森林资源时空数据异步更新与回溯算法研究  

Study on Forest Resource Spatio-temporal Data Asynchronous Updating and Backtracking Algorithm

作　　者：杨思吉 吴保国[1] 

机构地区：[1]北京林业大学信息学院,北京100083

出　　处：《地理与地理信息科学》2014年第3期37-41,共5页Geography and Geo-Information Science

基　　金：国家高技术研究发展计划(863计划)课题(2012AA102003)

摘　　要：针对目前森林资源数据同步更新和更新后时空数据有效回溯的问题,通过改进传统的小班数据表和小班经营活动表,增加小班经营活动历史表,采用十字链表存储变化小班之间的关系,研究给出了森林资源空间数据和属性数据的异步更新和回溯算法,实现了小班数据的异步更新和动态回溯。As to forest resources＇ problems of synchronous updating and spatio-temporal data backtracking efficiently after updating,traditionary sub-compartment data table and sub-compartment management activity table＇s structure are improved,subcompartment management activity history table is added and relational data among changed sub-compartment are stored in cross list,asynchronous updating and backtracking algorithm of forest resources＇ spatial and attributive data are completed,based on the algorithm the function of sub-compartment＇s asynchronous updating and backtracking is completed by programming.

关 键 词：时空数据 异步更新 数据回溯 十字链表 

分 类 号：S757.2[农业科学—森林经理学] TP311.1[农业科学—林学]