Models for Landscape Connectivity and Their Applications
景观连通性模型及其应用沿海地区景观

The models for landscape connectivity are distinguished into model for line connectivity, one for vertex connectivity, another for network connectivity and still another for patch connectivity. Because the models for line connectivity, for vertex connectivity, and for network connectivity have been long studied and have become ripened, the model for patch connectivity is paid special attention in this paper. The patch connectivity is defined as the average movement efficiency(minimizing movement distance) of animal migrants or plant propagules in patches of a region under consideration. According to this definition, a model for landscape connectivity is mathematically deduced, which applies to GIS data. The application of model for patch connectivity in the new-born wetland of the Yellow River Delta shows that patch connectivity has a negative interrelation with human impact intensity and landscape diversity.