棉花学报2011，Vol.23Issue(5)：447-453,7.
基于不同植被指数的棉花光合有效辐射吸收分量估算研究
Estimating Cotton FPAR Based on the Different Vegetation Indexes
摘要
Abstract
Two field experiments were conducted with different densities and waters, the relationship was analyzed between spectral reflectance and the fraction absorption of photosynthetically active radiation(FPAR), and the estimating models were es-tablished for FPAR in the whole growth stages of cotton. The results indicated that it was significant correlations among the FPAR with all the vegetation indexes, the green normalized difference vegetation index(GREENNDVI) and the reflectance ratio (GMI) was better, theirs correlations coefficient (r) were 0.794 and 0.765, respectively, the estimated models of FPAR were es-tablished, and the determination coefficients (r2) were 0.657 and 0.633, the root mean square errors (RMSE) were 0.089 and 0.093, respectively. The results suggested that the FPAR can be effectively estimate by spectral parameters during growth stages of cotton.关键词
棉花/光合有效辐射吸收分量/植被指数/估算模型Key words
cotton/ fraction of absorbed photosynthetically active radiation(FPAR)/ vegetation index/ estimating models分类
农业科技引用本文复制引用
金秀良,李少昆,王克如,肖春华,王方永,陈兵,陈江鲁,吕银亮,刁万英..基于不同植被指数的棉花光合有效辐射吸收分量估算研究[J].棉花学报,2011,23(5):447-453,7.基金项目
国家自然基金(30860139)、国家科技支撑项目(2007BAH12B02)、国家“863”计划(2006AA 10A302)共同资助 （30860139）
