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Bedrock Type Mediates the Response of Vegetation Activity to Seasonal Precipitation in the Karst Forest

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  • Xiguang Yang

    (School of Forestry, Northeast Forestry University, Harbin 150040, China
    Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, Northeast Forestry University, Harbin 150040, China)

  • Xuebing Guan

    (School of Forestry, Northeast Forestry University, Harbin 150040, China
    Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, Northeast Forestry University, Harbin 150040, China)

  • Zihan Jiang

    (CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China)

Abstract

Global warming is expected to enhance the severity and frequency of drought in subtropical areas; thus, understanding how vegetation growth responds to precipitation is crucial to comprehending the impact of these changes on ecosystem services, such as carbon storage. However, vegetation activity in subtropical karst regions in Southwest China is hard to explain when we merely consider the influence of climate and soil factors. In this study, we extended traditional research by combining bedrock data we aim to investigate the role of bedrock and its interaction with precipitation on plant growth in the Guizhou Province of China. We analyzed the differences in the precipitation–vegetation growth relationship in noncarbonate and carbonate rock regions, assessing the sensitivity of vegetation from two lithological types to drought. The results reveal that although there are no significant differences in climate and soil parameters between carbonate and noncarbonate regions, the normalized difference vegetation index (NDVI) in carbonate regions is more strongly related to precipitation (carbonate region: R 2 = 0.67; noncarbonate region: R 2 = 0.37), while the spring greenness–precipitation relationship show is more stable in the carbonate region. Our results show that the vegetation activity in the carbonate region is more vulnerable during the drought period, highlighting that the vegetation dynamic was not only regulated by climatic factors, and bedrock-caused water stress should be taken into account.

Suggested Citation

  • Xiguang Yang & Xuebing Guan & Zihan Jiang, 2024. "Bedrock Type Mediates the Response of Vegetation Activity to Seasonal Precipitation in the Karst Forest," Sustainability, MDPI, vol. 16(3), pages 1-11, February.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:3:p:1281-:d:1332242
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    References listed on IDEAS

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    1. Scott L. Morford & Benjamin Z. Houlton & Randy A. Dahlgren, 2011. "Increased forest ecosystem carbon and nitrogen storage from nitrogen rich bedrock," Nature, Nature, vol. 477(7362), pages 78-81, September.
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