侵蚀_沉积连续地形中土壤碳库的空间分异.pdfVIP

29 3 V ol . 29, No . 3 2009 6 Bulletin of So il and Water Co nserv atio n Jun . , 2009 刘兆云, 章明奎 , 3 10029) : , , 4 , , , : , , , : ; ; ; ; : A : 1000 2 88X 2009) 03 0061 05 : S7 14 , S 153. 6 Spatial Variation of Soil Organic Carbon Pools in Erosiondeposition Continuation Landform LIU Zhaoy un , ZH A N G M ingkui (Zhej iang Provincial Key Laboratory of Subtrop ic Soil and Plant Nutrition, and College of Natural Resources and Environ ental Sciences, Zhej iang University, H angz hou, Zhej iang 310029, China) Abstract: Soil er osion and r edepo sit io n may result in redistr ibution of soil carbon in t errest rial syst em s. H ow ev er, lim it ed inf orm at ion is available about t ransfer and redist ribut ion char act eristics of v ar io us soil or g anic C in t he pro cesses of t he ero sion and redepositio n. A repr esent ative erosiondeposit ion landfo rm, con sist ing o f st rongly eroded zone, slight ly eroded z one, slope deposit ional zone, and bot t om depositional zo ne, w as selected t o sample fo ur so il prof iles for st udying the spat ial variat ion of variou s o rganic carbon pools in dif ferent landf orm posit ions and ex plor ing fat e of variou s or ganic C in the pr ocesses o f soil erosiondeposi t ion . Result s show ed that intrinsic charact erist ics of variou s o rganic C g reat ly af fected their t ransfer and dis t ribution behavio rs. Contents o f to t al soil org anic C and it s com po