Effect of vegetation on carbon sequestration in karst systems-a critical review

doi:10.13745/j.esf.sf.2022.9.4

Abstract

Abstract:

Vegetation-the link between atmosphere, water, soil and rock-is a key influencing factor of carbon sequestration via rock weathering. Understanding their relationship can help to better estimate the carbon flux in karst systems and assess the effect of karsification on the reduction of atmospheric CO₂ emissions. This review summarizes and evaluates the latest research findings on the impact of vegetation succession on karst carbon sink, the control of vegetation on the karstification process in terms of biological effects, soil properties, climate, runoff changes and hydrogeological structure of karst systems, and the impact of vegetation on water cycle during the karstification process. Finally, future research directions are proposed, which include the vertical structure of karst critical zone, the effect of vegetation on carbon sequestration in karst watershed during different precipitation processes, the relationship between microstructure and hydrological effects, and the impact of vegetation succession on carbon sequestration in karst systems at watershed scale plus insights from human interventions.

Key words: carbon neutrality, karst carbon sequestration, vegetation, water cycle, karst critical zone

CLC Number:

YU Shi, PU Junbing, LIU Fan, YANG Hui. Effect of vegetation on carbon sequestration in karst systems-a critical review[J]. Earth Science Frontiers, 2023, 30(4): 418-428.

Figures/Tables 4

Fig.1 Main influencing factors of the karstification process at the limestone-soil interface. Adapted from [10].

Fig.2 The terrestrial carbon cycle. Adapted from [12].

Fig.3 Combined effects of climate change and vegetation restoration on rock weathering process. Adapted from [44].

Fig.4 Structural model of key karst zones. Adapted from [69].

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