【摘要】 用GIS和地统计学方法相结合,对川中丘陵区乡村农户P素的空间分布特征进行了研究。结果表明:从土壤P素的描述性统计上看,R08_C06养分含量较高,其他4个区基本一致;全磷的变异系数明显高于其他4区,有效磷的变异系数也处在较高的位置。5个样区的有效磷变异系数都高于同区的全磷的变异系数。从地统计学统计结果表明:R08_C06、R08_C15、R13_C14中的全磷为强烈的空间自相关性;R13_C14中的有效磷为中等空间自相关,其他4区为弱自相关性。从变程上看,R08_C15、R13_C14中土壤磷素的变程均较小。从5个区的土壤磷素分布模型可以看,同一样区养分分布具有相似趋势,不同样区养分分布差异较大。更多还原

【Abstract】 By combining GIS with geostatistics,Sichuan hills area village landscape phosphorous spatial pattening characters are studied.The result shows: seen from soil phosphorous description statistics,the content of R08_C06 nutrient is relatively high,unanimous basically in other four districts;The coefficient of variation of the total phosphorus is obviously higher than other four districts,the coefficient of variation of the effective phosphorus is in the higher position too.Five pieces of coefficient of variation of effective phosphorus of district are higher than the coefficient of variation of the total phosphorus of the same district.The geostatistics statistic results indicate: The total phosphorus in R08_C06,R08_C15,R13_C14 is the strong space dependence;The effective phosphorus in R13_C14 is the medium-sized space dependence,other four district are weak dependence.The major range of soil phosphorus in R08_C15,R13_C14 is relatively little.It is obtained from the modeling analysis of phosphorus spatial distribution of five sample cells that nutrient distribution trends are similar in the same district while various greatly in different districts.更多还原