摘要
以青紫泥(BlueclayeyPaddysoil,BP)和红黄泥(RedPaddysoil,RP)为例,研究发育于不同成土母质的水稻土SOM含量高光谱模型的差异性.结果表明,发育于河湖沉积物的BP与发育于第四纪红色粘土母质的RP,因为土壤中所含粘土矿物的不同,加上有机质组份的差异,其SOM含量高光谱模型具有母质的独特性.无论以反射系数为自变量或是以反射系数一阶微分为自变量,BP与RP的SOM含量高光谱模型在模型所包含波段的个数和位置都有较大的差异.
Blue clayey paddy (BP) derived from the sediments and red paddy soil (RP) derived from the quarternary red earth are selected as samples to study the difference of soil organic matter (SOM) content hyperspectral models of paddy soils derived from different parent material. The results show that the SOM content hyperspectral models of paddy soils have unique characteristics related to parent materials because of the different of clay mineral types and content contained in paddy soils and the different of ratios of fulvic acid to humic acid of PB and RP. There are significant differences in the number and wavelength of bands included in SOM content hyperspectral models between BP and RP within studied bands when reflectance or the first derivative of reflectance is selected as the independent variable.
出处
《科技通报》
北大核心
2004年第6期471-475,共5页
Bulletin of Science and Technology
基金
国家自然科学基金资助项目(40101014)
浙江省科委重点资助项目(001110445)
湖南省教育厅重点资助项目(03A015)
关键词
土壤学
水稻土
土壤有机质
高光谱模型
多元线性逐步回归
pedology
paddy soil
soil organic matter (SOM)
hyperspectral model
multiple linear stepwise regression
