基于过程的日本落叶松(Larix kaempferi)森林生态系统级单萜烯建模

IF 3.7 3区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Journal of Geophysical Research: Biogeosciences Pub Date : 2024-10-21 DOI:10.1029/2024JG008067
Zhanzhuo Chen, Tomomichi Kato, Akihiko Ito, Tatsuya Miyauchi, Yoshiyuki Takahashi, Jing Tang
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引用次数: 0

摘要

在全球范围内,植物排放的生物挥发性有机化合物(BVOC)是排放到大气中的挥发性有机化合物的主要来源。单萜作为主要的生物挥发性有机化合物,可形成二次有机气溶胶并影响云的特性。在这项研究中,我们在痕量气体植被集成模拟器(VISIT)模型中开发了基于过程的单萜模块,将单萜的产生、储存和排放视为三个主要过程。我们还根据日本富士山日本落叶松(Larix kaempferi)林地半小时尺度的生态系统级观测数据,进一步评估了模拟的单萜排放。VISIT 模型的精度相对较高,其威尔莫特一致指数为 0.61,平均偏差误差(MBE)为 0.29,均方根误差(RMSE)为 0.43,与自然界气体和气溶胶排放模型的精度相当,后者的威尔莫特一致指数为 0.63,平均偏差误差(MBE)为 0.40,均方根误差(RMSE)为 0.54。在高二氧化碳排放情景下的长期模拟中,单萜排放与总初级生产之间的比率与二氧化碳浓度的相关性比与温度的相关性更强。我们的研究为更准确地模拟日本落叶松的单萜排放提供了一种基于过程的建模方法。
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Process-Based Modeling of Ecosystem-Level Monoterpene From a Japanese Larch (Larix kaempferi) Forest

Globally, the emission of biogenic volatile organic compounds (BVOC) by plants represents the dominant source of volatile organic compounds emitted to the atmosphere. Monoterpenes, as the major BVOC group, can contribute to forming secondary organic aerosols and influence cloud properties. In this study, we developed a process-based monoterpene module in the Vegetation Integrative SImulator for Trace gases (VISIT) model by considering the production, storage, and emission of monoterpene as three main processes. We further evaluated the modeled monoterpene emissions against the ecosystem-level observation data at a half-hour scale at a Japanese larch (Larix kaempferi) forest site on Mt. Fuji, Japan. The VISIT model performed with relatively higher accuracy with a Willmott's index of agreement at 0.61, a mean bias error (MBE) at 0.29, and a root mean squared error (RMSE) at 0.43, comparable to that of Model of Emissions of Gases and Aerosols from Nature model with a Willmott's index of agreement at 0.63, a MBE at 0.40, and a RMSE at 0.54. In a long-term simulation under high CO2 emission scenarios, the ratio between monoterpene emission and gross primary production exhibited a stronger correlation with CO2 concentration than temperature. Our study provides a process-based modeling approach for more accurately simulating monoterpene emissions from Japanese larch.

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来源期刊
Journal of Geophysical Research: Biogeosciences
Journal of Geophysical Research: Biogeosciences Earth and Planetary Sciences-Paleontology
CiteScore
6.60
自引率
5.40%
发文量
242
期刊介绍: JGR-Biogeosciences focuses on biogeosciences of the Earth system in the past, present, and future and the extension of this research to planetary studies. The emerging field of biogeosciences spans the intellectual interface between biology and the geosciences and attempts to understand the functions of the Earth system across multiple spatial and temporal scales. Studies in biogeosciences may use multiple lines of evidence drawn from diverse fields to gain a holistic understanding of terrestrial, freshwater, and marine ecosystems and extreme environments. Specific topics within the scope of the section include process-based theoretical, experimental, and field studies of biogeochemistry, biogeophysics, atmosphere-, land-, and ocean-ecosystem interactions, biomineralization, life in extreme environments, astrobiology, microbial processes, geomicrobiology, and evolutionary geobiology
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