农田黑土有机质和速效氮磷不同尺度空间异质性分析.pdfVIP

20 1 V o l. 20 No . 1 2006 2 J o ur nal o f Soil and Wat er Con serv ation Feb . , 200 6 赵　军, 刘焕军, 隋跃宇, 张兴义, 孟　凯 ( , 15004 0) G IS , , , , , 2 , , ; ; ; ; G IS S 158 . 3 A 1009 -2242 ( 200 6) 01-0041-04 Analysis for Spatial Heterogeneity of Organic Matter Content and Available Nutrients in Blacksoil Crop Area with Dif f erent Scales ZHA O Jun , L IU Huan -jun , SU I Y u e-y u, ZHA N G X ing -yi, MEN G K ai ( 1. N or theast I nst it ute of Geog rap hy and A g r icult ur al E cology , Ch inese A cademy of Sc iences, H ar bin 150040) Abstract G eost atistics combined w it h G IS w as applied t o t reat ment and analyze t he sp at ial variabilit y of so il nut rient s in to psoil ( 020 cm ) in bl ack soil crop area w it h diff erent scales. T he r esult s indicat ed t hat t he semivario gram of org anic mat t er cont ent and availabl e nit rog en w ere best descr ibed by G au s sian model in ; ; large scale T he semivariog ram of O M C w as fit ed by sphericit y m odel t he A N w as best fit t ed by exponent ial model in small scale; and avail able phosphor us w as best f it t ed by l inear model in bot h scales. CV of A P w as ch anged big est o f all nutr ent s. T he analysis also show ed t hat t he spat ial aut o-correlat io ns of soil nut rients are very dif ferent in diff erent scales , w hich indicat ed the change w as imp act ed by dif ferent ecolo gical pro cess . Key words black so il ; soil available nut rient s ; spat ial het erog eneity ; g eo st at ist ics ; G IS , 20