CAJ | 학술논문

以广西壮族自治区马山县为研究区,在野外调查、室内实验测试获取182个土壤水分含量数据的基础上,采用半方差函数和 Moran’s I 统计量对研究区域土壤水分含量的空间自相关关系、空间相关尺度和空间分布规律进行了研究。结果表明：(1)研究区域土壤水含量平均值为16.97%,受结构性因素和随机因素共同作用,土壤水分含量具有中等强度的空间异质性；(2)研究区域土壤水分含量 Moran’s I 指数为0.423,表明研究区内土壤水分含量存在空间自相关性,在0~21 km 和31~34 km 范围内土壤水分含量自相关性为正,在21.7~31 km 和34~45 km 范围内自相关性为负；(3)Lisa 聚类图表明,土壤水分含量空间聚集区和空间孤立区相伴存在,其中“高—高”空间聚集主要分布在马山县东北部,“低—低”聚集区主要分布在东南部。“低—低”聚集区和“高—低”孤立区土壤水分含量缺乏风险大。
이엄서장족자치구마산현위연구구,재야외조사、실내실험측시획취182개토양수분함량수거적기출상,채용반방차함수화 Moran’s I 통계량대연구구역토양수분함량적공간자상관관계、공간상관척도화공간분포규률진행료연구。결과표명：(1)연구구역토양수함량평균치위16.97%,수결구성인소화수궤인소공동작용,토양수분함량구유중등강도적공간이질성；(2)연구구역토양수분함량 Moran’s I 지수위0.423,표명연구구내토양수분함량존재공간자상관성,재0~21 km 화31~34 km 범위내토양수분함량자상관성위정,재21.7~31 km 화34~45 km 범위내자상관성위부；(3)Lisa 취류도표명,토양수분함량공간취집구화공간고립구상반존재,기중“고—고”공간취집주요분포재마산현동북부,“저—저”취집구주요분포재동남부。“저—저”취집구화“고—저”고립구토양수분함량결핍풍험대。
Mashan county,located in the middle Guangxi Zhuang Autonomous Region,southwestern China, was selected as the study area.Based on the plentiful information from field surveys,soil sampling and labo-ratory analysis,we were studied the spatial autocorrelation coefficients,correlation distances and spatial pat-terns of soil water content in topsoil (0 – 20 cm)using semi-variances and Moran’s I statistics.The results show that the mean value of soil water content is 1 6.97%.Soil water content shows a moderate spatial auto-correlation within the distance of 78.8 km,which is affected by the constitutive and random factors.(2)Mo-ran index of soil water content in the study area is 0.43,suggesting that the soil water content possesses spa-tial autocorrelation.In the ranges of 0-21.7 km and 31-34 km,the values of Moran′s I of soil water con-tent are greater than 0,implying positive spatial autocorrelation;while in the ranges of 21.7-31 km and 34-45 km,the values are negative,indicating negative spatial autocorrelation.Lisa cluster maps show that there are spatial aggregation areas and spatial isolated areas of the soil water content.The “high-high”spatial aggregation areas cluster in the northeast of Mashan county and “low-low”spatial aggregation clustered in the southeast.There are bigger risk of short of soil water content in the “low-low”spatial aggregation and“high-low”spatial isolated areas.