海南乐东3种不同森林类型样地土壤化学性质分析

Analysis on Soil Chemical Properties of Three Different Forest Types in Ledong of Hainan Province

[目的]了解海南乐东县木麻黄纯林、大叶相思林和桉树林3个不同森林样地土壤化学性质的特征和变化。[方法]以海南乐东县3个不同森林类型土壌为研究对象,分析了不同森林类型土壤层化学性质,并进行比较分析。[结果]3种森林类型土壤p H为5.17~6.99,森林有机质含量为0.64~10.69 g/kg,全氮含量为0.03~0.70 g/kg,全磷含量为0.01~0.03 g/kg,全钾含量为0.88~4.29 g/kg,有效磷含量为1.29~12.38 mg/kg,速效钾含量为2.17~32.79 mg/kg,硝态氮含量为0.18~6.82 mg/kg,铵态氮含量为0.91~8.56 mg/kg。[结论]该研究为乐东县人工林经营的可持续性提供参考。

[Objective]The research aimed to understand the characteristics and changes of soil chemical properties in three different forest samples of Casuarina equisetifolia,Acacia auriculiformis and Eucalyptus in Ledong County of Hainan Province.[Method]Taking soil samples of three different forest types in Ledong County of Hainan Province as the research object,the chemical properties of soil layers of different forest types were analyzed and compared.[Result]The soil pH of three forest types ranged from 5.17 to 6.99,the contents of organic matter in forest ranged from 0.64 to 10.69 g/kg,the total nitrogen content ranged from 0.03 to 0.70 g/kg,total phosphorus content ranged from 0.01 to 0.03 g/kg,total potassium content ranged from 0.88 to 4.29 g/kg,available phosphorous content ranged from 1.29 to 12.38 mg/kg,available potassium content ranged from 2.17 to 32.79 mg/kg,nitrate nitrogen content ranged from 0.18 to 6.82 mg/kg,ammonium nitrogen content ranged from 0.91 to 8.56 mg/kg.[Conclusion]The study provides a reference for the sustainability of plantation management in Ledong County.