农用地定级综合评价中权重系数确定方法探讨_金晓斌.pdfVIP

() 44 　4 Vol.44, No.4 　　　JOU RNAL OF NANJING UNIVERSIT Y 　　　　 2008 7 July 2008 (NA TU RA L SCIENCES) ， ＊ 1 2 1＊＊ 金晓斌 , 张鸿辉, 周寅康 (1., , 210093;2., ,4 10083) 　:　, 、 , ., , 、, . , , , ., 、、 , , , , , . :　, , , :　F 323.2 11 A study of weight making methods for agricultural land gradation evaluation 1 2 1 J in X iao-B in , Zhang Hong-H ui , Zhou Yin-Kang (1.School of G ography and Oc an Sci nc s, Nanjing Univ rsity, Nanjing, 2 10093, China; 2.School of Info-Physics and G omatics Engin ring, C ntral South Univ rsity, Changsha, 410083, China) Abstract:　Agricultur land gradation is an important m thod for compr h nsiv agricultur land quality valuation. It focus s on d scribing th diff r nc of land output caus d by th practical or possibl quality of natural land and th l v l and ffici ncy of land us .Th valuation r sults ar comparabl in th county-l v l administrativ r gions. T og th r with agricultur land classification and appraisal, th agricultur land gradation is th k y factor in national r sourc inv stigation and is alway s tak n as a basis for th sstablishm nt of a unifi d land mark t and land r sourc allocation in China.According to th r lat d r gulations, agricultural land gradation is first calculat d by w ight d sum of indic s.Th n th gradation r sults ar classifi d by quidistanc , axis or sum fr qu ncy curv .Th r for , th prop r m thod for w ight making play s a critical rol in agricult