【正文】
l ? “The Secretary shall … submit to Congress a strategic plan … that shall describe in detail … the process for employing … remote sensing … , and (its) subsequent use.” 1992 1997 1998 1995 12 Rand Corporation policy analysis ? “Decentralized forest monitoring efforts greatly plicate the data delivery process.” ? “Integrat(e) … FIA … and MultiResolution Land Characterization (MRLC)” consortium. 1992 1997 1998 1999 13 “Adopting an annual inventory system: user perspectives” ? “More ambitious applications of remote sensing are … hindered by … lack of a farreaching technical vision (that) might lead to radical changes in the FIA system and yield significant improvements in information quality and costeffectiveness.” 1992 1997 1998 1999 December, 1999 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