Headwater stream water chemistry data 1998 [Countryside Survey]

This dataset consists of results of chemical analyses of single water chemistry samples, taken from headwater streams during a survey in 1998. Water samples were analysed at the Centre for Ecology & Hydrology for chemical analysis of alkalinity (at pH 8.3) and soluble reactive phosphorus. Conductivity and pH were measured in the field using a regularly calibrated field meter. 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.

本数据集收录了1998年对源头溪流中单一水质样本进行的化学分析结果。这些水样在生态与水文中心进行了化学分析，包括碱度（pH值为8.3）和可溶性活性磷的测定。电导率和pH值则在现场利用定期校准的便携式测量仪进行测量。数据收集是在生态与水文中心管理的乡村调查长期监测项目中进行的。乡村调查是对英国乡村自然资源进行的一项独特研究或审计。样本点基于GB 15公里×15公里的网格进行分层随机选择。源头溪流调查在1990年、1998年和2007年进行，对大多数地点进行了重复访问。乡村调查采用严谨的科学研究方法，使我们能够将新结果与先前调查的结果进行比较。通过这种方式，我们可以检测到英国乡村随时间逐渐发生的微妙变化。除了源头溪流数据外，乡村调查还收集了土壤数据、生境面积、植被物种数据和线性生境数据。