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Home / Photogrammetric Engineering & Remote Sensing, Number 4 / April 2004

Open Access Satellite Observations of the Seasonal Vegetation Growth in Central Asia: 1982-1990

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A new method called Derivation and Threshold Approach (DATA) was developed to estimate the onset of vegetation green-up (OVG) for the Mongolian Plateau from 1982 to 1990. The estimates of OVG date were highly correlated with geographic patterns and climatic variations across time and space within our study area. The date of OVG was earliest for the forest and meadow steppe, later for the typical steppe, and latest for the desert steppe. Our findings also showed that ecosystems in the Mongolian Plateau exhibited high spa-tiotemporal variability in the date of OVG during the study period. The date of onset was found to be most consistent for the forest ecosystem, while the desert steppe was characterized by high year-to-year variations in onset date. A comparison of the derived OVG date estimates with meteorological data showed a clear linkage between onset date and the beginning of spring precipitation in the dry region of the Mongolian Plateau.

Document Type: Research Article

Publication date: 01 April 2004

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  • The official journal of the American Society for Photogrammetry and Remote Sensing - the Imaging and Geospatial Information Society (ASPRS). This highly respected publication covers all facets of photogrammetry and remote sensing methods and technologies.

    Founded in 1934, the American Society for Photogrammetry and Remote Sensing (ASPRS) is a scientific association serving over 7,000 professional members around the world. Our mission is to advance knowledge and improve understanding of mapping sciences to promote the responsible applications of photogrammetry, remote sensing, geographic information systems (GIS), and supporting technologies.
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