Countryside Survey 1990 mapped estimates of Broad Habitat areas in Great Britain

This dataset consists of stock (area) data for Broad Habitats across Great Britain in 1990 in a 1km grid format. The data are national estimates generated by analysing the sample data from 508 1km squares surveyed for the Countryside Survey long term monitoring project, then scaling up to a national level. The data are presented as percent habitat per 1km square for 16 different habitat types. 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. Surveys have been carried out in 1978, 1984, 1990, 1998 and 2007 with repeated visits to the majority of squares. 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 habitat areas, vegetation species, soil data, linear feature data and freshwater habitat data are also gathered by Countryside Survey. Full details about this dataset can be found at https://doi.org/10.5285/53ef00f4-e0c5-4095-850e-d4c474bc4ffd

本数据集收录了1990年英国广袤栖息地范围内的股票（面积）数据，数据以1公里网格格式呈现。这些数据为国家层面的估算值，通过分析为乡村调查长期监测项目所调查的508个1平方公里方格的样本数据，并据此进行全国范围内的放大处理而得。数据以每1平方公里方格内栖息地百分比的形式展示了16种不同栖息地类型。乡村调查是对英国乡村自然资源进行的一次独特研究或‘审计’。样本点基于GB的15×15公里网格进行分层随机抽样选取。调查工作于1978年、1984年、1990年、1998年和2007年进行，并对大多数方格进行了重复访问。通过严格的科学方法对乡村进行抽样和调查，使我们能够将新的调查结果与之前的结果进行比较。以此方式，我们可以探测到英国乡村随时间推移所发生的逐渐微妙的变化。此外，乡村调查还收集了植被物种、土壤数据、线性特征数据和淡水栖息地数据。关于本数据集的详细信息可在以下链接找到：https://doi.org/10.5285/53ef00f4-e0c5-4095-850e-d4c474bc4ffd