基于RS和GIS的松辽平原黑土信息提取  

Extracting phaeozem information in Songliao Plain based on remote sensing and GIS

作　　者：邢宇[1] 姜琦刚[1] 李远华[1] 崔瀚文[1] 林楠[1] 

机构地区：[1]吉林大学地球探测科学与技术学院,长春130026

出　　处：《农业工程学报》2010年第10期212-217,F0004,共7页Transactions of the Chinese Society of Agricultural Engineering

基　　金：中国地质调查局资助项目(1212010510613)

摘　　要：为保护黑土资源并使其可持续利用,基于ASTER数据采用多元逐步回归方法估算了黑土有机质含量,利用决策二叉树方法和DEM数据等提取了黑土信息。结果表明:基于ASTER数据可快速有效地提取黑土信息;当土壤有机质质量分数低于2%时,估算有机质的模型精度受到土壤反射特性的制约而误差较大;在GIS支持下充分利用辅助信息可提高黑土的提取精度,使提取的黑土信息更准确可靠;根据研究得到松辽平原黑土带北起黑河市,南至昌图县,现有黑土总面积51360.15km2,其中黑龙江、吉林、辽宁省的黑土面积依次递减,分别是35377.43、12511.71和2775.46km2,而且黑土有机质含量随经度或纬度的增加呈现出逐渐升高的趋势。该研究对黑土信息的快速提取、黑土资源的保护和可持续利用、区域农业可持续发展均具有重要意义。In order to protect and make sustainable use of phaeozem resources,based on ASTER data,the organic matter content information of phaeozem was quantitatively obtained by using multiple stepwise regression method and meanwhile,decision-binary tree method and DEM data were adopted to extract the phaeozem information in Songliao Plain.The results showed that ASTER data could be used to extract related information about phaeozem quickly and efficiently.When the soil organic matter content was less than 2%,the model estimation accuracy could not meet the need because of the soil reflective properties.With the help of GIS,auxiliary information could improve the precision of phaeozem extraction and make the phaeozem information more accurate and reliable.The phaeozem primarily lied in the area from Heihe City in the north to Changtu Country in the south and covered an area about 51 360.15 km^2 in Songliao Plain.The area of phaeozem in Heilongjiang,Jilin,Liaoning Province were decreasing correspondingly with the size of 35 377.43,12 511.71 and 2 775.46 km^2,respectively.And the phaeozem organic matter content is gradually increasing along with latitude and longitude becoming high.The study is of great significance for rapid extraction of phaeozem information,protection and sustainable use of phaeozem resources as well as sustainable development of regional agriculture.

关 键 词：边界条件 遥感 地理信息系统 黑土 有机质 定量分析 松辽平原 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]