【摘要】 本文基于地质统计学和空间分析知识,对北京通州区域内土壤水分的分布特征、空间变化趋势、空间相关和各向异性等根据土壤墒情调查数据进行分析。结果表明:区域土壤含水量的分布符合对数正态分布规律,其变化有全局趋势,空间上存在方向性,并且有各向异性,不同深度的土壤含水量存在层与层之间的共线性。最后,在ArcGIS上采用普通克里格法生成了北京市通州区旱情形势图,为开展旱情监测、固定监测站点建设、预测预报研究以及科学指导抗旱提供依据。更多还原

【Abstract】 The regional characteristics of soil moisture in Tongzhou district of Beijing was analyzed by means of geostatistics and spatial analysis methods. The moisture distribution characteristic, spatial variation tendency as well as the spatial correlativity and homogeneity are obtained. The results show that the moisture distribution is non-homogeneous. It obeys logarithmic normal distribution law and its spatial variation exhibits a directional tendency. A soil moisture distribution map is established by using ordinary Kriging method of GIS software. It helps to monitor the development of draught and reasonably organize the distribution of monitoring station.更多还原