标题：GIS models of the environmental factors and the sustainable territorial development constraints in three nature protection areas in the city of Plovdiv
摘要：The aim of this study was to define and to analyze the environmental and territorially-determined factors and constraints influencing the sustainable development and the sustainable management of three protected areas located in the city of Plovdiv. The study sites are natural protection areas of unique nature due their mixed natural and anthropogenic functions. Being integral parts of the city they are balancing the requirements of specialized nature protection with their typical urban recreational role as urban parks. In order to meet the requirements of all these overlapping and sometimes controversial functions, the present study analyses the territorial development factors and constraints through detailed geo-informational models of the territory and its biotic, abiotic, natural and anthropogenic structures. These models were developed as part of the work on the management plans of the three protected sites. The biotic and abiotic factors were investigated through field surveys where all major plant and animal groups were studied. All important species and habitats, all specific threats and conservation problems together with all anthropogenic structures were mapped as parts of the GIS model which then served as a basis for the functional zoning of the three protected territories.
关键词：GIS modeling; protected areas management; sustainable development; environmental factors; development constraints
