高分辨率长时间序列的中国岩石化学风化碳汇数据及其变化趋势
High-Resolution Long-Term Data of China's Rock Weathering Carbon Sink and Its Spatial-Temporal Pattern
查看参考文献46篇
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文摘
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中国岩石化学风化碳汇(RCS)在碳循环中极其重要,然而,中国2000—2020年RCS的时空格局和演变趋势尚未得到系统量化。本研究依据水文气象数据和RCS计算模型,对中国RCS的量级和时空格局进行了系统量化研究。结果表明,中国RCS通量(RCSF)和年均总量(FRCS)分别为3.46 t/(km~2·a)和17.32 Tg/a,并随纬度的升高而逐渐降低,主要集中在西南八省和胡焕庸线以南。其中,贵州省的RCSF[11.79 t/(km~2·a)]远高于其他省份,但总量却低于广西壮族自治区(0.21 Tg/a),而北京市和上海市的碳汇比重不足1%。中国RCS在研究期间整体处于波动式增加状态,增长速率为2.76 kg/km~2,至2020年,RCSF和FRCS分别增加了0.31 t/(km~2·a)和2.11 Tg/a。本文构建了一套中国高分辨率RCS数据集,可为中国碳中和目标的实现提供数据支撑。 |
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其他语种文摘
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Rock weathering Carbon Sink (RCS) is extremely important in the carbon cycle. However, the spatial-temporal pattern of China’s RCS and its changing trend from 2000 to 2020 have not been quantified. This study systematically quantified the magnitude and the spatial-temporal pattern of RCS in China with the support of hydro-meteorological data and RCS computational models. Our findings are as follows. First, the RCS Flux (RCSF) and the Full RCS (FRCS) of China were 3.46 t/(km~2·a) and 17.32 Tg/a, respectively. RCS not only gradually decreased with the increase of latitude, but also mainly concentrated in the eight southwestern provinces and south of the Hu Line. Furthermore, RCSF of Guizhou (11.79 t/(km~2·a)) was much higher than that of other provinces, but FRCS of Guizhou was lower than that of Guangxi (0.21 Tg/a). Moreover, FRCS in Beijing and Shanghai accounted for less than 1% of China's carbon sink. Finally, China's RCS was in a fluctuating increase overall during the study period with a growth rate of 2.76 kg/km~2, and by 2020, China's RCSF and FRCS increased by 0.31 t/(km~2·a) and 2.11 Tg/a, respectively. This study provides a high-resolution RCS dataset to support China’s achievement of carbon neutrality. |
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来源
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矿物岩石地球化学通报
,2022,41(5):956-964 【核心库】
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DOI
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10.19658/j.issn.1007-2802.2022.41.069
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关键词
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岩石
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化学风化
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碳汇
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碳循环
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时空格局
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中国
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地址
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贵州师范大学地理与环境科学学院, 贵阳, 550001
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中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵阳, 550081
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中国科学院第四纪科学与全球变化卓越创新中心, 中国科学院第四纪科学与全球变化卓越创新中心, 西安, 710061
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贵州省流域地理国情监测重点实验室, 贵州省流域地理国情监测重点实验室, 贵阳, 550018
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贵州大学资源与环境工程学院, 贵阳, 550025
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1007-2802 |
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学科
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自然地理学 |
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基金
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中国科学院战略性先导专项(B类)子课题
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中国科学院“西部之光”交叉团队项目
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中国科学院贵阳地球化学研究所环境地球化学国家重点实验室基金
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文献收藏号
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CSCD:7351744
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