Is shrimp farming a successful adaptation to salinity intrusion? A geospatial associative analysis of poverty in the populous Ganges-Brahmaputra-Meghna Delta of Bangladesh.
Is shrimp farming a successful adaptation to salinity intrusion? A geospatial associative analysis of poverty in the populous Ganges-Brahmaputra-Meghna Delta of Bangladesh.
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DOI：
10.1007/s11625-016-0356-6
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发表时间：
2016
影响因子：
6
通讯作者：
Mukhopadhyay A
中科院分区：
文献类型：
--
作者：
Amoako Johnson F;Hutton CW;Hornby D;Lázár AN;Mukhopadhyay A
孟加拉国的恒河-雅鲁藏布江-梅格纳三角洲是世界上人口最多的三角洲之一，养活了多达1.4亿人。该三角洲受到包括盐度入侵在内的各种环境压力的威胁，对生计和健康造成了不利影响。对虾养殖被认为是适应快速盐碱化三角洲影响的为数不多的经济适应措施之一。尽管盐碱入侵和养虾在地理上位于三角洲，但还没有系统的研究来检查它们与贫困的地理空间联系。在本研究中，我们利用人口普查、陆地卫星影像和土壤盐分调查数据等多种数据来源，研究三角洲地区贫困的地理空间集聚程度及其与盐分强度和对虾养殖的关联关系。这项分析是在工会一级进行的，工会是孟加拉国最低的地方政府行政单位。研究结果表明，三角洲地区的贫困有很强的聚集性，尽管不同程度的盐碱化与贫困的增加显著相关，但海水或淡水对虾养殖与贫困都没有明显的联系。这些发现表明，尽管养虾可能会带来经济增长，但就目前的形式而言，它并不是对三角洲贫困和边缘化地区的有效适应。这项研究表明，三角洲地区存在一系列贫困驱动因素，包括盐碱化、内涝、湿地/泥滩、就业、教育和道路使用等，这些因素在空间上是显而易见的，这表明三角洲地区的扶贫方案需要加强针对具体地区的有针对性的干预措施。本文的在线版本(doi：10.1007/s11625-016-0356-6)包含补充材料，授权用户可以使用。
The Ganges–Brahmaputra–Meghna delta of Bangladesh is one of the most populous deltas in the world, supporting as many as 140 million people. The delta is threatened by diverse environmental stressors including salinity intrusion, with adverse consequences for livelihood and health. Shrimp farming is recognised as one of the few economic adaptations to the impacts of the rapidly salinizing delta. Although salinity intrusion and shrimp farming are geographically co-located in the delta, there has been no systematic study to examine their geospatial associations with poverty. In this study, we use multiple data sources including Census, Landsat Satellite Imagery and soil salinity survey data to examine the extent of geospatial clustering of poverty within the delta and their associative relationships with salinity intensity and shrimp farming. The analysis was conducted at the union level, which is the lowest local government administrative unit in Bangladesh. The findings show a strong clustering of poverty in the delta, and whilst different intensities of salinization are significantly associated with increasing poverty, neither saline nor freshwater shrimp farming has a significant association with poverty. These findings suggest that whilst shrimp farming may produce economic growth, in its present form it has not been an effective adaptation for the poor and marginalised areas of the delta. The study demonstrates that there are a series of drivers of poverty in the delta, including salinization, water logging, wetland/mudflats, employment, education and access to roads, amongst others that are discernible spatially, indicating that poverty alleviation programmes in the delta require strengthening with area-specific targeted interventions. The online version of this article (doi:10.1007/s11625-016-0356-6) contains supplementary material, which is available to authorized users.
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影响因子：
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