| タイトル | Relationship of Thematic Mapper simulator data to leaf area index of temperate coniferous forests |
| 著者（英） | Running, Steven W.; Peterson, David L.; Spanner, Michael A.; Teuber, Kurt B. |
| 著者所属（英） | Department of Agriculture|TGS Technology, Inc.|NASA Ames Research Center|Montana Univ. |
| 発行日 | 1987-08-01 |
| 言語 | eng |
| 内容記述 | Regional relationships between remote sensing data and the leaf area index (LAI) of coniferous forests were analyzed using data acquired by an Airborne Thematic Mapper. Eighteen coniferous forest stands with a range of projected leaf area index of 0.6-16.1 were sampled from an environmental gradient in moisture and temperature across west-central Oregon. Spectral radiance measurements to account for atmospheric effects were acquired above the canopies from a radiometer mounted on a helicopter. A strong positive relationship was observed between LAI of closed canopy forest stands and the ratio of near-infrared and red spectral bands. A linear regression based on LAI explained 83 percent of the variation in the ratio of the atmospherically corrected bands. A log-linear equation fit the asymptotic characteristic of the relationship better, explaining 91 percent of the variance. The positive relationship is explained by a strong asymptotic inverse relationship between LAI and red radiation and a relatively flat response between LAI and near-infrared radiation. |
| NASA分類 | EARTH RESOURCES AND REMOTE SENSING |
| レポートNO | 87A53017 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/375767 |
