Based on the theory of landscape ecology

it analyses the processes of wetland changes in middle-lower reaches of Taoer river between the year of 1986

1996

2000

and discusses the characteristic of wetland change in its quantity and wetland landscape pattern's dynamic

the driving forces also. It pointes that wetland represents apparently declining trend in quantity and scope in recently ten years over

with natural wetland's transformation to artificial. Hydrological factor is direct cause of wetland's change

and natural and artificial factors affect it by different intension and manner.