| Technology and Methodology |
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FRACTAL RESEARCH ON DYNAMIC CHANGE OF THE BEIJING WILD DUCK LAKE WETLAND RESOURCES BASED ON GIS AND RS |
| ZHANG Zhi-feng1,2, GONG Hui-li2, ZHAO Wen-ji2, FUI Rui-hai3 |
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1. Beijing Municipal Environmentalitoring Center, Beijing 100044, China;
2. Beijing Municipal Environmental Monitoring Center, Beijing Lersity, Beijing 100037, China;
3. Wildlife Peoterction and Nature Protection Region Management Station, Beijing Forest Bureau, Beijing 100035, China |
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Abstract The theory and characteristics of the fractal theory are described. The wetland data of the Beijing Wild Duck Lake in 1998, 2000 and 2002 were obtained on the basis of RS and GIS technology. Using the fractal dimension numerical model on two dimensional Euclidean space, the authors worked out the fractal dimension values and the stability levels of all kinds of wetland resources. The dynamic changes of wetland resources in the study area was finally obtained according to the physical meaning of fractal dimension and the level of stability. The results of the study indicate that marshes and lakes constitute the most key elements and also the most unstable wetland elements in wetland environments. It has been proved in practice that fractal theory has ample application scope in the study of wetland dynamic change. The fractal dimension and the level of stability can supply the decision-making basis for the appraisal of wetland environments and the sustainable utilization of wetland resources.
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Issue Date: 02 August 2011
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2004,
Vol. 16
