus (ETM+) images of 1987 and 2010; the time before and after the dam construction. The methodology consists of two main stages. In the first stage, image process techniques were employed to classify satellite images using the post– classification comparison change detection method. Results indicate that irrigated agriculture, bare lands, and dry agriculture were reduced in the study period, while water bodies and built–up areas increased. Based on this finding, significant changes in land use\land cover have occurred in Sattarkhan dam basin. In the second stage the bioenvironmental indices were applied to evaluate the bioenvironmental impacts of LUCC and it revealed that the maximum detrimental indices were concerned with conversion of agricultural land use and orchards to built–up lands and water bodies. As an overall evaluation, dam construction has a positive impacts rather than negative environmental impacts.

۲Improving farming practices using multi–criteria decision analysis in geographic information system for Damask Rose cultivating
نویسنده(ها): ، ،
اطلاعات انتشار: Global Journal of Environmental Science and Management، دوم،شماره۴، ۲۰۱۶، سال
تعداد صفحات: ۱۲
Lack of awareness of the critical factors involved in production of plants and sometimes, the cultivation of plants in areas unsusceptible to plant, can increase the amount of chemical fertilizer consumption in order to compensate the subsequent reduction of plant yield. This would increase environmental pollution. Thus, identifying of suitable areas where could supply plants initial needs of the environment is critical. For this goal, several criteria including soil conditions, climatologically indicators, topography situation and agro–climatology criteria were taken into account of modeling processing. Doing so, standardization process was performed on criteria and weighting process was performed by using of analytic hierarchy process approach. Geographical information system based on multi–criteria decision analysis was employed for weighted overlapping of indicators. Initial results indicated that East–Azerbaijan Province in the northern part of Iran has high potential for cultivating of Damask Rose. Results indicate that about 34.4% of East Azerbaijan Province has classified to be high suitability for cultivating this plant, while about 65.5 and 0.1 % of this area classified to be in the moderate and low suitability category respectively. In comparison of Damask Rose production during the 2014 and resulted analytic hierarchy process map results showed that areas with high suitability are not more under cultivation of this plant. Then, the findings of this study are great of importance for the purpose of regional planning in East–Azerbaijan Province.
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