Analysis of carbon sink efficiency of trees based on gas photoacoustic spectroscopy detection

IF 3.1 3区 物理与天体物理 Q2 INSTRUMENTS & INSTRUMENTATION Infrared Physics & Technology Pub Date : 2024-11-22 DOI:10.1016/j.infrared.2024.105630
Xinxin Wang , Zhiying Wu , Ke Chen , Hongyu Chen , Shuntong Chen
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Abstract

Carbon sinks are natural or man-made systems that absorb and store carbon dioxide (CO2) or other greenhouse gases, thereby helping to reduce greenhouse gas concentrations in the atmosphere, and they play an irreplaceable role in the restoration of the ecological environment. Among the current methods for analyzing the carbon sink efficiency of trees, the accuracy and reliability of remote sensing technology are not high. The carbon isotope method cannot guarantee real-time performance, which also greatly affects the development of the carbon trading industry. A gas absorption to laser pulses can excite an acoustic waves, and the gas content can be measured by detecting the size of the wave, which is called photoacoustic(PA) detection technology. In this work, several trees were used as the research object, and an all-optical multi-component PA spectrometer was used to detect the concentration of feature gases in the air nearby the trees. The volume content of C2H2, CO2 and CH4 respectively is detected out, and the volume content of the three gases varies with the trees. Based on the idea of carbon source and generalized carbon source, the three gases can be used to estimate trees’ capacity for sinking carbon sources or mediating ability to carbon source emissions.
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基于气体光声光谱检测的树木碳汇效率分析
碳汇是吸收和储存二氧化碳(CO2)或其他温室气体,从而帮助降低大气中温室气体浓度的自然或人造系统,在恢复生态环境方面发挥着不可替代的作用。在目前分析树木碳汇效率的方法中,遥感技术的准确性和可靠性并不高。碳同位素法无法保证实时性,这也极大地影响了碳交易产业的发展。气体对激光脉冲的吸收可以激发声波,通过检测声波的大小可以测量气体的含量,这就是光声(PA)检测技术。本研究以多棵树木为研究对象,利用全光多组分 PA 光谱仪检测树木附近空气中特征气体的浓度。分别检测出 C2H2、CO2 和 CH4 的体积含量,三种气体的体积含量随树木而变化。根据碳源和广义碳源的概念,这三种气体可用于估算树木的碳源吸收能力或碳源排放调解能力。
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来源期刊
CiteScore
5.70
自引率
12.10%
发文量
400
审稿时长
67 days
期刊介绍: The Journal covers the entire field of infrared physics and technology: theory, experiment, application, devices and instrumentation. Infrared'' is defined as covering the near, mid and far infrared (terahertz) regions from 0.75um (750nm) to 1mm (300GHz.) Submissions in the 300GHz to 100GHz region may be accepted at the editors discretion if their content is relevant to shorter wavelengths. Submissions must be primarily concerned with and directly relevant to this spectral region. Its core topics can be summarized as the generation, propagation and detection, of infrared radiation; the associated optics, materials and devices; and its use in all fields of science, industry, engineering and medicine. Infrared techniques occur in many different fields, notably spectroscopy and interferometry; material characterization and processing; atmospheric physics, astronomy and space research. Scientific aspects include lasers, quantum optics, quantum electronics, image processing and semiconductor physics. Some important applications are medical diagnostics and treatment, industrial inspection and environmental monitoring.
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