GIS Shapefile - Counties, MSA - County boundaries within the BES Main Study Area.

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 Baltimore Ecosystem Study metadata records that point to a geodatabase. The geodatabase itself is available online at beslter.org or lternet.edu. It is considerably large. Upon request, it can be shipped to you on media, such as a flash 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.

本数据集包含基于2000年GDT人口普查数据生成的BES大都市研究区（Metropolitan Study Area, MSA）的县界矢量数据。本数据集为适用于所有BES研究的通用MSA边界数据。该大都市研究区涵盖以下5个县：巴尔的摩市、巴尔的摩县、安妮阿伦德尔县、卡洛尔县、哈福德县及霍华德县。本数据集属于巴尔的摩生态系统研究（Baltimore Ecosystem Study, BES）元数据记录集合的一部分，该系列元数据均指向一个地理数据库（geodatabase）。该地理数据库可通过beslter.org与lternet.edu在线获取，其体量较大。若有需求，可通过闪存盘等存储介质向您寄送完整数据。该地理数据库总容量约为51.4吉字节（Gb），包含160个文件夹下的4914个文件。尽管本元数据记录及同类元数据的属性信息并不丰富，但鉴于其所代表的数据具备实际应用价值，仍予以公开。