Phenology analysis of vegetation in the river basin
2008
Ishihra, M.(Gifu Univ. (Japan). River Basin Research Center) | Lee, Y. | Abdullah, H.M. | Goto, S. | Kurumado, K. | Akiyama, T.
In many global scale research such as vegetation changes and carbon dynamics concerning with earth warming, precise validation was not enough applied to ascertain if the results of satellite analysis representing correct information at ground surface. In order to resolve such problems, 'Creating Satellite Ecology Project' is aiming at satellite data analysis combined with biometric study at ground and model evaluation in Gifu University. We are collecting precise ground data for validation at the main site on the Daihachiga river basin in Takayama city. In this paper, we reported about ground phenology observations (1) in agriculture fields, (2) using indicator tree species, and (3) using digital images at the basin scale. In the case of (1), it was shown that there were differences in the biomass and LAI (Leaf Area Index) by the difference of the cropping type, and the seasonal changing pattern is also different. Moreover, in the case of (2), it was proposed the technique for detecting the phenology change using indicator trees (Juglans ailanthifolia), and we could observe the difference of the phenology change according with the altitude. In addition, in the case of (3), the events of green-up, yellowing and defoliation were able to be detected by analyzing the digital images simply acquired by commercialized cameras. It was expected that such methods provide useful ground information of agriculture and forest lands.
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