Headwater stream erosion data from the Environment and Rural Affairs Monitoring & Modelling Programme, Wales, 2021-2023

This dataset consists of headwater erosion process data for sites across Wales between 2021 and 2023, collected as part of the Environment and Rural Affairs Monitoring and Modelling Programme (ERAMMP) National Field Survey. Data include the classification and extent of erosion features.
Headwater stream survey data was collected from 101 x 1km squares across Wales, collected as part of the Environment and Rural Affairs Monitoring and Modelling Programme (ERAMMP) National Field Survey. Erosion features were identified in 99 surveyed headwater streams. ERAMMP follows an earlier monitoring programme, the Glastir Monitoring and Evaluation Programme (GMEP), which was set up by the Welsh Government in 2013 to monitor the effects of the Glastir agri-environment scheme on the environment and ran from 2013 to 2016. The field survey element for both GMEP and ERAMMP was based on a stratified random sampling design of 300 x 1km square sites across Wales (225 of which were resurveyed for ERAMMP in 2021-23, though not all squares contained headwater streams). It was managed by the UK Centre for Ecology & Hydrology.

本数据集涵盖2021至2023年间威尔士境内各监测点位的源头侵蚀过程数据，采集自环境与乡村事务监测建模项目（Environment and Rural Affairs Monitoring and Modelling Programme，ERAMMP）的全国野外调查。数据包含侵蚀特征的分类与分布范围。
源头溪流调查数据采集自威尔士境内101个1平方千米样方，同样属于ERAMMP全国野外调查的一部分。本次调查共在99条受监测的源头溪流中识别出侵蚀特征。ERAMMP承接了此前的格拉斯蒂尔监测与评估项目（Glastir Monitoring and Evaluation Programme，GMEP）：该项目由威尔士政府于2013年启动，旨在监测格拉斯蒂尔农业环境计划对生态环境的影响，运行周期为2013至2016年。GMEP与ERAMMP的野外调查均采用分层随机抽样设计，覆盖威尔士境内300个1平方千米样方（其中225个样方于2021-2023年被ERAMMP重新调查，但并非所有样方均包含源头溪流）。本数据集由英国生态与水文研究中心（UK Centre for Ecology & Hydrology）负责管理。