四川省居民地分布特征知识发现研究  

Discovering the Knowledge of Residential Distribution of Sichuan Province Based on Spatial Database

作　　者：杨存建[1] 吴贵蜀[1] 倪静[1] 程武学[1] 

机构地区：[1]四川师范大学西南土地资源评价与监测教育部重点实验室遥感与GIS应用研究中心,四川成都610068

出　　处：《国土资源科技管理》2017年第6期73-81,共9页Scientific and Technological Management of Land and Resources

基　　金：国家科技支撑项目(2014BAL01B04);四川省教育厅重点项目(11ZA098)

摘　　要：基于空间数据库的居民地分布特征知识的发现对于优化居民地的空间布局具有重要意义。构建四川省居民地、DEM、坡度、多年平均年降雨量和年平均温度等空间数据库,提出了基于空间数据库的居民地分布特征知识发现的技术方法,发现了四川省居民地分布的高程、坡度、降雨和温度等特征知识。76.11%的居民地,分布在海拔在588m以下;80%的居民地分布在坡度1.4℃以下;97.6%的居民地分布在降雨量在778mm以上,96%的居民地分布在年平均温度在10.8℃以上。居民地分布面积随坡度的增加而呈指数式下降,其拐点在2度左右。居民地分布面积峰值所对应的海拔高度为500 m、年降雨量为926 mm、年平均温度为16℃。全省有40%的面积在海拔高程3 536m以上、坡度在18.5℃以上、年降雨量在777mm以下、温度在2.9℃以下,分布着少量的居民地,且很分散,配套基础设施建设成本高。因此,建议通过生态移民和土地整理,将生产生活条件特别差且难以改变的居民地退让于生态用地;促进分散居民地的适度集中,以便降低配套基础设施建设成本。Discovering the knowledge of the residential distribution of Sichuan province based on spatial database is very important for the optimizing space layout of residential area.In this paper,the spatial database is developed in Sichuan province,including the residential land data extracted from the raster data of land use of 2000,elevation,slope,multi-year average precipitation and annual average temperatures.The method of discovering the knowledge of residential land distribution from the spatial database was proposed here.The relationship of the residential land distribution and the elevation,the slope,the multi-year average precipitation and the annual average temperatures was discovered in Sichuan province by using this method.The results show that 76.11%residential land is distributed at the elevation blow 588 meters,80% residential land at the slope blow 1.4 degree,97.6% residential land in the area with average precipitation above 778mm,and about 96% residential land in the area with annual average temperature blow 10.8℃.The area of the residential land decreased with the slope increasing while it increased with elevation,annual average precipitation,annual average temperature increasing,and attained the peak which respectively corresponded to elevation of 500m,annual average precipitation of 926mm,annual average temperature of 16℃,and beyond the peak,the area of the residential land decreased with elevation,annual average precipitation,annual average temperature increasing.There is a little residential land distribution in the 40% of the whole Sichuan area,with elevation above 3536m,slope above 18.5℃,annual average precipitation below777 mm,annual average temperature below 2.9℃.It is advisable to convert the residential land with bad condition for life and production gradually into ecological land and concentrate the sparse resident land in order to reduce the cost for constructing basic facilities by using the ecological immigrant and the land consolidation.

关 键 词：居民地 空间数据库 知识发现 分布特征 

分 类 号：P208[天文地球—地图制图学与地理信息工程]