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Carbon storage in Chinese terrestrial ecosystems: approaching a more accurate estimate

机译：中国陆地生态系统中的碳储量：接近更准确的估计

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China is an important region for the global study of carbon because of its vast territory with various climate regimes, diverse ecosystems, and long-term human disturbances and land-use history. Carbon storage in ecosystems in China has been estimated using inventory and modeling methods in the past two decades. However, different methods may result in varied magnitudes and forms of carbon storage. In this study, the current status of carbon storage in terrestrial ecosystems in China, including the impacts of land use, is summarized in the national, regional, and biome scales. Significant differences in data have existed among studies. Such differences are mainly attributed to variations in estimation methods, data availability, and periods. According to available national-scale information on Chinese terrestrial ecosystems, vegetation carbon in China is 6.1 Pg C to 76.2 Pg C (mean 36.98 Pg C) and soil carbon is 43.6 Pg C to 185.7 Pg C (mean 100.75 Pg C). The forest sector has vegetation carbon of 3.26 Pg C to 9.11 Pg C (mean 5.49 Pg C), whereas the grassland sector has 0.13 Pg C to 3.06 Pg C (mean 1.41 Pg C). Soil carbon in the forest and grassland sectors exhibits more significant regional variations. Further studies need a comprehensive methodology, which combines national inventory, field measurement, eddy covariance technique, remote sensing, and model simulation in a single framework, as well as all available data at different temporal and spatial scales, to fully account for the carbon budget in China.
机译：中国是全球碳研究的重要地区，因为中国地域辽阔，气候条件多种多样，生态系统多种多样，长期存在人类干扰和土地利用历史。在过去的二十年中，已经使用清单和建模方法估算了中国生态系统中的碳储存量。但是，不同的方法可能会导致碳存储量和形式的变化。在这项研究中，在国家，地区和生物群落规模中总结了中国陆地生态系统中碳储存的现状，包括土地利用的影响。研究之间存在着显着的数据差异。这种差异主要归因于估算方法，数据可用性和期间的变化。根据可获得的有关中国陆地生态系统的国家级信息，中国的植被碳为6.1 Pg C至76.2 Pg C（平均36.98 Pg C），土壤碳为43.6 Pg C至185.7 Pg C（平均100.75 Pg C）。森林部门的植被碳含量为3.26 Pg C至9.11 Pg C（平均5.49 Pg C），而草地部门的碳含量为0.13 Pg C至3.06 Pg C（平均1.41 Pg C）。森林和草地部门的土壤碳表现出更大的区域差异。进一步的研究需要一种综合的方法，该方法将国家清单，实地测量，涡流协方差技术，遥感和模型模拟结合在一个框架中，以及在不同时空尺度上的所有可用数据，以充分考虑碳预算在中国。

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