| 摘要: |
| 作者利用不同时段的遥感影像、数字化地形图和历史航空相片, 在地理信息系统平台上提取广西海岸滩涂的变化资料,并对其进行分析。结果表明,近50 a来广西海岸滩涂的变化特征为:滩涂面积经历了由加速递减(1955～1977年)、滩涂面积变化基本不变(1978～1988年)到滩涂面积再次递减的 3个阶段(1988年以来),其中滩涂面积变化最大的是沙砾质滩涂,其次是红树林滩涂,这两类滩涂面积减少最多、递减速率最快。 |
| 关键词: 滩涂 特征分析 广西海岸 遥感和GIS(Geographical Information System,GIS) |
| DOI： |
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| 基金项目:广西科学基金资助项目（0448039） |
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| Analysis on the characteristics of changeable intertidal zones along Guangxi coast in the late of 50 years |
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| Abstract: |
| Changeable data in the spatial and temporal spans were obtained on the platform of the geographical information system by using different satellite remote sensing data, digital topography maps and historic airplane photos, which were further analyzed. The results showed that: the total intertidal zones along Guangxi coast decreased in recent 50 years, which abruptly decreased from 1955 to 1977, basically were invariable from 1978 to 1998 and have decreased since 1998. Moreover, the change of the sand-gravel tidal flat was biggest among the whole tidal flat types, the change of the mangrove tidal flat is next, and these two types decreased mostly and their decreased degrees were fast. |
| Key words: mud-flat characteristic analysis Guangxi coast remote sensing and GIS |
