摘要
分析了田间同深度土壤含水量的半方差和不同深度土壤含水量的交互半方差特征 ,探讨了土壤含水量的Kriging和Cokriging估值方法。研究表明 ,同深度土壤含水量与不同深度的土壤含水量之间均具有显著的空间相关性 ,用Kriging方法进行土壤含水量的估值精度较传统方法高。加入浅层土壤含水量用Cokriging方法来估测深层土壤含水量 。
The semivariogram and cross semivariogram of soil water content of 20 cm and 55 cm were analysed. The optimal interpolation of soil water content by Kriging and Cokriging was calculated. It is shown that the interpolation precision of Kriging method is higher than that of Jackkniffing and linear methods, the precision of Cokriging method is higher than that of above methods. The upper layer soil water content value can be used to improve the interpolation precision of deeper layer soil water content.
出处
《水土保持通报》
CSCD
北大核心
2001年第3期59-62,共4页
Bulletin of Soil and Water Conservation
基金
国家自然科学基金项目 (49871 0 4 0 )
国家重大科技产业示范工程项目 (99- 0 2 1 - 0 1 - 0 2 )
