Evaluation of changes in the ecological structure of Behshahr city in order to provide solutions to improve landscape cohesion and promote environmental resilience.

Today, urban society is facing many problems, including environmental issues. Behshahr city has also been created due to population change and increase in construction with many environmental issues such as: change and destruction of natural lands, reduction of green areas, fragmentation of land uses, etc. Based on the purpose of this study, the ecological change of Behshahr city in order to provide solutions for ecological configuration of the landscape (landscape) and the promotion of environmental radiation, using the principles of the landscape with the Forman mosaic model (spots, corridors and matrices) and Pathology is one of the structural elements of the landscape. For this purpose, first the elements of the ecological structure of the city were detected using satellite images of 1986 and 2020, then the changes of these elements were analyzed by 5 metric landscape (MNN, LSI, MPS, LPI, NP) in Fragstats program and in The pathology of these elements was continued by analyzing natural and artificial spots and corridors of the city. Finally, by zoning the degree of ecological continuity (vegetation) in Arc GIS software, solutions were provided to improve the ecological continuity of each zone. The results show that the elements of ecological structure, especially agricultural spots, gardens and green space of Behshahr city are not in good condition in terms of composition and spatial distribution and during the study period in terms of ecological continuity, especially agricultural spots have been severely damaged. So that crop and garden green spots have decreased by 52% and 31%, respectively, during the last 34 years. Last year it was reduced by about 48 meters, gardens and green spaces by about 10 meters, and the distances between similar ecological spots increased. Finally, it leads to the presentation of: (1) operational and executive "protective" solutions in relation to natural and green corridors and stains (2) and "corrective" operational and executive solutions based on the creation of green ecological networks and the restoration of stains. Destroyed as well as a critical network map of the study area.