Summary Report: 2017 National Resources Inventory

Excerpts from the report Introduction: This report presents summary results from the 2017 National Resources Inventory (NRI). The 2017 NRI is the latest in a series of natural resource inventories conducted by the U.S. Department of Agriculture’s Natural Resources Conservation Service (NRCS). It provides updated information on the status, condition, and trends of land, soil, water, and related resources on the Nation’s non-Federal lands. Non-Federal lands include privately owned lands, tribal and trust lands, and lands controlled by State and local governments. This report presents national- and state-level estimates from the 2017 NRI for the 48 conterminous states, Hawaii, and the Caribbean territories for basic NRI data themes, including status, changes and trends in land cover/use, irrigation, land capability class and subclass, prime farmland, soil erosion, and wetlands.

报告引言节选：本报告呈现了2017年全国自然资源调查（National Resources Inventory, NRI）的汇总结果。2017年NRI是美国农业部自然资源保护局（Natural Resources Conservation Service, NRCS）开展的系列自然资源调查中的最新一轮调查。该调查针对美国非联邦公有土地，提供了土地、土壤、水体及相关资源的现状、状况与变化趋势的更新信息。非联邦公有土地包括私有土地、部落托管土地以及州和地方政府管辖的土地。本报告基于2017年NRI的数据，为美国本土48州、夏威夷州及加勒比海地区领地提供了国家级与州级层面的估算结果，涵盖NRI的核心数据主题，包括土地覆盖/利用、灌溉、土地潜力等级与亚等级、优质农田、土壤侵蚀以及湿地的现状、变化与趋势。