基于 BP 人工神经网络算法的临沂市土地利用集约状况探析

摘要

通过对2009—2012年度临沂市9县3区统计年鉴和变更调查中11个相关指标数据的搜集，借助 MATLAB7．0软件平台，利用 BP 人工神经网络算法，算出2009—2012年度各县区土地利用集约度，并利用 BP 人工神经网络的预测功能，预测了2013年和2014年度土地利用集约度值，结果表明临沂市平均土地利用集约度水平正逐步从粗放利用发展到中度集约，兰山区土地利用集约度水平一直为高度集约，集约度居全市之首，罗庄区一直为中度集约，稳中有进。预计到2014年底，大部分县区在中度集约或以上，仅有费县、蒙阴2县为粗放利用。。%Through study on yearbook from 2009 to 2012 of 9 cities and 3 counties in Linyi city,and 11 indexes relat-ed to statistical data in change survey,with the help of MATLAB7.0 software,using BP artificial neural network algo-rithm,land use intensive degree of all cities and counties from 2009 to 2012 have been calculated.By using predic-tion function of BP artificial neural network,annual land use intensity values in 2013 and in 2014 have been forecas-ted.It is showed that the average level of land use intensive degree in Linyi city is gradually developing from exten-sive utilization to moderate intensive utilization.Land use in Lanshan district has been highly intensived,and inten-sive degree is the first in Linyi city;while land use in Luozhuang district is moderate intensive,but is developing sta-blely.It is expected that the land use in Linyi city will be moderate intensive utilization even intensive utilization but Feixian county and Mengyin county by the end of 2014.