梅州市森林土壤全钾含量与分布特征  

Total Kalium Concentration and Distribution of Forest Soil in Meizhou City

作　　者：杨海燕[1] 魏丹[1] 张中瑞 谢萍萍 苏锦麟 谢镇东 黄振超 陶贝贝 YANG Haiyan;WEI Dan;ZHANG Zhongrui;XIE Pingping;SU Jinlin;XIE Zhendong;HUANG Zhenchao;TAO Beibei(Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization/Guangdong Academy of Forestry,Guangzhou,Guangdong 510520,China;Zhongkai University of Agriculture and Engineering,Guangzhou,Guangdong 510225,China)

机构地区：[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,广东广州510520 [2]仲恺农业工程学院,广东广州510225

出　　处：《林业与环境科学》2022年第4期13-17,共5页Forestry and Environmental Science

基　　金：广东省生态林业建设项目“林地土壤调查”。

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。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 wasⅢaccording to regulations of the Second National Soil Survey,and most counties wereⅢexcept Jiaoling and Xingning,which wasⅡandⅣ,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.

关 键 词：全钾 空间分布 森林土壤 梅州市 

分 类 号：S714.2[农业科学—林学]