摘要
在广泛调查与试验分析蔬菜硝酸盐污染控制技术的基础上,以MicrosoftAccess2000/VisualBasic6.0作为主要开发工具,利用美国ESRI公司组件式GIS开发工具MapObjects2.0作为建立GIS数据库及进行空间分析的基本软件平台,以长沙市郊主要蔬菜生产基地硝酸盐污染控制为例,实现适合湖南省区域生态条件的基于GIS的蔬菜硝酸盐污染控制信息系统。
Nitrate in vegetables is harmful to human health. So, based on the widely investigating and experimental analysis of vegetable nitrate pollution, a COM GIS-based Vegetable Nitrate Control Information System was developed relying on Microsoft Access 2000, Visual Basic 6.0 and ESRI MapObjects 2.0. This system was checked with an example of vegetable nitrate pollution control in the suburb of Changsha city, Hunan province and helped realize the control of vegetable nitrate pollution according to the local eco-conditions. Some basic GIS functions, such as map zooming in, zooming out, panning and spatial query functions-identifying and finding, etc were implemented in this system. Especially, this system was in-built functions aiming at vegetable nitrate information. Vegetable and soil nitrate contents about each sampling point all around Hunan province could be identified and queried by its spatial querying ability, and a judgment was made whether the nitrate content was in excess of the national standards. Also, based on simulating models and expert knowledge and GIS＂ spatial analytic and querying functions, vegetable nitrate content could be forecasted about each place in vegetable garden within Changsha district, so did the information of vegetable nitrate-overrunning-standard, and at the same time, rational advice about vegetable planting for lightening or controlling nitrate pollution would be given by this system.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2007年第1期391-394,共4页
Journal of Agro-Environment Science
基金
湖南省科技厅资助项目(02SSY3033)
省农业厅资助项目(G1998010203)
关键词
蔬菜硝酸盐
GIS
污染控制
信息系统
vegetable nitrate
GIS
pollution controlling
information system
