Title :
A Study on the Change of Wetland Landscape Pattern in Honghu City by Using 3S Method
Author :
Wang Huiliang ; Wang Xuelei ; Xiao Rui ; Mo Minghao
Author_Institution :
Inst. of Geodesy & Geophys., Chinese Acad. of Sci., Wuhan, China
Abstract :
In the paper, the TM (ETM) images of Honghu city in 1991 and 2001 have been interpreted by using 3S method. The patches, area, morphologic feature of different wetlands types have been analyzed. Then, the diversity index, dominance index, evenness index and fragmentation index have been calculated on the basis of landscape ecology theory and method. In addition, by using the wetlands dynamic model and relative change model, the dynamics of wetlands landscape of Honghu city from 1991 to 2001 have been analyzed and quantitative study was carried out. The result showed that the diversity index and fragmentation index had the ascending trend, but the dominance index had the downtrend. The wetlands area had the downtrend and the dynamics degree is -2.11%. Among the different land use/cover kinds in this region, the descending speed of lake is the biggest. The result of the study will guide people protect wetlands and utilize wetlands effectively.
Keywords :
ecology; environmental science computing; terrain mapping; 3S method; Honghu city; TM image; diversity index; dominance index; evenness index; fragmentation index; lake; land use-cover; landscape ecology theory; morphologic feature; quantitative study; relative change model; wetland landscape pattern; wetlands dynamic model; Biological system modeling; Cities and towns; Ecosystems; Environmental factors; Geodesy; Humans; Image analysis; Lakes; Protection; Rivers; 3S; Honghu City; landscape pattern; wetlands;
Conference_Titel :
Environmental Science and Information Application Technology, 2009. ESIAT 2009. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-0-7695-3682-8
DOI :
10.1109/ESIAT.2009.43
