Connotation and expression of soil erosion information tupu
DUAN Zheng-Song-；Chang-Qiang-Rui
1.College of Resources and Environment,Northwest A & F University,712100,Yangling,Shaanxi;2.Guangxi Institute of Land Surveying and Mapping,530023,Nanning:China
Abstract：Based on the analysis and summary of research progresses in Geo-information tupu,the concept of soil erosion information tupu and the connotation of three basic types information tupu that contain soil erosion types,spatial pattern of soil erosion,processes of soil and water loss are expounded.In this paper,the construction process of soil erosion information tupu is discussed,contents and ways of the expression are proposed,and the signification and developmental perspective of soil erosion informatic tupu were described also.
2009, Vol. 7 
