基于RS、GIS村域农田数据库设计研究——以河南省吴沟村为例

以河南省巩义市吴沟村为例,以卫星遥感图像为建库数字化参照依据,采用目视解译方法,利用ERDAS Imangine 8.6和MapInfo Professional 7.0 SCP为数据库平台,依次提取出旱地梯田、旱坡地、菜地、退耕还林地等不同图层的田块,根据分析处理要求,针对农田系统的特征进行数据结构设计,建立相应的农田空间数据库;以2008年4月以及2002年4月两次对吴沟村全体农户的实地调查为基础,建立农田各种形式的投入、产出能量数据库.完成的数据库可以实现如下功能:①数据浏览与操作功能,如对农田系统信息的放大、缩小、漫游、全图等以及时全村现有482块农田地块的查看和修改:②数据管理和维护,如时吴沟村农田数据进行条件查询、SQL查询、Mapbagic程序查询等.③数据转入和转出,可以将Mapinfo下的农田数据转入或转出到其他GIS软件中,扩展该农田数据库的使用范围.图5,表1,参11.

Design of the Village-level Farmland System Database Based on RS and GIS

Taking Wugou Village in Gongyi He' nan province as an example, this paper establishes a digital database in reference to Google Map Satellite Images. Sevend methods were used including visual explanation,extract plots from different image layers,such as arid terrace,add hill-side field, vegetable soils,grain for green land and so on,based on ERDAS Imagine 8.6 and Maplnfo Professional 7.0 SCP platform.Then,the data structure aiming at features of fanaland system was designed according to analytical processing request, and relative farmland spatial database was established.Based on twice empirical investigation of the whole rural households at Wngou Village in April 2002 and April 2008,the paper establishes a funnland database with a variety of input and output energy. The completed database can realize the following function:scope of the farmland database.