期刊论文

中文

植物保护

0529-1542

2012

38

4

72-76,88

10.3969/j.issn.0529-1542.2012.04.015

(200904006,201004014):林业公益性行业科研专项

本校为第一机构

为了探索建立炭疽病胁迫下杉木叶绿素含量的高光谱估算模型,促进遥感技术在森林病虫害监测中的应用,通过获取不同发病程度的杉木冠层光谱及相应的叶绿素含量,将冠层光谱数据、一阶微分数据与相应的叶绿素含量分别进行了相关分析。采用逐步回归、主成分回归及偏最小二乘回归方法构建叶绿素含量的估算模型。叶绿素含量与原始光谱在可见光（614～698nm）和近红外区（724nm之后）达到极显著相关,且在近红外区基本趋于稳定;与一阶微分光谱在424～486nm、514～532nm、552～682nm、698～755nm和762～772nm波段全部达到极显著相关;3种建模方法均消除了参数间多重共线性的影响,模型的决定系数全部达到极显...

This study was to explore and build the hyper-spectral estimation models of the chlorophyll content of Chinese fir canopy under anthracnose stress, and promote application of the hyper-spectral remote sensing tech- nology to forest pests and disease monitoring. Through aquiring spectral data and the corresponding chlorophyll contents of Chinese fir of different severity levels, the correlation among the pigment contents, the first deriva- tive data and the canopy hyper-spectral data were analyzed, and the estimation models were built by stepwis...