| 中国岩溶碳汇通量估算与人工干预增汇途径 |
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| 作者姓名： | 张春来 黄芬 蒲俊兵 曹建华 |
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| 作者单位： | 1.中国地质科学院岩溶地质研究所,自然资源部/广西岩溶动力学重点实验室,广西 桂林 541004; 2.联合国科教文组织国际岩溶研究中心,广西 桂林 541004 |
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| 基金项目： | 国家自然科学基金“漓江流域岩溶碳循环与水循环耦合机制及模型研究(编号: 41530316)”、中国地质调查局“长江珠江黄河岩溶流域碳循环综合环境地质调查(编号: DD20160305)”和广西自然科学基金“广西岩溶区不同土地利用方式根际土1.4 nm黏土矿物特征及其影响因素研究(编号: 2015GXNSFBA139202)”项目联合资助 |
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| 摘 要： | 中国是岩溶大国,岩溶作用吸收土壤或大气CO2形成溶解无机碳,并随河流排向海洋,这是陆地碳循环的重要组成部分。中国地质调查局从2009年开始对岩溶碳汇进行探索性调查,基本查明了岩溶碳汇的作用机理、影响因素和计量方法。研究表明: 碳酸盐岩溶蚀试片、径流-水化学和回归模型等方法均揭示了中国岩溶碳汇潜力巨大; 植被恢复、土壤改良、外源水灌溉和水生植物培育等是人工干预增加岩溶碳汇的重要途径; 流域尺度岩溶碳循环及碳汇效应调查技术的应用,助力取得了岩溶碳循环地质调查和碳汇效应评价方面的理论、技术和平台建设等系列成果。值得注意的是,岩溶碳汇计量、核查和人工干预固碳增汇试验示范等方面还面临巨大挑战,这需要在“十四五”期间及以后的研究中不断攻关、完善,从而满足地质碳汇服务碳中和目标的需求。
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| 关 键 词： | 岩溶碳汇 碳循环 碳通量 增汇 人工干预 地质调查 |
| 收稿时间： | 2021-06-28 |
Estimation of karst carbon sink fluxes and manual intervention to increase carbon sinks in China |
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| Authors: | ZHANG Chunlai HUANG Fen PU Junbing CAO Jianhua |
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| Institution: | 1. Institute of Karst Geology, Chinese Academy of Geological Sciences, Key Laboratory of Karst Dynamics (Ministry of Natural Resources & Guangxi), Guangxi Guilin 541004, China; 2. International Research Center on Karst Under the Auspices of UNESCO, Guangxi Guilin 541004, China |
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| Abstract: | China is a country with a large area of karst. It is an important part of the terrestrial carbon cycle that the absorption of CO2 from soil or atmosphere by karstification would form dissolved inorganic carbon and discharge it to the ocean along rivers. The mechanism, influencing factors and measurement methods of karst carbon sinks have been ascertained by China Geological Survey since the exploratory investigation of karst carbon sinks in 2009.`The results show that the huge potential of karst carbon sinks in China has been revealed by the carbonate rock dissolution tablets, runoff-water chemistry and regression models. The important measures of manual intervention to increase karst carbon sinks include vegetation restoration, soil improvement, allogenic water irrigation, and aquatic plants cultivation. The application of basin-scale karst carbon cycle and carbon sink effect investigation technology has promoted a series of results in the theory, investigation, monitoring technology and platform construction of the karst carbon cycle and carbon sink effect evaluation by geological survey. However, there are still major challenges in the measurement, verification, and manual intervention of karst carbon sinks to sequester and increase carbon sinks, which would need to be tackled and improved during the 14th Five-Year Plan period to meet the goal of geological carbon sinks serving carbon neutrality. |
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| Keywords: | karst carbon sink carbon cycle carbon flux increasing carbon sinks manual intervention geological survey |
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