岩溶区土地利用变化对土壤有机碳与岩溶碳汇的影响研究进展

发布时间：2018-06-08 15:31

本文选题：土地利用变化 + 土壤有机碳　；参考：《生态学杂志》2017年09期

【摘要】：土地利用变化对陆地生态系统碳循环的影响是当今全球碳循环和气候变化研究的热点。土地利用变化对土壤有机碳含量、组分及稳定性产生影响,从而影响土壤CO_2,进而控制岩溶地质过程的碳汇效应。本文综述了岩溶区土地利用变化对土壤有机碳与岩溶地质过程的影响,阐明了岩溶区土地利用变化对土壤有机碳及其组分影响的过程与机理,土地利用变化对岩溶地质过程影响的土壤CO_2浓度调控机制、水循环影响及无机酸干扰等影响机制。提出了土壤固碳的团聚体归宿和分配,团聚体物理保护机制及钙的化学稳定机制是当前岩溶土壤有机碳深化的方向;土壤CO_2、水循环和无机酸在土地利用变化过程中以何种关系共同影响岩溶碳汇强度;水生光合作用利用DIC形成的稳定有机质与DIC、AOC通量的关系及其对土地利用变化的响应机理是岩溶碳循环前沿领域;而石漠化治理对岩溶碳循环的影响及相关固碳增汇技术的研究是需要重视的工作。
[Abstract]:The impact of land use change on the carbon cycle of terrestrial ecosystems is a hot topic in the global carbon cycle and climate change research. The change of land use affects the content, composition and stability of soil organic carbon, thus affecting soil CO _ 2, and then controlling the carbon sink effect of karst geological process. In this paper, the influence of land use change on soil organic carbon and karst geological process in karst area is summarized, and the process and mechanism of the influence of land use change on soil organic carbon and its components in karst area are expounded. The effects of land use change on karst geological processes include soil CO2 concentration regulation mechanism, water cycle effect and inorganic acid interference mechanism. It is pointed out that the aggregate fate and distribution of soil carbon sequestration, the physical protection mechanism of aggregate and the chemical stabilization mechanism of calcium are the direction of deepening organic carbon in karst soil. Soil CO2, the relationship between water cycle and inorganic acid in the process of land use change affects the intensity of karst carbon sink. The relationship between stable organic matter formed by water photosynthesis and DIC-AOC flux and its response mechanism to land use change are the frontier of karst carbon cycle. The influence of rocky desertification control on karst carbon cycle and the research of carbon sequestration and sequestration techniques are important work to be paid attention to.
【作者单位】：贵州师范大学喀斯特研究院/国家喀斯特石漠化防治工程技术研究中心;西南大学地理科学学院;
【基金】：十三五”国家重点研发计划课题(2016YFC0502603、2016YFC0502606) 国家自然科学基金项目(41601584、41673129) 贵州省科学技术基金(黔科合J字[2015]2111号) 贵州省科技合作计划项目(黔科合LH字[2015]7775号) 贵州师范大学2015年博士科研启动项目(600204)资助
【分类号】：S153.6

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