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

This shapefile contains landscape factors representing human disturbances summarized to local and network catchments of river reaches for the state of Michigan. 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 Michigan. 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 Michigan. National Fish Habitat Partnership Data System. http://dx.doi.org/doi:10.5066/F7GH9FZG

本形状文件包含密歇根州范围内，针对河段局地集水区与网络集水区汇总得到的、表征人为干扰的景观因子数据集。本数据集系通过对「面向美国本土、关联NHDPlusV1地理数据库的国家鱼类栖息地行动计划（National Fish Habitat Action Plan，NFHAP）2010年生境条件指数（Habitat Condition Index，HCI）得分与人类干扰数据」要素类，按密歇根州州界进行裁剪后得到的成果。景观因子涵盖土地利用类型、人口密度、道路、水坝、矿山以及点源污染场地。本次汇水区编制与属性赋值所采用的源数据集，需满足以下四项遴选标准：(1) 可有效用于鱼类栖息地评估；(2) 在整个研究区内的编制方式保持一致；(3) 能够反映近10年的环境现状；(4) 空间分辨率足以支撑局地集水单元间的科学对比。本数据集通过COMID标识符，将上述变量关联至国家水文数据集增强版第1版（National Hydrography Dataset Plus Version 1，NHDPlusV1）的汇水区；同时也可通过COMID标识符关联至NHDPlusV1的河段数据。集水区属性分为两类：局地集水区（指直接向河段汇水的陆地区域，属性前缀为「L_」）与网络集水区（指所有上游汇入该河段出水口的汇水区，包含河段自身的局地集水区，属性前缀为「N_」）。本形状文件还包含基于生物指标对全生态区内人为景观干扰的响应性所生成的生境条件得分。分别针对局地集水区、网络集水区内的干扰情况生成了单独得分，同时还生成了综合得分，该综合得分考量了对局地或网络集水区内给定生物指标限制作用最强的干扰因子。本评估仅对代表溪流与河流的河段进行评分（详细流程参见方法章节）。请使用以下引用格式：Esselman, P., D.M. Infante, L. Wang, W. Taylor, W. Daniel, R. Tingley, J. Fenner, A. Cooper, D. Wieferich, D. Thornbrugh 和 J. Ross. (2011年4月) 面向密歇根州、关联NHDPlusV1的国家鱼类栖息地行动计划（NFHAP）2010年生境条件指数得分与人类干扰数据. 国家鱼类栖息地伙伴关系数据系统. http://dx.doi.org/doi:10.5066/F7GH9FZG