The Wetland Dynamic Monitoring Of Panjin Based On Landsat Remote Sensing Data

Wetland,as a natural ecological system,has significant ecological function and economical benefit.Since 1950s,the area of wetland has been shrinking and its ecological function has gradually degraded under the influence of human activities and environmental degradation.Therefore,the moment,Wetland Dynamic Change Monitoring Research exploits great scientific significance in protecting wetland.No one would about the importance of Panjin wetland,which is an vital ecological barrier in Northeast district.This paper studies the wetland in Panjin city,based on ETM + in 2002,TM in 2007,and OLY three remote sensing image data in 2014,with remote sensing technology,employing the decision tree classification method.This paper base on Landsat Image spectral characteristics and the tasseled cap transform data,combines environment characteristics and spatial geometric feature information of different wetlands,according to the first partition and classification of thought to construct the decision tree classification model,access to the three period in Panjin Welland Landscape information,and using a confusion matrix method for extraction accuracy evaluation results.The overall classification accuracy reached 84.75%.Based on the results of three stage wetland information extraction,using landscape ecology and transfer matrix model.The wetland spatial pattern,landscape pattern and evolution characteristics were qualitatively and quantitatively analyzed.And the driving force factors of Wetland Dynamic Change in Panjin were analyzed.The results show that,the total area of wetland in the study area showed a small increase in the trend,which is the largest of the artificial wetland in the paddy field area since 2002.The wetland types in the study area are mainly paddy field and marsh wetland.The evolution of wetland landscape pattern trends to be patch fragmentation and spatial distribution.During the study period,the wetland has experienced a complex evolution progress,mostly from artificial wetland into non-wetland.