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向本科,黄茵茵,王晓丹,尹连政,段丹丹.海南陵水红树林修复对沉积物有机碳积累的影响[J].广西科学,2026,33(2):270-280. [点击复制]
- XIANG Benke,HUANG Yinyin,WANG Xiaodan,YIN Lianzheng,DUAN Dandan.Effects of Mangrove Restoration on Organic Carbon Accumulation in Sediments of Lingshui,Hainan[J].Guangxi Sciences,2026,33(2):270-280. [点击复制]
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| 海南陵水红树林修复对沉积物有机碳积累的影响 |
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向本科1, 黄茵茵1, 王晓丹1, 尹连政2, 段丹丹1
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| (1.海南师范大学生命科学学院, 热带岛屿生态学教育部重点实验室, 海南海口 571158;2.海南大学, 南海海洋资源利用国家重点实验室, 海南海口 570228) |
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| 摘要: |
| 为探究红树林修复对沉积物有机碳积累的影响及其与微生物碳代谢的关系，本研究以海南陵水红树林国家湿地公园的修复林(Restoration Forest,RF)与原生林(Primary Forest,PF)为研究对象，测定沉积物总有机碳(TOC)、微生物碳代谢活性、碳源利用特征等指标，并结合沉积物理化性质与环境因子开展综合分析。结果表明,①红树林修复林的沉积物TOC含量、总氮(TN)含量，以及微生物的丰富度指数均高于原生林沉积物。②修复7年的红树林沉积物TOC含量和TN含量显著高于修复5年和修复3年的红树林沉积物。且修复7年的红树林沉积物微生物通过增强β-甲基-D-葡萄糖苷、D-半乳糖酸γ-内酯、D-木糖和D-甘露醇的代谢活性，提升对碳水化合物类(CH)碳源的利用；通过增强吐温40、吐温80和肝糖的代谢活性，促进对多聚物类(PM)碳源的利用；通过增强腐胺的代谢活性，强化对胺类(AM)碳源的利用。③主成分分析(PCA)表明，PC1主要为碳水化合物类碳源的利用特征，解释总体数据55.3%的变异；PC2主要为羧酸类碳源，解释总体数据17.6%的变异，两个主成分是引起微生物碳代谢差异的主要原因。④冗余分析表明，TOC含量(R2=0.97，P=0.003)、TN含量(R2=0.83,P=0.005)、碳氮比(C/N，R2=0.94，P=0.006)、总氢(TH)含量(R2=0.88,P=0.005)及pH值(R2=0.79，P=0.005)是影响微生物碳源利用的主要因素。研究结果初步阐明了红树林修复过程中沉积物有机碳积累与微生物代谢功能的协同作用机制，为红树林的修复和保护提供了重要的理论依据。 |
| 关键词: 红树林 修复 沉积物有机碳 微生物 碳代谢 |
| DOI：10.13656/j.cnki.gxkx.20260603.006 |
| 投稿时间：2026-02-14修订日期：2026-03-23 |
| 基金项目:国家自然科学基金地区基金项目(42363010)，海南省自然科学基金面上项目(422MS061)和海南省自然科学基金高层次人才项目(425RC757)资助。 |
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| Effects of Mangrove Restoration on Organic Carbon Accumulation in Sediments of Lingshui,Hainan |
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XIANG Benke1, HUANG Yinyin1, WANG Xiaodan1, YIN Lianzheng2, DUAN Dandan1
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| (1.Key Laboratory of Tropical Island Ecology, Ministry of Education, College of Life Sciences, Hainan Normal University, Haikou, Hainan, 571158, China;2.State Key Laboratory of Marine Resources Utilization in South China Sea, Hainan University, Haikou, Hainan, 570228, China) |
| Abstract: |
| To investigate the effect of mangrove restoration on sediment organic carbon accumulation and its relationship with microbial carbon metabolism,this study selected the Restoration Forest (RF) and Primary Forest (PF) within the Lingshui Mangrove National Wetland Park as study subjects.The indicators such as sediment Total Organic Carbon (TOC),microbial carbon metabolic activity,and carbon source utilization characteristics were measured,which were integrated with the physical and chemical properties of sediments and environmental factors for comprehensive analysis.The results are summarized as follows:①The restoration forests exhibited higher sediment TOC,Total Nitrogen (TN) content,and microbial richness index than the primary forest.②Both sediment TOC content and TN content in the forest restored for 7 years were significantly higher than those of forests restored for 5 and 3 years.Microorganisms in the sediment of the forest restored for 7 years enhanced utilization of carbohydrate (CH) carbon sources by increasing metabolic activities for β-methyl-D-glucoside,D-galacturonic acid γ-lactone,D-xylose,and D-mannitol.They increased the metabolic activities for Tween 40,Tween 80,and glycogen to enhance utilization of polymer (PM) carbon sources.In addition,they increased the putrescine metabolic activity to enhance utilization of amine (AM) carbon sources.③Principal Component Analysis (PCA) revealed that PC1 was dominated by carbohydrate carbon sources,explaining 55.3% of the total variation,while PC2 was dominated by carboxylic acid carbon sources,explaining 17.6% of the total variation.The two principal components represented the primary contributors to microbial carbon metabolism differences.④Redundancy analysis indicated that TOC content (R2=0.97,P=0.003),TN content (R2=0.83,P=0.005),carbon/nitrogen ratio (C/N,R2=0.94,P=0.006),Total Hydrogen (TH) content (R2=0.88,P=0.005),and pH value (R2=0.79,P=0.005) were the key factors driving microbial carbon utilization.This study elucidates the synergistic mechanism between sediment organic carbon accumulation and microbial metabolism in mangrove restoration,providing crucial theoretical support for mangrove restoration and conservation. |
| Key words: mangrove restoration sedimentary organic carbon microorganism carbon metabolism |
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