基于矢量和栅格数据结构的土壤侵蚀强度判别方法研究-水土保持通报.PDF

22 1 V o l. 22 , N o. 1 2002 2 Bulletin of Soil a nd Wa ter Co nserv a tion Feb. , 2002 　 1 2 时新玲 , 李智广 ( 1., 7 12 100; 2. , 100053 　: ( , R S GI S Remo te Sensing and Geog raphic Info rmation System ,,。 ,、 ,。 , ,。 , 、 。 : ; ; ; ; : B　　　　　: 1000 - 288X ( 2002 0 1- 0034- 05　　　　　: S 157. 1 Methods of Differentiating Soil Erosion Intensity Between Vector and Raster Spatial Data Structure 1 2 SHI Xi n-ling , L I Zhi-guang ( 1. Northwest Sci-tech University of Agriculture and Forestry , Yangling 7 12100 , Shaanx i Province, China; 2. The Monitoring Center of Soil and Water Conservation, Ministry of Water Resources, eij ing 100053, China Abstract: The bo th special data structures, v ect or and rast er, are u sed i n surv eyi ng t he regi onal soil ero sio n surv ey and mapping soil ero sion int ensit y a tlas based on t he RS GIS ( Remo te Sensi ng and Geog raphi c In- f orma tion System . T he metho ds and t echniques w ere discu ssed , includi ng how carve up poly go ns , how t o capture t he v alues of facto rs o f im pressi ng soil ero si on , and how t o dif f erentiat e ero sion i ntensit y. Acco rding to the a nalysi s result s based o n the t w o speci al data st ruct ures , the t wo methods can both be used to estima te the soi l erosio n i ntensity , but each m ethod ha s its respectiv e characteri sti c. The m et