An Unvegetated to Vegetated Ratio (UVVR) for coastal wetlands of the Conterminous United States (2014-2018)

This USGS Data Release represents geospatial data sets which were created to produce an Unvegetated to Vegetated Ratio (UVVR) for coastal wetlands of the conterminous United States (2014-2018). The following listed image products were generated 1) Annual spatial datasets (rasters) from 2014 to 2018 each containing 4 bands (Band 1: Unvegetated land fraction; Band 2: Vegetated land fraction; Band 3: Water fraction; Band 4: UVVR clipped into 3 coastal regions (Atlantic (ATL) Gulf of Mexico (GOM) and Pacific (PAC). 2) Calibration/Validation Datasets - datasets which were used in the calibration and validation of the above datasets 3) Mean of masked, multiyear composite - Mean vegetated fraction in coastal wetlands in each region 4) Standard deviation of masked, multiyear composite - Standard deviation of the vegetated fraction in coastal wetlands in each region 5) Unvegetated to Vegetated Ratio (UVVR) based on masked, multiyear composite - Unvegetated to Vegetated Ratio in coastal wetlands in each region The data release was produced in compliance with the new 'open data' requirements as a way to make the scientific products associated with USGS research efforts and publications available to the public.

本次美国地质调查局（USGS）发布的数据集，旨在生成2014-2018年美国本土沿海湿地的裸地-植被比率（Unvegetated to Vegetated Ratio, UVVR）相关地理空间数据集。本次发布包含以下五类影像产品：1. 2014至2018年的年度空间栅格数据集，每套数据集均包含4个波段：波段1为裸地占比、波段2为植被占比、波段3为水体占比、波段4为裸地-植被比率（UVVR），并已裁剪至三大沿海区域——大西洋（Atlantic, ATL）、墨西哥湾（Gulf of Mexico, GOM）与太平洋（Pacific, PAC）。2. 校准与验证数据集：用于上述数据集校准与验证的配套数据集。3. 掩膜多年合成数据均值：各区域沿海湿地的植被占比平均值。4. 掩膜多年合成数据标准差：各区域沿海湿地植被占比的标准差。5. 基于掩膜多年合成数据的裸地-植被比率（UVVR）：各区域沿海湿地的裸地-植被比率。本次数据发布符合最新的“开放数据”要求，旨在将与美国地质调查局（USGS）研究项目及学术出版物相关的科学产品向公众开放。

搜集汇总

背景与挑战

背景概述

该数据集提供了2014年至2018年美国本土沿海湿地的无植被与植被比率（UVVR）地理空间数据，覆盖大西洋、墨西哥湾和太平洋三个区域，包含年际栅格、校准验证数据和多年统计产品。数据集旨在通过客观一致的方法评估沿海湿地的地貌状态和脆弱性，特别适用于国家尺度的盐沼植被覆盖监测和变化分析。