【摘要】 对苜蓿地进行了土壤含水率连续采集试验。通过相关性分析,发现不同深度处的土壤含水率序列具有较高的线性相关性,层间距离越近相关性越高。用R型谱系聚类法,对8个土壤深度处的土壤含水率数据进行了聚类分类,给出了具体的分类方法。通过分析发现,分为3类时,在10、20和50cm处埋设土壤水分传感器,就能较好地监测0～100cm的土壤水分状况。更多还原

【Abstract】 A continuous acquisition test for soil moisture content was carried out in a clover field.By the correlation analysis and R-cluster analysis of the soil moisture content data,it was found out that the soil moisture contents at different depths have high linear correlation and the correlation coefficient increases with the shortening of the distance between layers.The soil moisture contents at 8 different depths were sorted by R type hierarchical clustering method,subsequently.The results showed that it was reasonable that soil moisture sensors were embed into 10,20 and 50 cm for monitoring the soil moisture content of depths 0～100 cm.更多还原