Transferability of a Visible and Near-Infrared Model for Soil Organic   Matter Estimation in Riparian Landscapes

doi:10.3390/rs6054305

CORC > 北京大学 > 城市与环境学院

	Transferability of a Visible and Near-Infrared Model for Soil Organic Matter Estimation in Riparian Landscapes
	Liu, Yaolin ; Jiang, Qinghu ; Fei, Teng ; Wang, Junjie ; Shi, Tiezhu ; Guo, Kai ; Li, Xiran ; Chen, Yiyun
刊名	remote sens basel
	2014
关键词	VNIR spectroscopy soil organic matter model transferability riparian landscape DIFFUSE-REFLECTANCE SPECTROSCOPY NIR SPECTROSCOPY JIANGHAN PLAIN AGRICULTURAL SOILS CENTRAL YANGTZE CARBON CONTENT PREDICTION FIELD CALIBRATIONS REGRESSION
DOI	10.3390/rs6054305
英文摘要	The transferability of a visible and near-infrared (VNIR) model for soil organic matter (SOM) estimation in riparian landscapes is explored. The results indicate that for the soil samples with air-drying, grinding and 2-mm sieving pretreatment, the model calibrated from the soil sample set with mixed land-use types can be applied in the SOM prediction of cropland soil samples (r(Pre)(2) = 0.66, RMSE = 2.78 g.kg(-1), residual prediction deviation (RPD) = 1.45). The models calibrated from cropland soil samples, however, cannot be transferred to the SOM prediction of soil samples with diverse land-use types and different SOM ranges. Wavelengths in the region of 350-800 nm and around 1900 nm are important for SOM estimation. The correlation analysis reveals that the spectral wavelengths from the soil samples with and without the air-drying, grinding and 2-mm sieving pretreatment are not linearly correlated at each wavelength in the region of 350-1000 nm, which is an important spectral region for SOM estimation in riparian landscapes. This result explains why the models calibrated from samples without pretreatment fail in the SOM estimation. The Kennard-Stone algorithm performed well in the selection of a representative subset for SOM estimation using the spectra of soil samples with pretreatment, but failed in soil samples without the pretreatment. Our study also demonstrates that a widely applicable SOM prediction model for riparian landscapes should be based on a wide range of SOM content.; Remote Sensing; SCI(E); EI; 0; ARTICLE; yaolin610@whu.edu.cn; jiang8687@whu.edu.cn; only4john@gmail.com; wjjlight@163.com; tiezhushi@whu.edu.cn; guokai1115@sina.com; lxrna@163.com; chenyy@whu.edu.cn; 5; 4305-4322; 6
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/389378]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Liu, Yaolin,Jiang, Qinghu,Fei, Teng,et al. Transferability of a Visible and Near-Infrared Model for Soil Organic Matter Estimation in Riparian Landscapes[J]. remote sens basel,2014.
APA	Liu, Yaolin.,Jiang, Qinghu.,Fei, Teng.,Wang, Junjie.,Shi, Tiezhu.,...&Chen, Yiyun.(2014).Transferability of a Visible and Near-Infrared Model for Soil Organic Matter Estimation in Riparian Landscapes.remote sens basel.
MLA	Liu, Yaolin,et al."Transferability of a Visible and Near-Infrared Model for Soil Organic Matter Estimation in Riparian Landscapes".remote sens basel (2014).