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Buffering functions of mangroves in the 2004 tsunami

International Journal of Digital Earth 2009年第3期2卷 257-274页

作者： T.J.Oyana W.Sun P.Sirikulchayanon Department of Geography&Environmental Resources Southern Illinois University1000 Faner DriveCarbondaleIL 62901USA Department of Geography and Planning Grand Valley State University1 Campus DriveAllendaleMI 49401USA

The complex nature of coastal ecosystems and their protection require a deeper understanding of land cover change and *** a number of ecological studies have been conducted to realise this important objective,little information is available regarding the quantification of this land cover *** role of mangroves as living barriers was under appreciated prior to the 2004 tsunami *** this paper,we investigate the buffering functions of mangroves in the 2004 tsunami by employing the methodology developed in our companion *** focus more on mangrove distribution patterns in different buffer zones before and after the 2004 *** presence of mangroves before and after the event was statistically significant for the North(χ^(2)=154.08,p50.001)and Upper South(χ^(2)=62.25,p50.001).We observed positive linear relationships suggesting a loss of mangrove resulted into a gain of barren and sand land cover as a result of a devastating impact from the 2004 tsunami *** are pockets of inland tsunami inundations and penetrations in the North and Upper-South in part owing to the river mouth profiles and dense mangrove *** the North and Upper South Regions of the study area with large mangrove forest areas suffered slight damages,these regions put up a strong buffer against the tsunami suggesting that mangrove forests play a significant role in shoreline protection.

关键词： tsunami mangrove distribution land cover change coastal ecosystem proximity analysis chi-square analysis

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