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林业资源管理 ›› 2022, Vol. 0 ›› Issue (3): 104-109.doi: 10.13466/j.cnki.lyzygl.2022.03.016

• 科学研究 • 上一篇    下一篇

海南黎母山片区外来树种对土壤理化性质的影响

方发之(), 黎肇家, 桂慧颖, 吴钟亲   

  1. 海南林业科学研究院(海南红树林研究院),海口 571100
  • 收稿日期:2022-04-28 修回日期:2022-05-23 出版日期:2022-06-28 发布日期:2022-08-04
  • 作者简介:方发之(1968-),男,海南临高人,副研究员,主要从事森林培育方面的研究。Email: fangfazhi@126.com

Effects of Exotic Tree Species on Soil Physicochemical Property in Limu Mountain of Hainan

FANG Fazhi(), LI Zhaojia, GUI Huiyin, WU Zhongqin   

  1. Hainan Academy of Forestry (Hainan Academy of Mangrove),Haikou 571100,China
  • Received:2022-04-28 Revised:2022-05-23 Online:2022-06-28 Published:2022-08-04

摘要:

为探究海南热带雨林国家公园主要外来树种对土壤理化性质的影响,采用五点取样法对外来树种群落与次生林群落土壤进行采样,用化学方法对土壤理化性质进行测定。结果表明:次生林群落土壤pH值为4.79,低于桉树群落,高于其余外来树种群落。次生林群落土壤有机质含量为31.01 g/kg,全氮、磷、钾含量分别为1.08,2.27,1.83 g/kg,均高于外来树种群落土壤有机质全氮磷钾。速效钾测定显示,次生林群落低于外来树种群落;但次生林群落铵态氮含量均高于外来树种群落。速效磷含量方面,次生林群落低于马占相思和桉树群落,高于加勒比松群落,与橡胶群落没有显著性差异。硝态氮测定显示,次生林群落与橡胶群落没有显著性差异。引入外来树种使土壤有机质和全氮钾磷总含量降低,游离态部分养分含量提升;桉树减弱土壤酸性,其他外来树种倾向加大土壤酸性趋势。

关键词: 黎母山, 外来树种, 土壤, pH值, 有机质, 氮磷钾

Abstract:

To explore the effects of main exotic tree species on soil physicochemical property in Hainan tropical rain forest national park.Soil sampling of exotic tree species community and secondary forest community was conducted by five-point sampling method,and determination of soil physicochemical property was conducted by chemical method.The results showed that the soil pH of secondary forest community was 4.79,which was lower than that of eucalyptus community and higher than that of secondary forest community.The soil organic matter content of secondary forest community was 31.01 g/kg,and the TN、TP、TK contents were 1.08 g/kg,2.27 g/kg and 1.83 g/kg,respectively,which were higher than those of exotic tree species community.Determination of ak showed that secondary forest community was lower than exotic tree species community.The NH4+ content of secondary forest community was higher than exotic tree species community.In ap content,secondary forest community was lower than Acacia mangium and eucalyptus community,higher than Pinus caribaeamorele community,and there was no significant difference with Hevea brasiliensis community.Determination of NO3- showed,there was no significant difference between secondary forest community and Hevea brasiliensis community.The introduction of exotic tree species reduced the contents of soil organic matter and total nitrogen,potassium and phosphorus,and increased the contents of free soil nutrients.Eucalyptus weakened soil acidity while other exotic species tended to increase soil acidity.

Key words: Limu Mountain, exotic tree species, soil, pH value, organic matter, NPK

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