As a scientific way of land resources research

it should bo the toppriority to build up a general framework

i.e.

land classification system

which can imbody distribution and evaluation of land resources. In thiscase

common land features can be definited and described

and land typesspatially departed can be linked.Being a kind of renewable resources

landalways is in variation due to influence of social and natural conditions.Onlyland dynamic law was studied deeply

all land features can be ascertained and reasonable land use plan can be worked out. A series of romotelysensed data of multitimes

spectra and platforms supply abundant information to land resources investigation. It is one of the most importanttask in the future land research to give a full play of remote sensing potentialities.