| 陈 灿，洪 滔，林勇明，等.沿海湿地松防护林土壤pH 值空间变异分析[J].广东农业科学,2015,42(9):45-50 |
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沿海湿地松防护林土壤pH 值空间变异分析 |
| Spatial variation analysis on soil pH values of coastalprotection forest of Pinus elliottii E. |
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| DOI： |
| 中文关键词: 湿地松 沿海防护林 土壤pH 值 空间变异 地统计学 |
| 英文关键词: Pinus elliottii E. coastal protection forest soil pH spatial variation geo-statistics |
| 基金项目: |
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| 摘要点击次数: 1559 |
| 全文下载次数: 731 |
| 中文摘要: |
| ：以福建省福州市22 年生沿海湿地松林地土壤为研究对象，运用野外样地法和地统计学方法，结
合实验测定并分析了0~20（Ⅰ）、20~40（Ⅱ）、40~60 cm（Ⅲ）土层pH 值的统计学分布和空间变异特征。结果表
明：该湿地松林土壤pH 值整体呈强酸性，Ⅰ、Ⅱ、Ⅲ土层pH 值分别为4.59、4.86 和4.90，相应的变异系数分别为
5.75%、5.01% 和7.63%；Ⅰ、Ⅱ、Ⅲ土层pH 值块金效应值分别为0.859、0.136 和1.000；空间变异最优拟合模型分
别为线性有基台值模型、指数模型和线性有基台值模型。克里格最优内插值分析表明，Ⅰ层和Ⅲ层土壤pH 值主
要由结构因素决定，Ⅱ层土壤pH 值则受林分部分影响；该林土壤酸化主要受土壤母质、酸雨和林分等因素共同
作用。 |
| 英文摘要: |
| The descriptive statistics and spatial variation of pH values in the soil of a 22 years old coastal forest ofPinus elliottii E. in Fuzhou were analyzed by the method of geo-statistics after field work. The results showed that the soilwas strongly acidic，with 4.59，4.86 and 4.90 of pH values as well as 5.75%，5.01% and 7.63% of variable coefficients inthe depth of 0-20 cm（Layer Ⅰ），20-40 cm（Layer Ⅱ）and 40-60 cm（Layer Ⅲ）in the soil，respectively. The nuggetvalues were 0.859，0.136 and 1.000，respectively. And the optimal spatial autocorrelation models of pH values in LayerⅠ，Ⅱ and Ⅲ were liner model with sill，exponential model and liner model with sill，respectively. The results of Krigingoptimal interpolation values indicated that soil pH values in Layer Ⅰ and Ⅲ were mainly influenced by structural factorswhile the ones in Layer Ⅱ were partly affected by forest factors. The soil acidity may be due to several reasons such assoil parent material，air acid deposition，soil water content and forests. |
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