To elucidate the dynamic features of carbon sequestration in ecosystems under changing climates and various disturbance regimes, researchers must understand key ecosystem processes, such as carbon allocation and partitioning, organic matter decomposition, and nutrient cycles, as well as plant functional traits. Here, we reviewed the existing literature and conducted meta-analyses using available datasets from eddy covariance CO₂ flux sites in East Asia to clarify these ecosystem processes and attributes. Since the establishment of AsiaFlux in 1999, the number of flux tower sites has grown to 110 sites, spanning a large geographic extent in East Asia and covering diverse ecosystems embedded in large climatic gradients. Early publications relating to AsiaFlux described CO₂ fluxes from single sites, but over the last 20 years more ecosystem processes and attributes have been included in the study sites’ research programs. Among other advances, researchers have quantified the plant functional traits related to photosynthesis or ecosystem-scale gross primary production and thus demonstrated that CO₂ fluxes are controlled by plant traits; this quantification provides a basis for building ecosystem models. Additional means of understanding the carbon fluxes and pools of these ecosystems have been provided by biometric measurements beneath eddy covariance flux towers, partly on the basis of traditional forestry practices and the measurements of component carbon fluxes, such as respiratory fluxes and litter decomposition rates. Through meta-analyses, we demonstrate good correlations between these fluxes and mention the characteristics of carbon cycle processes in Asian forest ecosystems. By investigating nitrogen biogeochemical cycles at the flux sites, studies have shown that carbon fluxes are also controlled by nitrogen availability. The future success and progress of AsiaFlux could be promoted by further collaborations between this research community and other networks, such as long-term ecological research (LTER) networks, and the development of open databases.

中文翻译：

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东亚森林生态系统中涡流协方差CO2通量站点对生态系统过程的理解的最新进展：综述

为了阐明气候变化和各种干扰机制下生态系统中固碳的动态特征，研究人员必须了解关键的生态系统过程，例如碳分配和分配，有机物分解，养分循环以及植物功能性状。在这里，我们回顾了现有文献，并使用了来自东亚涡动协方差CO ₂通量站点的可用数据集进行了荟萃分析，以阐明这些生态系统过程和属性。自1999年AsiaFlux成立以来，助焊剂塔站点的数量已增长到110个，涵盖了东亚的很大地理范围，并涵盖了嵌入在大气候梯度中的各种生态系统。与AsiaFlux有关的早期出版物描述了CO ₂来自单个站点的流量，但是在过去的20年中，更多的生态系统过程和属性已包含在研究站点的研究计划中。除其他进展外，研究人员还量化了与光合作用或生态系统规模的初级生产总值有关的植物功能性状，从而证明了CO ₂通量受植物性状控制；这种量化为建立生态系统模型提供了基础。通过涡度协方差通量塔下的生物特征测量，提供了一些了解这些生态系统碳通量和池的额外方法，部分是基于传统的林业实践以及对组件碳通量的测量，例如呼吸通量和垃圾分解速率。通过荟萃分析，我们证明了这些通量之间的良好相关性，并提到了亚洲森林生态系统中碳循环过程的特征。通过研究通量点处的氮生物地球化学循环，研究表明碳通量也受氮的有效性控制。