This study highlights the coastline position changes of Qingdao coastal area from 2000 to 2019, using GIS and remote sensing technologies through Digital Shoreline Analysis System and LANDSAT images. Understanding the coastline movement by suitable method is an important challenge for this extremely dynamic coast. The shoreline changes were statistically measured using three techniques, namely; Linear Regression Rate, End Point Rate and Net Shoreline Movement. For the automatic coastline extraction, different methods were applied, but among them most suitable techniques is the canny edge algorithm technique, which gives the accurate result. The result show maximum accretion reached was 266.07m/yr, 2391.85m,124.47m/yr for End point rate, net shoreline movement and linear regression rate, respectively. While, the maximum erosion was-142.55m/yr,-1234.59m,-63.22m/yr for End point rate, net shoreline movement and linear regression rate, respectively. This paper hence presents the monitoring processes of coast and analyzing the coastline change by the use of geospatial techniques that would be helpful for the coastal planning and management of the Qingdao coast. The applicability of the proposed model is tested with other generic edge detection algorithms that include; Sobel, Prewitt, and Robert edge detection techniques and it was concluded that our model outperforming in accurately detecting the coastline.

Purpose – Climate change has several impacts on people ' s lives, directly or indirectly, and displacement is one such indirect effect. The purpose of this paper is to bring this fact to light, as Bangladesh is going to face severe problems due to the displacement of population predicted by researchers. Design/methodology/approach – This paper is an outcome of a thorough study of Bogi village in the southwestern coastal region of Bangladesh. Several factors such as demographic conditions, natural disasters, land loss and changes in landuse pattern, have been taken into consideration. Methods used for data collection were questionnaire survey and focus group discussions in the study area. The nature and extent of displacement are found by comparing the changes in occupation, location of settlement and permanent migration of family members. Findings – Population growth rate decreased in recent years as the annual growth rate for both sexes was 0.89 in between 1991 and 2001 but in recent years, from 2001 to 2005, it was 0.63, which is a clear indication that the natural growth is hampered or a major proportion of the population is migrating. On the other hand, 361 hectors of land were lost throughout the last 18 years. As a result, 93 percent of people in that area were forced to move to other places for at least one time in their life. The major reason of displacement found was loss of land and occupation caused by cyclone, storm surge and erosion. Practical implications – The study findings depict scenarios of rural urban migration due to disasters and critically found out the sectors to be addressed. The study can be a representative of the condition of almost all the remote coastal region and may work as a hammering tool to formulate strategic options to deal with the environmental issues and socio-economic situation. Originality/value – Sophisticated but commonly used methods and techniques have been used to find out the problems associated with climate change and disasters in the coastal belt. The study has taken an initiative to identify climate change impacts at micro level on the basis of spatial and non-spatial attributes. The way this study was conducted can be a popular path to put future researches on a human-oriented track.

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The study attempted to assess the changes in shoreline and erosion-accretion of newly formed island at the mouth of the Meghna river estuary in Bangladesh using multi temporal satellite images and GIS techniques. The current study used NDWI an MNDWI to delineate land and water boundary to extract the shoreline and also used some overlay analysis to measure the erosion-accretion. DSAS extension is used for analyzing the shifting of the shoreline. The results (1990-2015) show that the island has 1192 hectares of land accreted during this time period, and about 1 km of its shoreline lost during this time period as it has broken in few places. Most accretion found in the northwestern part and erosion in southeastern and southwestern part. The study area was divided into four different segments and about 115 transects were constructed, of which about 74 shows the seaward movement and 44 shows landward movement. Seaward movement and rate of shoreline shifting is higher in the northwestern part where net shoreline movement (NSM) is +1897 meters and end point rate (EPR) is +73 m/year. Landward movement and the rate of shoreline shifting are higher in southeastern and southwestern part of which net shoreline movement (NSM) is about -2680 meters and end point rate (EPR) is about -129 m/year. The highest landward movement is found as -2680 meters and highest seaward movement as +1897 meters. Accretion process is dominant while erosion process discontinued the shoreline in some places.

Purpose – Climate change impacts people ' s life directly or indirectly in several ways and displacement is one such indirect effect. This paper aims to bring this fact to light as Bangladesh is going to face severe problems due to displacement of population predicted by researchers. Design/methodology/approach – This paper is an outcome of a thorough study of Bogi village in the southwestern coastal region of Bangladesh. Several factors like demographic condition, natural disasters, land loss and changes in land use pattern, have been taken into consideration. Methods used for data collection were questionnaire survey and focus group discussions in the study area. Findings – The nature and extent of displacement are found by comparing the changes in occupation, location of settlement and permanent migration of family members. Population growth rate decreased in recent years as the annual growth rate for both sexes was 0.89 in between 1991 and 2001 but in recent years from 2001 to 2005 it was 0.63, which is a clear indication that the natural growth is hampered or major proportion of the population is migrating. Originality/value – The paper provides insights into the major reasons for displacement, especially loss of land and occupation caused by cyclone, storm surge and erosion. The assessment of the conditions allows the listing of measures to address the problem.