关键词: 川中丘区, 空间分布, 地统计学, 磷素

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.

Key words: the hilly area of the middle Sichuan basin, spacial pattening, geostatistics, phosphorous