期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2010
卷号：XXXVIII - Part 8
页码：916-919
出版社：Copernicus Publications
摘要：Monitoring the vegetation activity is important for understanding the carbon cycle and the vegetation response to environmental changes. GCOM-C (Global Change Observation Mission for Climate) satellite will be launched in 2014, and it has a SGLI ( Second- generation global imager ) sensor with 250 m spatial resolution. In generally, it is used for monitor vegetation activities with satellite observation that vegetation indices such as normalized vegetation index NDVI ((Kidwell, K.B., 1990), enhanced vegetation index EVI ((Huete et al., 1999)) and so on. From the satellite observation, re.ected light from the ground object has a mixture information such as vegetation coverage, depth, kinds of vegetation and vegetation activities. Vegetation indices characteristics are studied and reported in a lot of papers. We consider that a set of vegetation indices is needed to extract the quantities of vegetation. The set of vegetation indices is planed to use for estimating gross primary production of vegetation. To estimate gross primary production, chlorophyll content per leaf area is important parameter. We have studied the relationship between chlorophyll content per leaf area and spectral re.ectance for several vegetation states for several kinds of broad leaf. In the previous study ( S. Furumi et. al, 1998 (Furumi et al., 1998)) , the re- .ectance is reducing against the chlorophyll content is increasing for blue, green and red wavelength. For near infrared wavelength, the re.ectance is not changed against the chlorophyll contents is increasing. In this study, we focus on paddy field. Appropriate fertilizer causes higher chlorophyll content of a leaf. We measured the spectral re.ectance, photosynthesis, height of rice plant, the number of stem at the ground, the spectral re.ectance using RC helicopter for fertilization and no-fertilization area at Nara prefectural agriculture center in Kashihara, Nara. Using these data, we studied the characteristics of spectral re.ectance difference between fertilization and no-fertilization area. For ground measurement spectral re.ectance, we found that the spectral shape difference between them. For fer- tilization rice leaf, the normalized re.ectance of visible wavelength is lower than that for no-fertilization rice leaf. And the normalized re.ectance of near infrared wavelength is higher for fertilization rice leaf than that for no-fertilization rice leaf. These results' tendency was agree with the previous study of characteristics of re.ectance against chlorophyll contents of a leaf. Using this characteristics, the index for chlorophyll content is studied
