摘要
在叶片和冠层两个尺度上,分析了栎树叶片氮碳两种生化组分含量与其反射率特性的统计关系;采用逐步回归法,分别利用地面光谱和航空高光谱曲线对叶片和冠层尺度进行了反演,选择进入回归方程的波段分别为719 nm、1 854 nm/1 861 nm、359 nm和767.9 nm/1 319.0 nm。研究表明,叶片尺度由于受到干扰较小,反演结果明显优于冠层尺度;冠层尺度的反演受大气水汽、冠层结构、植被下垫面等诸多因素影响较大,因此在进行冠层尺度生化组分反演时,必须充分考虑上述因素的影响。
From blade and canopy level, this paper analyzed the statistical relationship between the carbon or nitrogen biochemical component content of oak and their reflectivity characteristics. And then, the paper compared the sensibility band's discrepancies acquired by ground spectrometer and aerial hyperspectral remote sensing. The results show that at the 95% confidence level, the two inversion methods can greatly extract the carbon and nitrogen content of oak. The differences of inversion effect between blade and canopy level are significant, canopy level inversion effect influenced by atmospheric vapor and many other factors.
出处
《地理空间信息》
2017年第1期40-42,共3页
Geospatial Information
基金
国家重点基础研究发展计划资助项目(2013CB733405)
关键词
栎树
氮含量
碳含量
叶片尺度
冠层尺度
oak
the carbon content
the nitrogen content
blade level
canopy level
