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生态学杂志 ›› 2026, Vol. 45 ›› Issue (9): 2835-2844.doi: 10.13292/j.1000-4890.202609.018

• ·红树林湿地生态学专栏·(专栏组织专家:曹文志、王文卿、宋长春) • 上一篇    下一篇

海南小海潟湖退塘还湿区不同人工红树林群落土壤碳库特征及稳定性

钟丽爽,刘畅,陈月鹏,吴佳欣,黄耀,杨小波,张翔*   

  1. (海南大学生态学院, 保亭森林生态系统海南省野外科学观测研究站, 海口 570228)

  • 出版日期:2026-09-10 发布日期:2026-09-07

Soil carbon pool characteristics and stability of different artificial mangrove communities in the pondtowetland restored area of Hainan Xiaohai Lagoon.

ZHONG Lishuang, LIU Chang, CHEN Yuepeng, WU Jiaxin, HUANG Yao, YANG Xiaobo, ZHANG Xiang*   

  1. (Hainan Baoting Tropical Forest Ecosystem Observation and Research Station, School of Ecology, Hainan University, Haikou 570228, China).

  • Online:2026-09-10 Published:2026-09-07

摘要: 为探究退塘还湿红树林土壤碳库特征及稳定性,本研究以海南万宁小海潟湖退塘还湿区人工种植白骨壤、红海榄和海莲群落为对象,测定0~20和20~40 cm土层土壤理化性质、有机碳组分及碳库稳定性指标,分析其差异及影响因素。结果表明:3种群落土壤理化性质存在显著差异。0~20 cm土层土壤有机碳(SOC)以白骨壤群落最高,20~40 cm以红海榄群落最高;0~40 cm土壤有机碳储量(SOCS)表现为海莲(7.05±0.3 Mg C·hm-2)<白骨壤(12.93±1.02 Mg C·hm-2)<红海榄(15.33±1.55 Mg C·hm-2)。不同土层、不同植物群落的颗粒态有机碳(POC)/矿物结合态有机碳(MAOC)比值存在显著差异,其中海莲群落20~40 cm土层最高,说明该土层有机碳稳定程度最低;红海榄群落表层土壤易氧化有机碳(LOC)/土壤有机碳(SOC)比值、可溶性有机碳(DOC)/土壤有机碳(SOC)比值和微生物生物量碳(MBC)/土壤有机碳(SOC)比值较高,表明其有机碳周转较快。土壤容重和pH是影响有机碳组分变化的关键因子,其中容重解释度最高(R2=0.793,P<0.01),pH次之(R2=0.568,P<0.01)。综上,退塘还湿初期不同红树群落土壤碳库和有机碳稳定性差异显著,白骨壤和红海榄群落短期土壤固碳优势突出,研究结果可为滨海湿地生态恢复与碳汇管理提供科学支撑。


关键词: 人工恢复红树林, 退塘还湿, 活性有机碳, 有机碳稳定性, 土壤理化性质

Abstract: To investigate the characteristics and stability of soil carbon pools in mangroves restored through the conversion of aquaculture ponds to wetlands, three planted mangrove communities (Avicennia marina, Rhizophora stylosa, Bruguiera sexangula) were selected in the Xiaohai Lagoon of Wanning City, Hainan Province. Soil physicochemical properties, different organic carbon fractions and carbon pool stability indices in the 0-20 and 20-40 cm soil layers were measured to reveal the differences and controlling factors. The results showed there were significant differences in soil physicochemical properties among the three communities. Soil organic carbon (SOC) content in the 0-20 cm layer was highest in the A. marina community, while in the 20-40 cm layer, it was highest in the R. stylosa community. Total SOC storage (SOCS) in the 0-40 cm depth followed the order: B. sexangula (7.05±0.3 Mg C·hm-2) < A. marina (12.93±1.02 Mg C·hm-2) < R. stylosa (15.33±1.55 Mg C·hm-2). The ratios of particulate organic carbon (POC) to mineral-associated organic carbon (MAOC) varied significantly among soil layers and plant communities. The maximum ratio was observed in the 20-40 cm soil layer of B. sexangula community, indicating the weakest stability of soil organic carbon in this layer. R. stylosa had the highest LOC/SOC, DOC/SOC, and MBC/SOC ratios in the surface layer, reflecting faster organic carbon turnover. Soil bulk density and pH were the key factors influencing soil organic carbon fractions. RDA results showed that soil bulk density had the highest explanatory power (R2=0.793, P<0.01), followed by soil pH (R2=0.568, P < 0.01). In conclusion, in the early stage of converting fish ponds to wetlands, there are significant differences in soil carbon pools and organic carbon stability among different mangrove communities. A. marina and R. stylosa communities demonstrated a particularly prominent short-term advantage in soil carbon sequestration. These results provide a scientific basis for ecological restoration and carbon sink management of coastal wetlands.


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