Technical note on a map of human modification in CONUS for 2021

The purpose of this note is to briefly describe a detailed (270 m) spatial dataset that estimates the degree of human modification for the lands of the continental US reflecting ~2021 conditions. The degree of human modification is a well-established method to estimate the proximate human activities or processes that have caused, are causing, or may cause impacts on biodiversity and ecosystems. This includes stressors for: urban and built-up, crop and pasture lands, livestock grazing, oil and gas production, mining and quarrying, power generation (renewable and nonrenewable), roads, railways, power lines and towers, logging and wood harvesting, human intrusions, and air pollution. More details are provided in the technical document PDF available here. This work is copyrighted as CC 4.0 BY-NC-SA.本说明旨在简要介绍一套空间分辨率为270米的精细空间数据集，该数据集用于估算美国本土土地的人类活动干扰程度，数据反映约2021年的地表状况。人类活动干扰程度是一套成熟的评估方法，用于估算已发生、正在发生或可能对生物多样性及生态系统造成影响的直接人类活动或过程。该方法涵盖的干扰源包括：城市与建成区、耕地与牧地、畜牧放牧、油气生产、采矿与采石、发电（可再生与不可再生能源）、道路、铁路、输电线及输电塔、伐木与木材采伐、人类侵入活动以及大气污染。更多细节可参阅此处提供的技术文档PDF。本作品采用知识共享署名-非商业性使用-相同方式共享4.0（CC 4.0 BY-NC-SA）协议进行版权保护。