基于物元模型的区域土壤养分评价-水土保持通报.PDFVIP

2 8 3 V ol . 2 8, No . 3 2008 6 Bulletin of So il and Water Co nserv atio n Jun . , 2008 1 1 1 2 1 汤洁 , 王晨野, 李昭阳, 赵凤琴 , 吕川 1. , 130026; 2 . , 116029) : , , 7 , , , , : ; ; ; : A : 1000 2 88X 200 8) 03 0101 06 : S 15 8 Evaluation of Regional Soil Nutrients Basedon MatterElement Model 1 1 1 2 1 T A N G Jie , WA N G Cheny e , L I Zhaoyang , ZH A O F engqin , L Chuan ( 1. College of E nv ironment and Resour ces , J ilin Univers ity , Changchun, J ilin 130026, China; 2. College of L if e S ciences , L iaoning N o rmal University , D alian, L iaoning 116029, China Abstract: Based on t he invest igat ion of ecolo gical environment in Da an Cit y, Jilin Prov ince, physical and chemical charact erist ics and nutr ient component s of t he so ils in t he w est ern part of t he reg ion w ere syst em at i cally tested and t he r eg io nal soil qual it y w as com prehensively evaluated. Organic mat t er, t ot al N , t ot al P, to tal K , av ailable N , available P and available K w ere chosen as t he ev aluat io n indexes . A n ev al uat io n m odel of reg ional soil nut rient s w as const ruct ed w ith t he suppo rt o f mat t erelement model and ex tension engineering theory . Overall evaluat io n result o bt ained by the m odel is basically co nsist ent w it h lo cal condit ions. T he mat terelement m odel can eliminat e