海口市海防林不同类型森林土壤肥力差异分析

以海口市沿海3种不同森林类型植被为研究对象,釆用典型样地法,分析研究3种人工林(木麻黄林、加勒比松林、大叶相思林)土壤养分状况。结果表明,3种不同森林类型植被土壤属于弱酸性,低氮肥力土壤,全磷、全钾含量都很低;木麻黄林和加勒比松林土壤有效磷含量丰富,大叶相思土壤有效磷含量低;木麻黄林和大叶相思林土壤速效钾含量低,加勒比松林土壤速效钾含量中等;木麻黄林和加勒比松林土壤硝态氮和土壤铵态氮含量低,相思林土壤铵态氮和硝态氮较高。

Soil Fertility Differences of Different Coastal Protective forest in Haikou

Taking three different types of forest vegetation along the coast of Haikou as the research object, studied using typical plot methods and analyzed the soil nutrient status of three artificial forests (Casuarina equisetifolia , Pinus caribaea Morelet and Acacia ). The results showed that: the soils of the three different types of forest vegetation were weakly acidic, total nitrogen was low-nitrogen fertile soil, and total phosphorus and total potassium were very low. Casuarina equisetifolia and Caribbean pine forests were rich in available phosphorus and soil Acacia Low, the available K content in the soil of Casuarina equisetifolia forest and Acacia forest is low, and the available K content in the soil of Caribbean pine forest is medium; Nitrate nitrogen is higher.