Counties, MSA

County boundaries for the BES Metropolitan Study Area (MSA) derived from year 2000 GDT census data. This is the universal MSA boundary for all BES research. The MSA consists of the following 5 counties: Baltimore City, Baltimore County, Anne Arrundel, Carroll, Harford, and Howard. This is part of a collection of 221 Baltimore Ecosystem Study metadata records that point to a geodatabase. The geodatabase is available online and is considerably large. Upon request, and under certain arrangements, it can be shipped on media, such as a usb hard drive. The geodatabase is roughly 51.4 Gb in size, consisting of 4,914 files in 160 folders. Although this metadata record and the others like it are not rich with attributes, it is nonetheless made available because the data that it represents could be indeed useful.本数据集为基于2000年GDT人口普查数据导出的BES大都市研究区（Metropolitan Study Area, MSA）县域边界，该边界为所有BES研究通用的大都市研究区边界。本大都市研究区包含以下5个县域：巴尔的摩市、巴尔的摩县、安妮阿伦德尔县、卡罗尔县、哈福德县以及霍华德县。本元数据记录属于包含221条巴尔的摩生态系统研究（Baltimore Ecosystem Study, BES）元数据记录的集合，所有记录均指向一个地理数据库（geodatabase）。该地理数据库可在线获取，且体量庞大。经申请并达成特定协议后，可通过USB硬盘等存储介质寄送该数据库。该地理数据库总容量约为51.4吉字节，包含160个文件夹下的4914个文件。尽管本元数据记录及同类记录的属性信息并不丰富，但鉴于其所关联的数据具备实际应用价值，故仍予以公开。