格网GDP空间分布更新模型研究

在地理信息系统中,引入格网化的GDP能够反映某一阶段内经济数据的空间分布状况,可为区域发展提供及时的科学数据和决策依据。本文阐述了建立格网GDP更新模型的必要性和可行性。在分析格网GDP更新的关键基础上,以简单比例模型和环境要素面积模型为蓝本,提出了一种按行政单元多边形不同区域分别进行处理的更新模型,并给出了实现更新的基本框架。经过验证,这种分区域处理的格网GDP更新模型在运算精度、运算复杂度、可操作性之间具有良好的平衡,可作为规则格网GDP更新的一般模型。

Updating model for the spatial distribution of the grid-based GDP

In the GIS,the introduction of grid-based GDP can not only reflect the spatial distribution of the socioeconomic statistics over a period of time,but also provide more accurately scientific data and decision-making gist to develo Pthe territorial economy.This paper expounded the necessity and feasibility of the grid GDP update model in the GIS.Basing on the analysis for the key part of grid GDP update,this paper brought forward a grid GDP update model based on administrative polygon borders according to the simple scale model and the environmental terms'area scale model,and offered the basal frame to realize it.Experimentation proved that the grid GDP update model based on administrative polygon borders has a good balance among computing precision,computing complexity and operability,and this model could provide an efficient tool for evaluation and emergency systems.