标题：Tracking environmental impacts and habitat fragmentation on coastal protected areas through object oriented analysis. Identification and categorization of linear disturbances in Corrubedo Natural Park (NW Iberian Peninsula)
期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2006
卷号：XXXVI-4/C42
出版社：Copernicus Publications
摘要：The increase of tourism in coastal protected areas is potentially one of the drivers of ecosystem fragmentation with the consequent important damages to their biodiversity values. One of the key management issues relates to the access regulations in protected areas to avoid the negative effects of trampling on natural and semi-natural habitats. These measures have to be carefully designed to achieve an effective protection of biodiversity and minimizing as possible the constraints to tourism development. Indeed, the accurate design and performance monitoring of such measures need effective methods of fragmentation evaluation. Besides, the retrieval of information about habitats past condition is necessary for understanding their present state and trends. In this work, we aimed the development of a consistent method for the automatic recognition of linear environmental impacts - namely paths and tracks- on natural and semi-natural habitats using colour aerial photographs and also applicable to historic black and white images. The method is based in a multi-scale segmentation of the images. Brightness, shape and connectivity criteria were implemented at several scales of the analysis by means of a fuzzy knowledge base, allowing the recognition of linear elements corresponding to networks of trails. We used as study case a protected area in the NW coast of the Iberian Peninsula with a complex pattern of vegetation. The method applied allowed the general discrimination of linear artificial features, identified with environmental impacts and human-driven habitat fragmentation, against other linear elements with similar brightness and shape, but different thematic meaning regarding their conservation implications
