Mapping particle size and soil organic matter in tropical soil based on hyperspectral imaging and non-imaging sensors
文献类型: 外文期刊
作者: Nanni Marcos Rafael;Melo Demattê José Alexandre;Rodrigues Marlon;Abrantes Dos Santos Glaucio Leboso Alemparte;Reis Amanda Silveira;De Oliveira Karym Mayara;Cezar Everson;Furlanetto Renato Herrig;Teixeira Crusiol Luís Guilherme;Sun Liang
作者机构:
关键词: PLSR; Proximal sensing; Remote sensing; Soil attributes
期刊名称: Remote Sensing
ISSN: 2072-4292
年卷期: 2021 年 13 卷 9 期
页码:
收录情况: JCR(2021版) ; EI(2021版)
摘要: We evaluated the use of airborne hyperspectral imaging and non-imaging sensors in the Vis—NIR—SWIR spectral region to assess particle size and soil organic matter in the surface layer of tropical soils (Oxisols, Ultisols, Entisols). The study area is near Piracicaba municipality, São Paulo state, Brazil, in a sugarcane cultivation area of 135 hectares. The study area, with bare soil, was imaged in April 2016 by the AisaFENIX aerotransported hyperspectral sensor, with spectral resolution of 3.5 nm between 380 and 970 nm, and 12 nm between 970 and 2500 nm. We collected 66 surface soil samples. The samples were analyzed for particle size and soil organic matter content. Laboratory spectral measurements were performed using a non-imaging spectroradiometer (ASD FieldSpec 3 Jr). Partial Least Square Regression (PLSR) was used to predict clay, silt, sand and soil organic matter (SOM). The PLSR functions developed were applied to the hyperspectral image of the study area, allowing development of a prediction map of clay, sand, and SOM. The developed PLSR models demonstrated the relationship between the predictor variables at the cross-validation step, both for the non-imaging and imaging sensors, when the highest r and R2 values were obtained for clay, sand, and SOM, with R2 over 0.67. We did not obtain a satisfactory model for silt content. For the non-imaging sensor at the prediction step, R2 values for clay and SOM were over 0.7 and sand was lower than 0.54. The imaging sensor yielded models for clay, sand, and SOM with R2 values of 0.62, 0.66, and 0.67, respectively. Pearson correlation between sensors was greater than 0.849 for the prediction of clay, sand, and SOM. Our study successfully generated, from the imaging sensor, a large-scale and detailed predicted soil maps for particle size and SOM, which are important in the management of tropical soils. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
分类号:
- 相关文献
作者其他论文 更多>>
-
Retrieval of land surface temperature from FY3D MERSI-II based on re-fitting Split Window Algorithm
作者:Zhang Dejun;Yang Shiqi;Sun Liang;Liu Xiaoran;Tang Shihao;Zhu Hao;Ye Qinyu;Zhang Xinyu
关键词:FY3D;MERSI-II;split-window;land surface temperature
-
Strategies for the development of spectral models for soil organic matter estimation
作者:Cezar Everson;Nanni Marcos Rafael;Crusiol Luís Guilherme Teixeira;Sun Liang;Chicati Mônica Sacioto;Furlanetto Renato Herrig;Rodrigues Marlon;Sibaldelli Rubson Natal Ribeiro;Silva Guilherme Fernando Capristo;de Oliveira Karym Mayara;Demattê José A. M.
关键词:Hybrid curves; PLSR; Recalibration; Reflectance; Spiking
-
Estimation of regional evapotranspiration over the Southern Great Plains based on Penman-Monteith theory and the soil moisture estimates
作者:Sun Liang
关键词:ET;Penman-Monteith;triangle;soil moisture;MODIS
-
A review of data assimilation of crop growth simulation based on remote sensing information
作者:Jiang Zhiwei;Chen Zhongxin;Liu Jia;Sun Liang;Jiang Zhiwei;Chen Zhongxin;Liu Jia;Sun Liang
关键词:Data assimilation;Crop growth model;Remote sensing;Forcing method;Calibration method;Updating method
-
Analysis of murine B-cell epitopes on Eastern equine encephalitis virus glycoprotein E2
作者:Sun EnCheng;Zhao Jing;Yang Tao;Xu QingYuan;Qin YongLi;Wang WenShi;Wei Peng;Sun Liang;Sun Jing;Wu DongLai
关键词:Eastern equine encephalitis virus;E2 protein;B-cell epitope mapping
-
Analysis of murine B-cell epitopes on bluetongue virus 12 nonstructural protein 1
作者:Wang HaiXiu;Sun EnCheng;Xu QingYuan;Yang Tao;Zhang Qin;Feng YuFei;Li JunPing;Lv Shuang;Sun Liang;Sun Jing;Wu DongLai
关键词:Bluetongue virus;NS1 protein;MAbs;PAbs;Epitopes