GIS Shapefile - Vegetation for private lands, Baltimore City

Vegetation (trees and grass) for parcels defined as private land within Baltimore City. Private land parcels consisted of all those parcels with land use (LU) codes except for the category "Exempt Commercial" (EC). Roads had no LU codes. No parcels with the following LU codes were present in Baltimore City: agricultural (A), county club (CA), marsh land (MA), non-perc land (NP), and town house (TH). LU codes were determined from the Maryland Property View 2003 A&T database. A cursory analysis of the parcel data indicated that errors of omission were present due to insufficient parcel data in certain block groups. Vegetation data used in this analysis came from the MD DNR Forest Service IKONOS derived Strategic Urban Forest Assessment (SUFA) vegetation layer.

本数据集覆盖巴尔的摩市（Baltimore City）范围内被划定为私有土地的地块内的植被（树木与草本植物）。其中，私有土地地块指所有带有土地利用（Land Use, LU）编码，但未归入「豁免商业用地（Exempt Commercial, EC）」类别的地块。道路无对应LU编码。巴尔的摩市内不存在带有以下LU编码的地块：农业用地（Agricultural, A）、乡村俱乐部用地（County Club, CA）、沼泽地（Marsh Land, MA）、非渗透用地（Non-perc Land, NP）以及联排住宅用地（Town House, TH）。LU编码源自马里兰州物业视图2003年A&T数据库（Maryland Property View 2003 A&T database）。对本次地块数据的初步分析显示，受部分街区组地块数据不足的影响，存在遗漏类错误。本分析所使用的植被数据，取自马里兰州自然资源部（Maryland Department of Natural Resources, MD DNR）林务局基于IKONOS影像生成的城市战略森林评估（Strategic Urban Forest Assessment, SUFA）植被图层。