Evaluation method of land-scaled consolidation potential based on landscape pattern principle

The purpose of land consolidation includes to increase land quantity, to enhance land quality and production efficiency. Scalced land management is a main way of enhancing land production efficiency, and it is also the demand of modern scaled agriculture development. The paper focused on discussing a quantitative method for evaluating land scaled consolidation potential (LSCP) using indices including landscape pattern indices such as: patch area, richness index, patch square index, concentration index and terrain indices. The study provided a new method to regional land consolidation planning. By taking the arable land evaluation in the Karst mountain area in Guangxi Zhuang Autonomous Region as a study example, the landscape pattern indices and terrain indices were used combing with GIS technology to evaluate the LSCP in the region. The study results showed that the LSCP comprehensive index of most villiges and towns in Karst mountian areas in Duan Countiy was very low, and the index of the villiges and towns in the river vallvey areas was relative high. The LSCP comprehensive index of the river valley region was 0.85, which was five times more than that of the Karst peak cluster-depressions and Karst peak forest-valley region. The LSCP is strongly restricted by the combination of the spatial landscape pattern of land resource and the terrain characters.