River Habitat Survey (RHS) data 1998 [Countryside Survey]

River Habitat Survey (RHS) data from rivers and streams surveyed in 1998 as part of the Countryside Survey project. River Habitat Survey (RHS) is an assessment of the physical structure of freshwater streams and rivers based on a standard 500m length sample unit. It does not require specialist geomorphological or botanical expertise but consistent recognition of features included on the form is essential. To ensure consistency of recording all surveyors must be accredited, and recording follows standard protocols. Data were collected under the Countryside Survey long term monitoring project managed by the Centre for Ecology & Hydrology. The Countryside Survey is a unique study or 'audit' of the natural resources of the UK's countryside. The sample sites are chosen from a stratified random sample, based on a 15 by 15 km grid of GB. Headwater stream surveys have been carried out in 1990, 1998 and 2007 with repeated visits to the majority of sites. The countryside is sampled and surveyed using rigorous scientific methods, allowing us to compare new results with those from previous surveys. In this way we can detect the gradual and subtle changes that occur in the UK's countryside over time. In addition to headwater stream data, soil data, habitat areas, vegetation species data and linear habitat data are also gathered by Countryside Survey. Full details about this dataset can be found at https://doi.org/10.5285/2b285f04-ffd1-4da4-a742-0306e7a8e40c河流生境调查（River Habitat Survey, RHS）数据集涵盖1998年调查的英国河流与溪流数据，该数据作为乡村调查（Countryside Survey）项目的组成部分。河流生境调查（RHS）是基于标准500米长度采样单元的淡水溪流与河流物理结构评估方法，无需专业地貌学或植物学专业知识，但必须统一识别调查表中所列特征。为确保记录一致性，所有调查人员均需经过认证，且记录工作需严格遵循标准规程。本数据集由生态与水文中心（Centre for Ecology & Hydrology）管理的乡村调查长期监测项目采集。乡村调查是针对英国乡村自然资源的独特研究或“审计”。采样点位基于大不列颠15×15公里网格的分层随机抽样选取。上游溪流调查分别于1990年、1998年与2007年开展，多数点位均进行了重访。该乡村区域采用严谨的科学方法开展采样与调查，可将新调查结果与此前历次调查结果进行对比，借此可检测英国乡村随时间推移发生的渐进式细微变化。除上游溪流数据外，乡村调查还同步收集土壤数据、生境面积、植被物种数据及线性生境数据。该数据集的完整详情可参见https://doi.org/10.5285/2b285f04-ffd1-4da4-a742-0306e7a8e40c