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林业资源管理 ›› 2021›› Issue (6): 97-104.doi: 10.13466/j.cnki.lyzygl.2021.06.016

• 科学研究 • 上一篇    下一篇

东寨港不同植物群落土壤微生物量碳氮及养分特征

陈小花(), 陈宗铸(), 雷金睿, 吴庭天, 李苑菱   

  1. 1.海南省林业科学研究院(海南省红树林研究院),海口 571100
    2.海南省热带林业资源监测与应用重点实验室(筹),海口 571100
    3.海口市湿地保护工程技术研究开发中心,海口 571100
  • 收稿日期:2021-09-10 修回日期:2021-10-29 出版日期:2021-12-28 发布日期:2022-01-12
  • 通讯作者: 陈宗铸
  • 作者简介:陈小花(1989-),女,海南屯昌人,助理研究员,研究方向为森林生态。Email: 965819833@qq.com
  • 基金资助:
    海南省林业科学研究院(海南省红树林研究院)基础性科研工作(KYYS-2021-04);省属科研院所技术创新专项“基于高光谱遥感的海南岛红树林典型群落定量反演研究”(jscx202023)

Soil Microbial Biomass Carbon,Nitrogen and Nutrient Characteristics of Different Plant Communities in Dongzhai Port

CHEN Xiaohua(), CHEN Zongzhu(), LEI Jinrui, WU Tingtian, LI Yuanling   

  1. 1. Hainan Academy of Forestry(Hainan Academy of Mangrove),Haikou 571100,China
    2. Hainan Key Laboratory of Monitoring and Application of Tropical Forestry Resources (under preparation),Haikou 571100,China
    3. Haikou Wetland Protection Engineering Technology Research and Development Center,Haikou 571100,China
  • Received:2021-09-10 Revised:2021-10-29 Online:2021-12-28 Published:2022-01-12
  • Contact: CHEN Zongzhu

摘要:

对海南东寨港红树林不同植物群落的土壤理化性质、土壤微生物量生物量碳氮及养分含量进行分析。结果表明:1)土壤微生物生物量碳(MBC)和土壤微生物生物量氮(MBN)变化范围分别为135.83~1 171.24 mg/kg和35.13~232.89 mg/kg,不同植物群落间MBC和MBN含量变化规律基本一致且均存在显著差异,其中白骨壤和红海榄群落土壤MBC和MBN含量最低;2)东寨港红树林湿地土壤TC∶TN∶TP均值为76∶4∶1,土壤微生物生物量MBC∶MBN均值为5∶1,不同位置不同树种组成的群落土壤养分和微生物生物量碳氮及其化学计量比存在显著差异;3)相关性分析表明,东寨港红树林湿地土壤微生物生物量碳氮与土壤养分存在紧密关系,能作为该区土壤碳氮变化的早期生物指示指标。

关键词: 红树林湿地, 土壤微生物量碳氮, 化学计量比, 东寨港

Abstract:

This paper conducted the analysis of soil physical and chemical properties,soil microbial biomass,carbon and nitrogen,and nutrient content of different mangrove plant communities in Dongzhai Port. The results showed that:1) The variation ranges of soil microbial biomass carbon and nitrogen (MBC and MBN) were 135.83-1 171.24 mg/kg and 35.13-232.89 mg/kg,respectively. The variation laws of MBC and MBN contents among different plant communities were basically the same and there were significant differences. Among them,the soil MBC and MBN contents of Avicennia marina and Rhizophora stylosa communities were the lowest. 2)The average soil TC∶TN∶TP of Dongzhai Port was 76∶4∶1,average MBC∶MBN was 5∶1. There were significant differences in soil nutrients,microbial biomass carbon and nitrogen,and in their stoichiometric ratios among communities with different tree species at different locations.3)Correlation analysis showed that there was a close relationship between soil microbial biomass carbon and nitrogen and soil nutrients in Dongzhai Port mangrove wetland,which could be used as an early biological indicator of soil carbon and nitrogen change in this area.

Key words: mangrove wetland, soil microbial biomass carbon and nitrogen, stoichiometry, Dongzhai Port

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