Tracing of heavy metal pollution sources is a current hot issue of agricultural soil quality management. Land utilization is one of the important factors which affect the heavy metal contents of regional soil. In order to model the relationship between soil heavy metal contamination and land utilization, this paper adopts a novel positive and negative association rule method in order to effecti...

Land units, land utilization types and land use systems need to be defined differently for different scale levels, eg, for farm, regional and world levels, as illustrated in this paper. The Hoosbeek and Bryant diagram, showing methodology as a function of spatial scales, is used to illustrate research procedures based on user demands. Land use decisions are made on strategic, tactical and opera...

Land degradation monitoring is of vital importance to provide scientific information for promoting sustainable land utilization. This paper presents an expert knowledge and BP-ANN-based approach to detect and monitor land degradation in an effort to overcome the deficiencies of image classification and vegetation index-based approaches. The proposed approach consists of three generic steps: (1)...