Data for: Can we locate shrimp aquaculture ponds from space? – A case study for Thailand

This shapefile (generated with ArcGis Desktop Version 10.8) contains the identified water areas in Thailand that have a high likelihood to be a shrimp pond and the identified land cover change. -9999 = NoData Pond 1= Shrimp water area 2= Non-Shrimp water area Farm_Unit = Identification number of the corresponding "farm unit" Water_Cat =Water category obtained from the global water surface explorer (Pekel, J.-F.; Cottam, A.; Gorelick, N.; Belward, A. S., High-resolution mapping of global surface water and its long-term changes. Nature 2016, 540, 418.) 1=Permanent 2=New permanent 4=Seasonal 5=New seasonal 7=Seasonal to permanent 8=Permanent to seasonal 9=Ephemeral permanent 10=Ephemeral seasonal Coastal = defines the location 1 = inland region 2 = costal region Area_km2 = Area of the related polygon in km2; measured by using the WGS 1984 World Mercator projection. Forest_km2 = “primary forested land” area in km2, that has potentially been converted by shrimp pond construction NFores_km2 = “primary non-forested” area in km2, that has potentially been converted by shrimp pond construction NPrima_km2 = “non-primary land” area in km2, that has potentially been converted by shrimp pond construction likelihood = Attributed shrimp pond water area likelihood class Class 1 has the comparably lowest likelihood to be a shrimp pond and class 3 has the comparably highest likelihood to be a shrimp pond.本数据集为使用ArcGIS Desktop 10.8版本生成的形状文件（Shapefile），包含泰国境内被识别出的极有可能为虾塘的水域，以及已识别的土地覆被变化信息。 -9999 代表无数据（NoData）。 Pond（池塘类型字段）： 1= 虾塘水域 2= 非虾塘水域 Farm_Unit（养殖单元标识号字段）：对应"养殖单元"的唯一识别编号。 Water_Cat（水域类别字段）：水域类别源自全球水面探测器（Global Surface Water Explorer），引用文献为：Pekel, J.-F.; Cottam, A.; Gorelick, N.; Belward, A. S. High-resolution mapping of global surface water and its long-term changes. Nature 2016, 540, 418. 其类别取值如下： 1= 永久性水域 2= 新增永久性水域 4= 季节性水域 5= 新增季节性水域 7= 季节性水域转为永久性水域 8= 永久性水域转为季节性水域 9= 暂时性永久性水域 10= 暂时性季节性水域 Coastal（区位标识字段）：用于定义多边形的所在区位，1= 内陆区域，2= 沿海区域。 Area_km2（面积字段，单位：平方千米）：对应多边形的面积，采用WGS 1984世界墨卡托投影进行测算。 Forest_km2（原生林面积字段，单位：平方千米）：指因虾塘建设可能被占用的原生林地面积。 NFores_km2（原生非林地面积字段，单位：平方千米）：指因虾塘建设可能被占用的原生非林地面积。 NPrima_km2（非原生土地面积字段，单位：平方千米）：指因虾塘建设可能被占用的非原生土地面积。 likelihood（虾塘水域可能性等级字段）：为虾塘水域的归属可能性分级，其中等级1为虾塘归属可能性最低的类别，等级3为虾塘归属可能性最高的类别。