The rapid measurement of soil carbon stock using near-infrared technology

International Conference on Climate Change: Challenges and Opportunity on Environment Degradation Researches

地球科学;生态环境科学

Kusumo, B.H.^1 ; Sukartono^1 ; Bustan^1

Department of Soil Science, Faculty of Agriculture, University of Mataram, JL. Majapahit No. 62, Mataram, Lombok, Indonesia^1

关键词: Agricultural land;    Chemical substance;    Near infra red;    Non-destructive technique;    Partial least square regression;    Rapid measurement;    Soil carbon stock;    Spectral collection;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/129/1/012023/pdf
DOI  :  10.1088/1755-1315/129/1/012023

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

As a soil pool stores carbon (C) three times higher than an atmospheric pool, the depletion of C stock in the soil will significantly increase the concentration of CO2in the atmosphere, causing global warming. However, the monitoring or measurement of soil C stock using conventional procedures is time-consuming and expensive. So it requires a rapid and non-destructive technique that is simple and does not need chemical substances. This research is aimed at testing whether near-infrared (NIR) technology is able to rapidly measure C stock in the soil. Soil samples were collected from an agricultural land at the sub-district of Kayangan, North Lombok, Indonesia. The coordinates of the samples were recorded. Parts of the samples were analyzed using conventional procedure (Walkley and Black) and some other parts were scanned using near-infrared spectroscopy (NIRS) for soil spectral collection. Partial Least Square Regression (PLSR) was used to develop models from soil C data measured by conventional analysis and from spectral data scanned by NIRS. The best model was moderately successful to measure soil C stock in the study area in North Lombok. This indicates that the NIR technology can be further used to monitor the change of soil C stock in the soil.