Woody landscape and habitat features from the Environment and Rural Affairs Monitoring & Modelling Programme, Wales, 2021-2023

This dataset consists of records of woody landscape area, linear and point features such as areas of woody habitat, hedges, and trees and associated attributes from sites across Wales, collected as part of the Environment and Rural Affairs Monitoring & Modelling Programme (ERAMMP) National Field Survey (NFS) between 2021-2023. Data include areas or lengths of features, with associated land use, species and condition measures where applicable.
ERAMMP NFS is a resurvey of all of the 300 locations from the initial Glastir Monitoring and Evaluation Programme (GMEP) monitoring program (300 1km squares) on a rolling annual basis, with the aim to resurvey all sites between 2021 and 2025. Between 2021-2023 ERAMMP National Field Survey resurveyed 225 of those 300 for woody landscape features. The initial monitoring program, GMEP, was set up by the Welsh Government in 2013 to report national trends and monitor the effects of the Glastir agri-environment scheme on the environment and ran from 2013 to 2016.
The field survey element was based on a stratified random sampling design of 300 x 1km square sites across Wales, and was managed by the UK Centre for Ecology & Hydrology.

本数据集收录了2021-2023年间，依托环境与农村事务监测与建模计划（Environment and Rural Affairs Monitoring & Modelling Programme, ERAMMP）国家野外调查（National Field Survey, NFS）所采集的威尔士全境木本景观区域、线性及点状地物（包括木本生境面积、绿篱、林木等）及其关联属性的记录。数据包含各地物的面积或长度，以及适用情况下的相关土地利用、物种与健康状况指标。
ERAMMP国家野外调查是对初始格拉斯蒂尔监测与评估计划（Glas-tir Monitoring and Evaluation Programme, GMEP）的300个1平方千米样方点位开展滚动年度复测的项目，目标是在2021-2025年间完成所有点位的复测工作。2021-2023年间，ERAMMP国家野外调查已完成其中225个点位的木本景观地物复测任务。初始监测计划GMEP由威尔士政府于2013年发起，旨在报告全国环境变化趋势并监测格拉斯蒂尔农业环境计划对环境的影响，执行周期为2013年至2016年。
本次野外调查采用分层随机抽样设计，在威尔士全境布设300个1平方千米样方点位，由英国生态与水文中心（UK Centre for Ecology & Hydrology）负责管理。