气候变化领域集成服务门户(CCPortal): Spectral Data Processing for Field-Scale Soil Organic Carbon Monitoring

CCPortal

DOI	10.3390/s24030849
	Spectral Data Processing for Field-Scale Soil Organic Carbon Monitoring
	Reyes, Javier; Liess, Mareike
发表日期	2024
EISSN	1424-8220
起始页码	24
结束页码	3
卷号	24 期号:3
英文摘要	Carbon sequestration in soils under agricultural use can contribute to climate change mitigation. Spatial-temporal soil organic carbon (SOC) monitoring requires more efficient data acquisition. This study aims to evaluate the potential of spectral on-the-go proximal measurements to serve these needs. The study was conducted as a long-term field experiment. SOC values ranged between 14 and 25 g kg-1 due to different fertilization treatments. Partial least squares regression models were built based on the spectral laboratory and field data collected with two spectrometers (site-specific and on-the-go). Correction of the field data based on the laboratory data was done by testing linear transformation, piecewise direct standardization, and external parameter orthogonalization (EPO). Different preprocessing methods were applied to extract the best possible information content from the sensor signal. The models were then thoroughly interpreted concerning spectral wavelength importance using regression coefficients and variable importance in projection scores. The detailed wavelength importance analysis disclosed the challenge of using soil spectroscopy for SOC monitoring. The use of different spectrometers under varying soil conditions revealed shifts in wavelength importance. Still, our findings on the use of on-the-go spectroscopy for spatial-temporal SOC monitoring are promising.
英文关键词	carbon sequestration; modeling; long-term field experiment; pedometrics; spectral correction
语种	英语
WOS研究方向	Chemistry ; Engineering ; Instruments & Instrumentation
WOS类目	Chemistry, Analytical ; Engineering, Electrical & Electronic ; Instruments & Instrumentation
WOS记录号	WOS:001160136300001
来源期刊	SENSORS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/295632
作者单位	Helmholtz Association; Helmholtz Center for Environmental Research (UFZ)
推荐引用方式 GB/T 7714	Reyes, Javier,Liess, Mareike. Spectral Data Processing for Field-Scale Soil Organic Carbon Monitoring[J],2024,24(3).
APA	Reyes, Javier,&Liess, Mareike.(2024).Spectral Data Processing for Field-Scale Soil Organic Carbon Monitoring.SENSORS,24(3).
MLA	Reyes, Javier,et al."Spectral Data Processing for Field-Scale Soil Organic Carbon Monitoring".SENSORS 24.3(2024).