National Fish Habitat Action Plan (NFHAP) 2010 HCI Scores and Human Disturbance Data (linked to NHDPLUSV1) for Pennsylvania

This shapefile contains landscape factors representing human disturbances summarized to local and network catchments of river reaches for the state of Pennsylvania. This dataset is the result of clipping the feature class 'NFHAP 2010 HCI Scores and Human Disturbance Data for the Conterminous United States linked to NHDPLUSV1.gdb' to the state boundary of Pennsylvania. Landscape factors include land uses, population density, roads, dams, mines, and point-source pollution sites. The source datasets that were compiled and attributed to catchments were identified as being: (1) meaningful for assessing fish habitat; (2) consistent across the entire study area in the way that they were assembled; (3) representative of conditions in the past 10 years, and (4) of sufficient spatial resolution that they could be used to make valid comparisons among local catchment units. In this data set, these variables are linked to the catchments of the National Hydrography Dataset Plus Version 1 (NHDPlusV1) using the COMID identifier. They can also be linked to the reaches of the NHDPlusV1 using the COMID identifier. Catchment attributes are available for both local catchments (defined as the land area draining directly to a reach; attributes begin with "L_" prefix) and network catchments (defined by all upstream contributing catchments to the reach's outlet, including the reach's own local catchment; attributes begin with "N_" prefix). This shapefile also includes habitat condition scores created based on responsiveness of biological metrics to anthropogenic landscape disturbances throughout ecoregions. Separate scores were created by considering disturbances within local catchments, network catchments, and a cumulative score that accounted for the most limiting disturbance operating on a given biological metric in either local or network catchments. This assessment only scored reaches representing streams and rivers (see the process section for more details). Please use the following citation: Esselman, P., D.M. Infante, L. Wang, W. Taylor, W. Daniel, R. Tingley, J. Fenner, A. Cooper, D. Wieferich, D. Thornbrugh and J. Ross. (April 2011) National Fish Habitat Action Plan (NFHAP) 2010 HCI Scores and Human Disturbance Data (linked to NHDPLUSV1) for Pennsylvania. National Fish Habitat Partnership Data System. http://dx.doi.org/doi:10.5066/F7DJ5CMC

本形状文件（shapefile）包含表征人为干扰的景观因子，这些因子已汇总至宾夕法尼亚州各河段的局地汇水区与网络汇水区。本数据集通过将要素类‘关联至NHDPlusV1地理数据库的美国本土国家鱼类生境行动计划（National Fish Habitat Action Plan, NFHAP）2010年生境条件指数（Habitat Condition Index, HCI）得分与人为干扰数据’裁剪至宾夕法尼亚州州界得到。景观因子涵盖土地利用、人口密度、道路、水坝、矿山以及点源污染场地。经汇水区属性赋值与整合的源数据集满足以下遴选标准：(1) 可有效支撑鱼类生境评估；(2) 在整个研究区内的整合流程保持统一；(3) 能够反映近10年的环境现状；(4) 空间分辨率足以支持局地汇水区单元间的可靠对比分析。本数据集采用COMID标识符，将上述变量与全国水文数据集增强版第1版（National Hydrography Dataset Plus Version 1, NHDPlusV1）的汇水区进行关联，同时也可通过COMID标识符与NHDPlusV1的河段建立关联。汇水区属性包含两类：局地汇水区（指直接向河段汇水的陆地区域，属性名称以“L_”为前缀）与网络汇水区（指汇入该河段出口的所有上游汇水区，包含河段自身的局地汇水区，属性名称以“N_”为前缀）。本形状文件还包含基于生物指标对全生态区人为景观干扰的响应性构建的生境条件得分。研究分别基于局地汇水区、网络汇水区内的干扰构建了生境条件得分，并生成了累积得分——该得分综合了对局地或网络汇水区内特定生物指标产生最强限制作用的干扰因子。本次评估仅对溪流与河流河段进行了得分赋值，详细流程请参见数据文档的流程章节。请引用以下文献：Esselman, P.、D.M. Infante、L. Wang、W. Taylor、W. Daniel、R. Tingley、J. Fenner、A. Cooper、D. Wieferich、D. Thornbrugh与J. Ross.（2011年4月）《宾夕法尼亚州关联至NHDPlusV1的NFHAP 2010年HCI得分与人为干扰数据》。美国国家鱼类生境伙伴关系数据系统。http://dx.doi.org/doi:10.5066/F7DJ5CMC