The Influence of Altitudinal Zonality on Spectral Characteristics (MODIS/Terra) Mountain Forests of Western Sayan

Autor: Irina Botvich, Yulia Ivanova, Nikolay Kukoba
Rok vydání: 2015
Předmět:
Zdroj: Climate Change Impacts on High-Altitude Ecosystems ISBN: 9783319128580
DOI: 10.1007/978-3-319-12859-7_26
Popis: The purpose of this study is to find a relationship between changes in spectral characteristics (MODIS/Terra) of mountain forests and the altitude at which they grow. In the study area, which is located in the West Sayan Mountains (in South Siberia), the types of forest ecosystems change markedly with altitude. The study uses the data of the MODIS–NPP model intended for the evaluation of global net production. Results of the study show that the best approach to dividing mountain forests into different types is to use 8-day composites of satellite data collected at the beginning of the growing season (April–May). This is the time when the most significant differences are recorded between vegetation indices, including Normalized Difference Vegetation Index (NDVI), LAI, and EVI of the mountain forests growing in different altitudinal zones.
Databáze: OpenAIRE