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| 梅州市森林土壤全钾含量与分布特征* |
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杨海燕1, 魏 丹1, 张中瑞1, 谢萍萍1, 苏锦麟1, 谢镇东1, 黄振超1,2, 陶贝贝1,2
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1.广东省森林培育与保护利用重点实验室 / 广东省林业科学研究院;2.仲恺农业工程学院
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| 摘要: |
| 以梅州市为研究区域，通过开展林地土壤调查，结合 GIS 技术分析了梅州市不同深度土壤全钾
含量及其空间分布特征。结果表明：（1）梅州市林地土壤全钾含量平均值为 17.44 g/kg，各区（县）全
钾含量的平均值由大到小依次为蕉岭县、五华县、大埔县、丰顺县、梅江区、梅县区、平远县、兴宁县，
且蕉岭县和兴宁县土壤全钾含量与其他区（县）均存在显著差异（P<0.05）；（2）根据全国第二次土壤普
查规定的土壤养分分级标准，梅州市森林土壤全钾均值等级为Ⅲ级。从不同区（县）看，蕉岭县为Ⅱ级，
兴宁县为Ⅳ级，其他区县则为Ⅲ级；（3）不同深度土壤钾含量均表现出西低东高的空间格局。未来宜重
点关注兴宁县土壤钾元素含量及其动态变化，以及梅州市西部地区土壤肥力变化及其对植被生长的影响。 |
| 关键词: 全钾 空间分布 森林土壤 梅州市 |
| DOI： |
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| 基金项目:广东省生态林业建设项目“林地土壤调查”。 |
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| Total Kalium Concentration and Distribution of Forest Soil in Meizhou City |
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Yang haiyan1, Wei dan1, zhang zhongrui1, xie pingping1, su jinglin1, xie zhendong1, huang zhenchao1,2, tao beibei1,2
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1.Guangdong Provincial Key Laboratory of Silviculture，Protection and Utilization / Guangdong Academy of Forestry;2.Zhongkai University of Agriculture and Engineering
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| Abstract: |
| Taking Meizhou as research area, the total Kalium (TK) concentration and its spatial distribution
in different soil depths were analyzed based on forest soil survey and GIS technology. Our results show that:
(1) Average concentration of TK in Meizhou was 17.44 g/kg, and the average value of TK in each county from
large to small was Jiaoling, Wuhua, Dabu, Fengshun, Meijiang, Meixian, Pingyuan and Xingning, respectively.
Moreover, the concentration of TK in Jiaoling and Xingning was significantly higher (P<0.05) and significantly
lower (P<0.05) than other counties, respectively; (2) the average value of TK in Meizhou was Ⅲ according to
regulations of the Second National Soil Survey, and most counties were Ⅲ except Jiaoling and Xingning, which
was Ⅱ and Ⅳ , respectively; (3) the content of TK at different soil depths all showed a spatial pattern of low in
the west and high in the east. Our results could provide a reference for soil TK supply for Meizhou city. |
| Key words: total Kalium spatial pattern forest soil Meizhou |
