Analysis of the Caspian shoreline changes Effectiveness in Connection with Land-use Changes Case study: Babolrood shoreline

Coastal areas are of special importance to humans due to their many uses. Changes in the coastline are inevitable despite human beings and their effects such as land-use changes, and therefore it is necessary to study the relationship between coastline changes and land-use changes. Babolrood coastline with a length of about 9 km in most of its area intersects with the city of Babolsar, which causes the impact of human activities on changes in the coastline in this area. The fluctuating behavior of the Caspian Sea and the rate of regression and advancement of the coastline in this area can be affected by human activities and changes in coastal land use. The data used in this study include the level of the Caspian Sea and Landsat images on TM and OLI sensors. The length of the 42-year study period from 1976 to 2018 has been determined, which is in line with the trend of changes in the level of the Caspian Sea. The analytical research method is a comparison between sea level data and information and shoreline changes and land use maps. The system (DSAS) in ArcGIS10.7 and ENVI5.3.1 has been used to calculate land-use changes. After calculating the shoreline changes and calculating the NSM, the shoreline change diagram was extracted and compared with the land-use changes. The results show that human activities above sea level have been effective in shoreline changes, the most important of which is the development of coastal structures and structures beyond the natural shoreline.