Study On Spatial Information Sharing Service For The Optimal Utilization Of Agriculture Land In Fujian

At present,the monitoring of cultivated land fertility and crop suitability evaluation in provincial scope has formed a standardized operation process,and has become the normal work of agricultural supervision departments.As the work progressed,a large number of valuable results in geographic information of agricultural lands,such as the monitoring data of cultivated lands fertility,the crop suitability evaluation of varied crops and the optimal utilization of the result data and the auxiliary basic geographical data needed in the evaluation process,etc,are scattered in various scientific research and production units in terms of verified formats and media.Compared with the traditionally relational data,the above results not only contain structured relational data,but also contain different vector and raster geospatial information,and have not yet formed a unified standard mode of organization and storage.It has become an urgent problem to be solved in the standardization of cultivated land fertility monitoring and crop suitability evaluation.On the other hand,the valuable results stored and submitted in the form of geographic data are difficult to be used between different production and scientific research departments,thus become excluded.Therefore,researches of the organization and storage mode of agricultural land geographic information data needed for provincial cultivated land fertility monitoring and crop suitability evaluation and construction of the provincial agricultural land geographic information sharing service embrace with great practical implications to the construction of digital agriculture.In view of the above problems,the paper will be extended in the following aspects.(1)Taking Fujian Province as the research area,this paper will collate and analyze the process and result data needed for cultivated land fertility monitoring and suitability evaluation of different kinds of crops in Fujian Province,draw lessons from the geographic informationframework of digital city,and make use of object-oriented modeling technology so as to expand the study on metadata construction,geographic data organization and storage model of agricultural land geospatial data in provincial area.(2)Based on OGC-OWS service standard,the paper will research the composition and construction of geographic information sharing services such as agricultural land thematic geographic information mapping service and geographic element service.Promote the sharing and application of result data among third-party applications and other scientific research and production departments.(3)Based on the open source of the WebGIS platform,spatial database management system PostgreSQL/PostGIS and other technologies as well as the J2 EE development platform,this paper will research on the provincial agricultural land geographic information sharing service demonstration platform and its application,then verify the research results.