Design And Realization Of WebGIS-based Digital Agriculture Spatial Information Management Platform

Agriculture is the foundation of the national economy. With the advent of the 21st century, information technology has been widely applied on agriculture. Digital agriculture technology is one of important symbols of modern agricultural high-tech, including digitalization, visualization, design, control and management of the whole process of agricultural production and supervision with application of digitalization technology. The construction of digital agriculture depends on a vatriety of agricultural data, which are mostly based on spatial distribution. Agricultural resources distributed in wide geographical space, and agricultural productions are also performed in wide geographical space. Spatial information technology is more and more widely used in agricultural field. Using information technology to develop Digital Agriculture Spatial Information Management Platform (called DASIMP for short in the following) will be functioned as vital tools on tackling our resources and environment problem and sustainable development of agriculture and countryside.Based on a Shanghai science and technology committee's project of "digital agriculture spatial information management platform", the paper is mainly on the comprehensive study of foundation of theory, technology, software products concerning WebGIS, as well as system framework, function design, realization of DASIMP.The thesis totally is divided into six chapters. Chapter 1 is "Introduction". It firstly presents the significance of combining WebGIS and digital agriculture, and then analyzes application status of WebGIS and digital agriculture spatial information management system at home and abroad. Chapter 2 is "WebGIS and correlative technology", which illuminates the characteristics, applicational domain and correlative technologies of WebGIS. Chapter 3 is "choosing the right WebGIS software product", which first introduces the technological characteristics of primary WebGIS software products, and then presents the architecture of ArcIMS. Chapter 4 is "the design of DASIMP", which mainly analyzes the demand of DASIMP, and then then presents the principle and method of system design. In the end of chapter, the author designs the system structure and function. Chapter 5 is "the development and realization of DASIMP", which introduces the development environment of DASIMP, the key technology in development, and the realization of several representative functions module, like measure, query and buffer. Chapter 6 is "conclusion and expectation", which concludes the whole research, describes research findings and brings forward the futher research direction for the next step.