摘要
介绍了海河流域碳、氮、硫、磷及生态环境数据库的建库目标,指导系统分解的概念模型,选择录入数据的指标体系,数据库系统构成及所含6个子库典型输出表。做为数据库的必要功效补充,还建立了地理信息系统。整个数据库系统是在DBASE-Ⅲ、汉化地理信息系统工具和FORTRAN-77统计与模式程序包支持下,在PC/AT微机上实现的。
The object analysis, the concept model, the index system and the system components of an eco-environmental database system for C,N, S and P cycles in Haihe River basin of China are introduced in this paper. The six sub-database are also illustrated. The whole system was developed using dBASE Ⅲ,Chinese-CIS tool and FORTRAN-77 statistical package on a PC/AT microcomputer. A geographical information system (GIS) was also attached to the system as an essential complement of the database.
出处
《环境科学学报》
CAS
CSSCI
CSCD
北大核心
1991年第2期157-165,共9页
Acta Scientiae Circumstantiae
关键词
数据库
生态环境
碳
氮
硫
磷
database, Haihe River basin, C, N, S, P cycle.
