Development and Validation of Algorithm for Vegetation Biomass Monitoring based on Satellite Data

基于卫星数据的植被生物量监测算法的开发和验证

• 批准号: 12680519
• 负责人: ISHIYAMA Takashi
• 金额: $ 2.3万
• 依托单位: Chiba University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12680519/
• 关键词: Vegetation; NDVI; SAVI; OPVI; Vegetation Coverage; Dry Biomass; LAI; Arid land; Vegetation Index; NDVI; SAVI; OPYI; Vegetation Coverage; Dry Biomass; LAI; Arid land; OPVI; Chrolophy11 Contents; 砂漠化; バイオマス; 分光反射率; 人工衛星データ

A vegetation index was calculated from the measured spectral reflectance of grass and Landsat TM data. The correlation coefficients among the radiance ratios and vegetation coverage, biomass, LAI (Leaf Area Index) and chlorophyll concentration were then calculated in arid and semi arid areas. The vegetation index and LAI were obtained from the reflectance in the red and the NIR spectral bands. The following results were obtained : the various vegetation variables and reflectances show a high accuracy in ratio of radiance in red and NIR spectral bands. However the correlations between the vegetation index and vegetation coverage is low. The results show that the vegetation index is gradually saturated as LAI and biomass increases.

植被指数计算从测量光谱反射率的草和陆地卫星TM数据。计算了干旱半干旱地区辐射率与植被覆盖度、生物量、叶面积指数和叶绿素浓度的相关系数。植被指数和叶面积指数是从红色和近红外光谱波段的反射率获得的。结果表明：各种植被参数和反射率在红光和近红外波段的辐射率比上显示出很高的精度。但植被指数与植被覆盖度的相关性较低。结果表明，随着叶面积指数和生物量的增加，植被指数逐渐饱和。

项目成果

T.Ishiyama, S.Tanaka, K.Uchida, S.Fujikawam, Y.Yamashita, M.Kato: "Relationship among vegetation variables and vegetation features of arid lands derived from satellite data"Adavance in Space Research. 28. 183-188 (2001)

T.Ishiyama、S.Tanaka、K.Uchida、S.Fujikawam、Y.Yamashita、M.Kato：“卫星数据得出的干旱地区植被变量与植被特征之间的关系”空间研究进展。

T.Ishiyama,S.Tanaka,K.Uchida,S.Fujikawa,Y.Yamashita and M.Kato: "CORRELATION COEFFICIENTS AMONG VEGETATION INDEX AND VEGETATION VARIA BLES IN ARID AND SEMI ARID LAND BASED ON SATELLITE DATA"Advance in Space Research.

T.Ishiyama、S.Tanaka、K.Uchida、S.Fujikawa、Y.Yamashita 和 M.Kato：“基于卫星数据的干旱和半干旱土地植被指数和植被变量的相关系数”空间研究进展。