Dynamic Analysis of the Wetlands in Hulunbeier Region Based on Remote Sensing from 1999 to 2010
Abstract
We used TM data in 1999 and ETM data in 2002 and 2010 to explore the dynamic changes of Hulunbuir wetlands in recent 10 years, based on visual interpretation of wetland classifi cation and applying of computer automatic classifi cation techniques.The main results indicated that in recent 11 years, the wetland in this area was declined severely. The total wetland area was reduced to 3522.07 km2, and change rate was 36.5%. And among counties in the study area, most of decreased wetland area was in Chenbarag Qi and Xinbarag Youqi of Hulenbuir. The change of wetland included the wetlands converted to non-wetland and meadow marsh wetland converted to herbaceous marsh wetlands. The results revealed the degree of degradation of wetland in Hulunbeier, and provided basic data for future studies and policy makers in wetland protection and management.