STEP - Conservation Status

The conservation status of each vegetation type in the Stepveg5 GIS layer (see Lombard, Wolf and Cole 2003). The conservation status was calculated based on the target area required for each feature, and the amount of that feature still remaining (the extant amount). Where a feature can no longer meet its targets (because of previous habitat transformation) it is classed as Critically Endangered. At the other extreme, a feature that has much more extant habitat than is needed to meet its target, is considered Currently Not Vulnerable. (See Cowling et al. 2003 for details) Purpose: Created for the Subtropical Thicket Ecosystem Planning Project, in order to identify spatial priorities for conservation action in the Thicket Biome.

Stepveg5地理信息系统（Geographic Information System，GIS）图层中各植被类型的保护现状（详见Lombard、Wolf与Cole，2003年）。该保护现状基于各植被要素所需的目标面积，以及该要素现存的剩余量（即现存量）计算得出。若某一植被要素因此前的生境改造已无法达成其设定目标，则将其归类为极危（Critically Endangered）；反之，若某一植被要素的现存生境远多于达成目标所需的规模，则视为目前无危（Currently Not Vulnerable）（详细研究细节参见Cowling等人，2003年的成果）。本数据集为亚热带灌丛生态系统规划项目（Subtropical Thicket Ecosystem Planning Project）所创建，旨在识别灌丛生物群区（Thicket Biome）内保护行动的空间优先级。