Characterization of Changes in Soil Organic Carbon Fractions of <i>Phyllostachys edulis</i> Interplanted with <i>Sarcandra glabra</i>

xiangyang Xu; zedong Chen; xiaoping Zhang; guibin Gao; zhiyuan Huang; zhizhuang Wu

doi:10.12356/j.2096-8884.2024-0020

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xiangyang Xu, zedong Chen, xiaoping Zhang, guibin Gao, zhiyuan Huang, zhizhuang Wu. Characterization of Changes in Soil Organic Carbon Fractions of Phyllostachys edulis Interplanted with Sarcandra glabra[J]. Terrestrial Ecosystem and Conservation. doi: 10.12356/j.2096-8884.2024-0020

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xiangyang Xu, zedong Chen, xiaoping Zhang, guibin Gao, zhiyuan Huang, zhizhuang Wu. Characterization of Changes in Soil Organic Carbon Fractions of Phyllostachys edulis Interplanted with Sarcandra glabra[J]. Terrestrial Ecosystem and Conservation. doi: 10.12356/j.2096-8884.2024-0020

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Characterization of Changes in Soil Organic Carbon Fractions of Phyllostachys edulis Interplanted with Sarcandra glabra

doi: 10.12356/j.2096-8884.2024-0020

1.
China National Bamboo Research Center, Key Laboratory of State Forestry and Grassland Administration on Bamboo Forest Ecology and Resource Utilization, Hangzhou 310012
2.
Nanjing Forestry University, the College of Landscape Architecture, Nanjing 210037

Received Date: 2024-03-02
Accepted Date: 2024-04-23

Abstract

Abstract

Objective The changes of soil organic carbon content and carbon pool management index caused by intercropping Sarcandra glabra under Phyllostachys edulis forest were investigated to clarify the disturbance degree of organic carbon stability of bamboo ecosystem by composite management, and provide scientific basis for formulating sustainable management strategy with high comprehensive benefits. Method The surface soil (0-20cm) of intercropping Sarcandra glabra under Phyllostachys edulis was taken as the study object (SG), and the surface soil of adjacent pure Phyllostachys edulis was set as the control (CK). Soil organic carbon (SOC), easily oxidizable carbon (EOC), microbial biomass carbon (MBC), dissolved organic carbon (DOC), Fe-Al-bound organic carbon (Fe(Al)-SOC) and Ca-bound organic carbon (Ca-SOC) contents were analyzed, the carbon pool management index was quantified. Result Compared with pure Phyllostachys edulis forest, intercropping Sarcandra glabra soil organic carbon content increased by 51.3%, and the contents of soil active organic carbon components (EOC, MBC, DOC) and their proportion to soil organic carbon increased significantly, the contents of soil stable organic carbon fractions (Fe(Al)-SOC and Ca-SOC) significantly increased, while their proportions to soil organic carbon significantly decreased. In addition, compared with pure Phyllostachys edulis forest, intercropping Sarcandra glabrasoil carbon pool activity (L) and carbon pool management index (CPMI) significantly increased, while coefficient of oxidative stability (K_os) significantly decreased. RDA analysis showed that soil bulk density (BD) was a key environmental factor affecting soil organic carbon and its components. The results of correlation analysis showed that bulk density was significantly negatively correlated with soil organic carbon and its components, and available nitrogen (AN) and available phosphorus (AP) were significantly positively correlated with soil organic carbon and its components Conclusion Intercropping Sarcandra glabrasoil under Phyllostachys edulis forest increased the content of soil organic carbon and its components, increased the relative content of active organic carbon components, and decreased the relative content of stable organic carbon components, which was conducive to the regeneration and cycling of soil carbon pool.
- organic carbon component,
- carbon pool management index,
- interplanting under forests,
- Phyllostachys edulis forests,
- Sarcandra glabra

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References(41)

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