Design and implementation of national environmental management and evaluation system of farmlands

Aiming at the problem that existing regional information systems of farmland environment cannot efficiently manage the massive environmental data within the national scope,the paper analyzed the requirements of national environmental information system of the farmlands,designed the distributed system structure based on SOA to construct the national information system for environmental management and evaluation of farmlands,in which the data of samples and plots in national farmlands were collect,store and visualize through the web-services.The system could estimate the value of heavy metal in the plots through block Kriging interpolation,and make the quality evaluation of the soil and the farming suitability evaluation of edible agricultural products,non-pollution food and green food according to the national standards.Operation result showed that the system had good stability,flexibility and reusability so that it could provide a reference for the construction of the same type of national information system.