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| Analysis of conservation effectiveness of wetland protected areas based on remote sensing in West Songnen Plain |
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Abstract In this study, the national wetland nature reserves in West Songnen Plain were chosen as the research object, and remote sensing images (Landsat MSS/TM/OLI) were used to obtain the basic information of wetland. Minimum mean square deviation, variation coefficient, landscape metrics, information entropy model, GIS spatial analysis and landscape development intensity index were applied to explore the conservation effectiveness of wetland protected areas and driving factors. Results of this study showed that it was a generally decreasing trend for the conservation effectiveness of protected areas during 1987-2013. The disturbance of human activities on protected areas was increasing between 1987 and 2013. The significant negative correlation between the landscape development intensity index and conservation effectiveness suggested that human activities should be associated with low conservation effectiveness for protected areas. 63.71% and 21.69% of degraded wetlands was converted to farmland and grassland, respectively. The warming and drying climatic trends as well as the influence of human activities were contributed to the decrease of conservation effectiveness. Especially, converting wetlands to farmland and constructing hydraulic engineering accelerated wetland degradation. Finally, the aspects on which should be focused by the managers and governors in the future and the deficiencies existed in this study were discussed.
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Received: 28 May 2014
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