| タイトル | Estimating biogeochemical fluxes across sagebrush-steppe landscapes with Thematic Mapper imagery |
| 著者（英） | Matson, P. A.; Burke, I. C.; Ojima, D. S.; Reiners, W. A.; Strong, L. L. |
| 著者所属（英） | NASA Ames Research Center|Royal Swedish Academy of Sciences|Colorado State Univ.|Wyoming Univ.|TGS Technology, Inc. |
| 発行日 | 1989-06-01 |
| 言語 | eng |
| 内容記述 | Thematic Mapper (TM) satellite data were coupled to an ecosystem simulation model to simulate variation in nitrogen mineralization over time and space in a sagebrush steppe. This system of data inputs and calculations provides estimates of ecosystem properties including rates of biogeochemical processes over extensive and complex landscapes, and under changing management and climatic conditions. The landscape surface was divided into three sagebrush ecosystem types plus one other class consisting of nonsagebrush vegetation. This classification presented a complex mosaic of ecosystem types that shifted markedly in composition from one end of the 933-sq km study area to the other. Annual N-mineralization rates ranged from 5 to 25 kg N/ha among the three sagebrush types. The most active type comprised 42 percent of the entire area but contributed 60 percent to the nitrogen mineralization throughout the landscape. |
| NASA分類 | EARTH RESOURCES AND REMOTE SENSING |
| レポートNO | 90A15111 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/359691 |
