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GIS for land evaluation for shrimp farming in Haiphong of Vietnam

机译：越南海防虾养殖土地评估的GIS

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摘要

This study was conducted to identify appropriate sites for shrimp farming development in Haiphong province of Vietnam using geographical information systems (GIS). Thirteen base layers (thematic maps) were grouped into four main land use requisites for aquaculturc, namely, (1) potential for pond construction (slope, land use type, soil thickness, eievation), (2) soil quality (soil type, soil texture, soil pH), (3) water availability (distance to sea, and water source), and (4) infrastructure and socio-economical status (population density, distance to roads, local markets, and hatcheries). A constraint layer was used to exclude areas from suitability maps that were not allowed to implement shrimp farming. A series of GIS models was developed to identify and prioritize the most suitable areas for shrimp farming. This study shows that the land evaluation model is useful for identifying suitable areas for shrimp farming and for allocating land for efficient income generation, effective conservation, and sustainable land management. It was estimated that about 31 % (2604 ha) of the total land area (8281 ha) in Haiphong was highly suitable for shrimp farming. Since existing shrimp farms cover only 1690 ha of land in the study area, the potential for expanding shrimp farms should take into consideration further political and environmental issues.
机译：这项研究的目的是使用地理信息系统（GIS）来确定越南海防省虾类养殖发展的合适地点。将十三层基础层（专题图）分为四个主要的水产养殖土地利用条件，即（1）池塘建设的潜力（坡度，土地利用类型，土壤厚度，平整度），（2）土壤质量（土壤类型，土壤）质地，土壤pH值），（3）可用水量（与海洋和水源的距离）和（4）基础设施和社会经济状况（人口密度，与道路，当地市场和孵化场的距离）。约束层用于从适合性地图中排除不允许实施虾类养殖的区域。开发了一系列GIS模型，以识别最适合虾类养殖的区域并确定其优先级。这项研究表明，土地评估模型对于确定适合虾类养殖的区域以及为有效创收，有效养护和可持续土地管理分配土地是有用的。据估计，海防市总土地面积（8281公顷）中约有31％（2604公顷）非常适合虾类养殖。由于现有对虾养殖场仅占研究区域1690公顷的土地，因此扩大对虾养殖场的潜力应考虑到进一步的政治和环境问题。

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