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首页> 外文期刊>Land Degradation and Development >ANALYSIS OF LAND USE AND LAND COVER CHANGES IN THE COASTAL AREA OF BANGLADESH USING LANDSAT IMAGERY
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ANALYSIS OF LAND USE AND LAND COVER CHANGES IN THE COASTAL AREA OF BANGLADESH USING LANDSAT IMAGERY

机译：基于LandSAT影像的孟加拉国沿海地区土地利用与土地覆盖变化分析。

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Coastal land use across the globe has experienced remarkable rapid change over the recent decades because of extraordinary anthropogenic pressure and climate variability and change. Therefore, quantitative information about coastal land use change is imperative for effective management and planning resources for sustainable development. We analysed the quantitative land use and land cover changes during 1989-2000-2010 periods in three important agroecological zones of the most vulnerable coastal region of Bangladesh using Landsat images (Thematic Mapper/Enhanced Thematic Mapper Plus). In the Ganges Tidal Floodplain, the area under shrimp cultivation greatly increased at the rate of 2.05% per annum. The majority of the shrimp area gained from conversion of single cropland. In the Meghna Estuarine Floodplain, decreased mudflat and water bodies were observed, which was predominantly converted into cropland. In Chittagong Coastal Plain, salt pan-shrimp area increased with the expense of single and/or double cropland. In all the study areas, settlement area considerably increased over time. The dynamics of land use change have been attributed to low and unstable food production in the coastal region. The approach adopted in study and the results obtained from the study would likely be useful for policy making and identifying direction for future studies on the coastal land use in Bangladesh. Copyright (C) 2015 John Wiley & Sons, Ltd.
机译：由于人为压力过大，气候多变性和多变，近几十年来全球沿海土地利用发生了显着的快速变化。因此，关于沿海土地利用变化的定量信息对于有效管理和规划可持续发展资源至关重要。我们使用Landsat影像（Thematic Mapper / Enhanced Thematic Mapper Plus）分析了孟加拉国最脆弱的沿海地区的三个重要农业生态区在1989-2000-2010年期间的定量土地利用和土地覆盖变化。在恒河潮滩，虾类养殖面积以每年2.05％的速度大大增加。对虾面积的大部分来自单一农田的转化。在Meghna河口洪泛区，观察到滩涂减少和水体减少，其中主要转变为农田。在吉大港沿海平原，盐田虾的面积随着单田和/或双田的损失而增加。在所有研究区域中，定居区域随着时间的流逝而显着增加。土地使用变化的动态归因于沿海地区粮食生产低迷和不稳定。研究中采用的方法和从研究中获得的结果将可能有助于制定政策并确定孟加拉国沿海土地利用未来研究的方向。版权所有（C）2015 John Wiley＆Sons，Ltd.

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