nitiestodevelopa30-meterspatialdatabase-預(yù)覽頁
【正文】 97(12)1114 14 FIA Vision for Remote Sensing ? FIA adopts performance standard to “go … operational with (satellite) remote sensing … by the end of … 2020.” 1992 1997 1998 1999 2020 1995 15 FIA Vision for Remote Sensing ? Traditional FIA statistics remain essential for strategic analyses 179 9 3 191 Other forest 40 4 8 52 Reserved 143 201 159 504 Timber land West South North Million of acres 1992 1997 1998 1999 2020 1995 16 FIA Vision for Remote Sensing ? However, “key analytical outputs today are maps, map layers, or other spatial representations of information and plex models.” 1992 1997 1998 1999 2020 1995 “At the nationalto regional scale …, distinguishing among 15 to 20 forest cover types is impo tant. 17 FIA Vision for Remote Sensing 1992 1997 1998 1999 2020 1995 18 FIA Vision for Remote Sensing 1992 1997 1998 1999 2020 1995 ? “Reduc(e) … human intervention … (to achieve) the cheapest and fastest way to produce (the remote sensing) product.” The “process must provide … linkages to other spatial data sets, such as censusdemographics or digital elevation models.” ?“(D)ata from various … programs can be bined more effectively to answer a much broader range of questions than any agency could tackle alone.” 19 FIA joins MRLC 2020 Consortium ? FIA contributes $200,000 in a federal partnership to build a Landsat 7 imageset for the entire USA. 1992 1997 1998 1999 2020 1995 20 FIA joins MRLC 2020 Consortium ? Three seasons of Landsat 7 imagery 20202020 – Early season (green up) – Peak greenness (summer) – Late season (brown up) 1992 1997 1998 1999 2020 1995 21 FIA joins MRLC 2020 Consortium ? Terrain corrected, one pixel spatial accuracy ? Radiometric calibration for seamless data across scenes 1992 1997 1998 1999 2020 1995 22 FIA joins MRLC 2020 Consortium ? $45 per CD, including 3 dates of calibrated Landsat 7 data and Digital Elevation Model (DEM) used for terrain correction 1992 1997 1998 1999 2020 1995 23 National Land Cover Data (NLCD 2020) ? FIA considers working with USGS EROS Data Center to replace NLCD 1992 forest cover map of USA using MRLC 2020 new Landsat 7 ETM+ data ? Annualized FIA data more valuable as training data for classification of Landsat data 1992 1997 1998 1999 2020 1995 24 FIA partnership with USGS ? FIA and USGS conduct pilot studies on highly automated digital classification of forest types with MRLC 2020 database and FIA plot data. 1992 1997 1998 1999 2020 2020 1995 25 MRLC Input Database ?If bright 30 amp。 shape = 3 amp。 canopy10 ?amp
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