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基于RS和GIS的中尺度流域土地利用空间结构变化——以伊洛河流域中部洛宁县为例

Spatial Structure Change of Land Use on Middle-Sized Basin Based on RS and GIS——A Case Study of Luoning County in Central Yiluohe Basin

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【作者】 常捷李慧典黄裕婕李斌刘静玉

【Author】 CHANG Jie 1, LI Hui dian 2, HUANG Yu jie 3, LI Bin 1, LIU Jing yu 1 (1. College of Environment and Planning, Henan University, Kaifeng 475001, China; 2. Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450002, China; 3. Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China)

【机构】 河南大学环境与规划学院信息工程大学测绘学院清华大学水利工程系河南大学环境与规划学院 河南开封475001河南郑州450052北京100084河南开封475001河南开封475001

【摘要】 选择伊洛河流域中部洛宁县为研究区域 ,运用RS和GIS技术 ,分别提取研究区 1 987和 1 999年以地貌类型为单元的土地利用数据绘制罗伦兹曲线。结果表明 :1 987~ 1 999年 ,各地类在各类地貌单元的集中与分散程度的整体状况未发生变化 ,其分布的集中程度依次为建设用地 >水域 >林地 >耕地 >未利用土地 ;但集中和分散程度发生明显变化 ,其中林地分布趋于集中 ,耕地、水域和未利用土地趋于分散 ,而建设用地基本没有变化 ,其原因主要是该时段川涧区林地大幅度增加 ,而其它地貌单元林地面积大量减少所致

【Abstract】 Lorenz curves are mapped using the land use data based on geomorphologic types in Luoning County, a chosen research area in central Yiluo River basin. These data are obtained by applying RS and GIS technology. The study shows that during 1987~1999 the distributive pattern in terms of concentrative degree of land use based on geomorphologic types in Luoning County remains unchanged: construction land > water area > woodland > cultivated land > unused land. The research also shows that the concentrative degrees of land use have changed obviously in spite of unchanged distributive pattern in terms of concentrative degree of land use. The woodlands distribution are more concentrative than before. But the cultivated land, water area and unused land tend to scatter. And the construction land are almost unchanged. The reason is that the woodland in areas with the elevation less than 400 m has increased by a big margin, while has decreased in a great quantity in other areas.

【关键词】 土地利用空间罗伦兹曲线RSGIS流域洛宁县
【Key words】 land usespatial Lorenz CurveRSGISbasinluoning county
【基金】 河南省杰出青年基金 ( 0 112 0 0 170 0和 992 0 ) ;河南省自然科学基金 ( 0 0 40 70 70 0 )
  • 【文献出处】 测绘学院学报 ,Journal of Institute of Surveying and Mapping , 编辑部邮箱 ,2004年01期
  • 【分类号】P208;F301.24
  • 【被引频次】18
  • 【下载频次】337
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