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基于GIS的黄河三角洲地区苜蓿生态适宜性评价——以垦利县为例
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摘要:
以Arcview和Arc/info为基本工具,以垦利县为代表,建立黄河三角洲地区苜蓿生产环境数据库.采用Arcview管理空间数据,Visual Foxpro管理属性数据,二者通过公共字段共享数据,实现了属性数据与空间数据无缝链接;并按照均匀一致的原则,以1∶5万地形图为基础,将研究区域划分为2 312个1 km×1 km的网格(评价单元),选取21个相关指标,采用因子分析法对该地区苜蓿生态适宜性进行评价,生成相应的分区图,并对苜蓿生态适宜性的空间分布做了分析.该评价系统克服传统的评价工作中忽略社会经济因素的价值和作用的缺陷,并根据地域特征,把区位指标引入评价系统中,使得该评价结果更全面、更科学.
关键词:  GIS  数据库  苜蓿  生态适宜性  评价
DOI:
投稿时间:2006-07-04
基金项目:山东省重大科技专项基金
Ecology suitability evaluation of Alfalfa in Yellow river delta based on GIS——A case of Kenli county
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Abstract:
Ecology environment database of Alfalfa in Yellow river delta(a case of Kenli county)was established on Arcview Gis and Arc/info technology.Spatial database was managed by Arcview Gis and shared with attribute database managed by Visual Foxpro through common field.According to homogeneous principles,the region was divided into 2312 grids(evaluating units),1 square kilometer each gird.Twenty-one indexes were selected and principle component analysis method was adopted in ecology suitability evaluation system, so that classified map and spatial distribution for ecology suitability of Alfalfa were generated.The value of social and economic factors,usually ignored in traditional evaluating system,was considered.Moreover,position indexes were introduced for region characteristic,all of which made the results more scientifically comprehensive.
Key words:  GIS  database  Alfalfa  ecology suitability  evaluation

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