CAJ | 학술논문

应用地统计学结合地理信息系统研究了广东省东莞市森林表层土壤（0～25 cm）有机质、全氮、全钾、全磷和pH值等5种土壤肥力指标的空间变异规律。研究表明：全磷、全钾、有机质、全氮为中等变异；pH值属于弱变异；全钾、pH值的变异函数曲线的理论模型符合球状模型，有机质、全氮、全磷适用模型为指数模型；全磷、全钾、有机质、pH值具有中等空间相关性，全氮的空间相关性较弱；5种肥力指标的空间自相关范围存在明显差异，变化范围为2218～19297 m。用普通克立格法进行最优内插，得各肥力指标含量分布图，并分析了各土壤肥力指标的分布状态。
응용지통계학결합지리신식계통연구료광동성동완시삼림표층토양（0～25 cm）유궤질、전담、전갑、전린화pH치등5충토양비력지표적공간변이규률。연구표명：전린、전갑、유궤질、전담위중등변이；pH치속우약변이；전갑、pH치적변이함수곡선적이론모형부합구상모형，유궤질、전담、전린괄용모형위지수모형；전린、전갑、유궤질、pH치구유중등공간상관성，전담적공간상관성교약；5충비력지표적공간자상관범위존재명현차이，변화범위위2218～19297 m。용보통극립격법진행최우내삽，득각비력지표함량분포도，병분석료각토양비력지표적분포상태。
Geostatistics combined with geographic information systems (GIS)was applied to analyze spatial variability of forest soil fertility in top layer (0-25 cm)soil in Dongguan,Guangdong.Soil fertility index in this study included soil organic matter (SOM),total N,total K,total P and pH value.The results showed that:the total P,total K,SOM,total N is in medium variation and pH is in weak variation;the semivariograms of SOM,to-tal N,total P were best described by exponential model,while total K and pH value were best described spherical model.Soil fertility had moderate spatial correlation except total N,which had weak spatial correlation;their spa-tial heterogeneity degree was obvious different in the range of 2 21 8 to 1 9 297 m.The distributing map of soil fertili-ty were drawn by using ordinary Kriging,and the distributing results of soil fertility were analyzed.The results can be applied in forest ecological construction of Dongguan.