The dynamics change of natural wetland and constructed wetland and land use/land cover change process-modification were studied in Huolin River catchment. The results showed that the area of natural wetland was decreased and that of constructed wetland was increased

compared with 1980's; during the period of 1986 to 1996

it was general that there existed modification process between other types of wetlands except river wetland

where the modification process of marsh wetland was most notable

with the tendency of decreasing; but as for river beach

lakes

reservoir and paddy field

their modification processes showed the tendency of increase; there nearly existed modification process between all types of wetlands during the period of 1996 to 2000

but what is different is that marsh wetland areas showed the tendency of increase

and all of the areas of river beach

lakes

reservoir and paddy field showed that of decrease during the course of modification processes; moreover

paddy field had modification relationship with mash

river beach

lake and reservoir in this period

manifesting that the scope of human activity was extending and the wetland area reclaimed was increasing.