A Simple Harmonic Model for FAPAR Temporal Dynamics in the Wetlands of the Volga-Akhtuba Floodplainстатья

Статья опубликована в высокорейтинговом журнале

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1. Полный текст remotesensing-08-00762.pdf 2,7 МБ 21 сентября 2016 [a.kozlov]
2. Supplementary materials remotesensing-08-00762-s001.pdf 460,2 КБ 21 сентября 2016 [a.kozlov]

[1] Kozlov A., Kozlova M., Skorik N. A simple harmonic model for fapar temporal dynamics in the wetlands of the volga-akhtuba floodplain // Remote Sensing. — 2016. — Vol. 8, no. 9. — P. 762–762. The paper reports a technique used to construct a reference time series for the fraction of absorbed photosynthetically-active radiation (FAPAR) based on remotely-sensed data in the largest Russian arid wetland territory. For the arid Volga-Akhtuba wetlands, FAPAR appears to be an informative spectral index for estimating plant cover health and its seasonal and annual dynamics. Since FAPAR algorithms are developed for multiple satellite sensors, all FAPAR-based models are suggested to be universal and useful for future studies and long-term monitoring of plant cover, particularly in wetlands. The model developed in the present work for FAPAR temporal dynamics clearly reflects the field-observed seasonal and annual changes of plant cover in the Volga-Akhtuba floodplain wetlands. Various types of wetland plant communities were categorized by the specific parameters of the model seasonal vegetation curve. In addition, the values derived from the model function allow quantitative estimation of wetland plant cover health. This information is particularly important for the Volga-Akhtuba floodplain, because its hydrological regime is regulated by the Volzhskaya hydropower plant. The ecosystem is extremely fragile and sensitive to human impact, and wetland plant cover health is a key indicator of regulatory efficiency. The present study is another step towards developing a methodology focused on arid wetland vegetation monitoring and conservation of its biodiversity and natural conditions. [ DOI ]

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