Land suitability evaluation under different scenarios based on GIS and fuzzy mathematic methods

Under the guidance of the theory of sustainable development for Chinese agriculture, taking Houhu Farm in Jianghan plain as the example, the means of the land multi-suitability evaluation was explored using Geographical Information System (GIS) and fuzzy synthetic evaluation methods under different scenarios, i.e., the largest productive potentiality scenario and the highest economic benefit scenario. First the assessment index system and assessment index classification standard were established according to different scenarios and crops. Then the assessment index values and index classification standard were digitized and standardized by standardization function. Finally the suitability classes of different assessment units were obtained with subject maps and datasets using GIS and fuzzy synthetic evaluation methods. The research proves that the multi-suitability of land use is good in most parts of the study areas Houhu Farm under the largest productive potentiality and highest economic benefit scenarios, which reveals the practical conditions and is feasible.