Since coastal areas have highly dynamic nature and are one of the most beneficial regions of civilizations,it is of great significance to understand their characteristics and behavior.Changes in shorelines in the form...Since coastal areas have highly dynamic nature and are one of the most beneficial regions of civilizations,it is of great significance to understand their characteristics and behavior.Changes in shorelines in the form of accretion and erosion can leave devastating effects on businesses and cities located along the shore.In this study,we statistically calculated the tendency of shoreline changes by processing and analyzing historical satellite images of Boushehr Province,Iran.Results show that these shores have experienced both sedimentation and erosion in the past 30 years.Net shoreline movement presents more than 350 m of erosion and 650 m of accretion,which are corresponded to change rates of almost 12 and 22 m/a,respectively.Statistics of shoreline changes are calculated from regression methods including end point rate,linear regression rate,weighted linear regression,and least median of squares.The best-performed method is applied to predict the shoreline position in 2050 and 2100.Potential locations of excessive changes are identified for the predicted shorelines,which should be dealt with properly.展开更多
Nowadays agricultural methods developments that are productively,economically,environmentally and socially sustainable are required immediately.The concept of precision agriculture is becoming an attractive idea for m...Nowadays agricultural methods developments that are productively,economically,environmentally and socially sustainable are required immediately.The concept of precision agriculture is becoming an attractive idea for managing natural resources and realizing modern sustainable agricultural development.The purpose of this study was to investigate factors influencing impacts of precision agriculture from the viewpoints of Boushehr Province experts.The research method was a cross sectional survey and multi-stage random sampling was used to collect data from 115 experts in Boushehr province.According to the results,experts found underground and surface waters conservation,rural areas development,increase of productivity and increasing income as the most important impacts of precision agricultural technologies.Experts’attitudes indicate their positive view toward these kinds of impacts.Also behavioral attitude has the most effect on impacts.展开更多
文摘Since coastal areas have highly dynamic nature and are one of the most beneficial regions of civilizations,it is of great significance to understand their characteristics and behavior.Changes in shorelines in the form of accretion and erosion can leave devastating effects on businesses and cities located along the shore.In this study,we statistically calculated the tendency of shoreline changes by processing and analyzing historical satellite images of Boushehr Province,Iran.Results show that these shores have experienced both sedimentation and erosion in the past 30 years.Net shoreline movement presents more than 350 m of erosion and 650 m of accretion,which are corresponded to change rates of almost 12 and 22 m/a,respectively.Statistics of shoreline changes are calculated from regression methods including end point rate,linear regression rate,weighted linear regression,and least median of squares.The best-performed method is applied to predict the shoreline position in 2050 and 2100.Potential locations of excessive changes are identified for the predicted shorelines,which should be dealt with properly.
文摘Nowadays agricultural methods developments that are productively,economically,environmentally and socially sustainable are required immediately.The concept of precision agriculture is becoming an attractive idea for managing natural resources and realizing modern sustainable agricultural development.The purpose of this study was to investigate factors influencing impacts of precision agriculture from the viewpoints of Boushehr Province experts.The research method was a cross sectional survey and multi-stage random sampling was used to collect data from 115 experts in Boushehr province.According to the results,experts found underground and surface waters conservation,rural areas development,increase of productivity and increasing income as the most important impacts of precision agricultural technologies.Experts’attitudes indicate their positive view toward these kinds of impacts.Also behavioral attitude has the most effect on impacts.
