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| 中国喀斯特石漠化地区植物群落对土壤有机碳及其组分影响的研究进展 |
| Recent advances in studies of the effects of plant communities on soil organic carbon and its fractions in Karst rocky desertification areas of China |
| 投稿时间：2025-07-15 修订日期：2025-09-23 |
| DOI： |
| 中文关键词: 喀斯特，植物群落，土壤有机碳，碳组分，碳库，输入-保护 |
| 英文关键词: karst plant communities soil organic carbon carbon fractions carbon pool input-protection |
| 基金项目:云南省科技计划项目(202203AC100002) |
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| 中文摘要: |
| 本文系统梳理了中国喀斯特石漠化区典型群落类型对SOC总量与组分动态变化的影响,对比分析了天然林、次生灌丛、人工经济林,耕地等典型植被恢复群落中的SOC储量变化情况,并梳理归纳出不同有机碳组分(水溶性有机碳,易氧化碳,颗粒态碳,轻质碳,矿物结合态碳,钙结合态碳等)在各个恢复阶段下的分布状况及其质量占比规律,总结了碳组分在演替过程中的演变趋势。研究提出“输入-保护”机制模型,深入探析喀斯特石漠化地区植被演替进程中SOC及其各组分的响应特征和发展趋势。其中,地上凋落物、地下根系残体及其代谢产物、微生物碳泵,共同向土壤持续输入优质有机质,构成碳库“输入”的核心来源；同时,从化学保护、物理保护和生物保护三个维度分别阐述了碳库“保护”的机制,有效促进输入碳库的稳定和长期贮存。该研究给喀斯特石漠化地区生态改良和土壤碳汇管理提供了关键的理论支撑和实际指引。 |
| 英文摘要: |
| This study systematically reviewed the effects of typical community types in the karst rocky desertification areas of China on the dynamics of total soil organic carbon (SOC) and its fractions. It compared and analyzed the changes in SOC stocks among typical vegetation restoration communities, including natural forests, secondary shrublands, artificial economic forests, and croplands. Furthermore, it summarized the distribution patterns and mass proportions of different SOC fractions (such as dissolved organic carbon, easily oxidizable carbon, particulate organic carbon, light fraction organic carbon, mineral-associated organic carbon, and calcium-bound organic carbon) at various restoration stages, and concluded the evolutionary trends of these carbon fractions during the successional processes. The study proposed an “input–protection” mechanism model to deeply explore the response characteristics and developmental trends of SOC and its fractions during vegetation succession in karst rocky desertification areas. In this model, aboveground litter, belowground root residues and their metabolites, and microbial carbon pumps jointly provide continuous high-quality organic matter inputs to the soil, serving as the core sources of carbon pool “inputs.” Meanwhile, the mechanisms of carbon pool “protection” were elucidated from the perspectives of chemical, physical, and biological protection, effectively promoting the stabilization and long-term storage of inputted carbon. This research provides crucial theoretical support and practical guidance for ecological improvement and soil carbon sink management in karst rocky desertification areas |
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