摘要
为了促进我国草原科学事业的发展,加快草原资源的数字化进程,实现信息共享,在国际互联网上建立了中国草原资源共享地理信息系统(网址:www.grassland.net.cn),已稳定运行两年。系统应用地理信息系统(GIS)原理,将8个栅格图层(中国的草地类型图、土壤类型图、行政区划图、年均降水量图、年平均气温图、≥10℃积温图、高程图、植被指数图)叠加在一起,应用JAVA技术,实现了图斑到属性及属性到图斑的复合查询。互联网用户可用鼠标在表层图像任意一个象元上获取8个图层相应坐标点的9项地理信息(包括地理坐标),也可通过组合菜单选定单项或多项图像属性,由系统迅速查找出图像上的对应图斑,并用醒目颜色在最上层图像上标示分布情况和统计面积。系统完全自行设计、自主开发,结构简单、运行速度快,拨号上网用户也可方便快速地使用,是我国在国际互联网上第一个关于中国草原资源的网络地理信息系统(WebGIS),是对我国草原资源进行数字化、信息化管理的一种尝试。
In order to improve the information management of grassland resources in our country, and promote the information sharing, the Geographic Information System of Grassland resources in China was established on the Internet. The Website is www.grassland.net.cn, and the system has been run for two years. This system, applying the theory of GIS and using JAVA technology, overlays 8 raster images together and offers a inquiry platform that provides the functions of browsing multi_geographic information from map spots and searching geographic distribution from unique or multi attribute of grassland.The multi-layer maps include vegetation map, soil type map, annual precipitation map,annual average temperature map,accumulated temperature (≥10℃) map, elevation map,biomass map and administrative region map. Users of the Internet can browse 9 items of geographic information (including geographic coordinates) of any point on the vegetation map and also can specify single or multi geographic attribute for the system to find the geographic distribution and area. The system is the first Web Geographic Information System (WebGIS) about the grassland resources of China on the Internet. The work of developing the system is a trial study for information sharing and digitalized management about the grassland resources in China.The software was developed by themselves.The method of system developing and the function offered to users of Internet were introduced and the special features of the system were discussed.
出处
《中国草地》
CSCD
2004年第4期16-20,共5页
Grassland of China
基金
973"项目"草地与农牧交错带生态系统重建机理及优化生态-生产范式"(G2000018601)资助
关键词
草原资源
地理信息系统
共享
Grassland resources
Geographic information system (GIS)
Sharing
