College of Agriculture and Bioresources
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Item 100 years of farming: long-term differences in cropping intensity and N fertilization impact soil microbial community structure(2013-03-05) Kuzmicz, S.C.; Helgason, B.L.; Germida, J.J.Item A 1000-Year Record of Temperature From Isotopic Analysis of the Deep Critical Zone in Central China(Wiley Open Access [Commercial Publisher]; American Geophysical Union [Client Organisation], 2023) Wang, Hongxiu; Li, Han; Xiang, Wei; Lu, Yanwei; Wang, Huanhuan; Hu, Wei; Si, Bing Cheng; Jasechko, Scott; Mcdonnell, JeffreyTemperature proxies for paleoclimate reconstruction have been made typically via ice cores, tree rings, stalagmites, and lake sediments. While extremely useful, these proxies can be limited spatially. Here we sampled a 98 m “soil core” from Loess Plateau of China and examined the relationship between pore water isotopic values and hydroclimate history. We extracted soil pore water for δ 18O, δ 2H, and 3H and measured chloride concentration. The 3H-peak at 6 m and chloride mass balance were used to turn depth into calendar year. A 1000 year span was revealed. δ 18O and δ 2H values between 14–50 m were anomalously low—bracketing well the Little Ice Age period from 1420 to 1870. The identification was consistent with other standard proxies in the region and showed the same temporal dynamics of temperature anomalies. Our study shows the potential of stable isotopes of soil water for paleoclimate reconstruction in deep soils.Item 1957 Tracer Fertilizer Research Report(Department of Soil Science, University of Saskatchewan, Saskatoon, SK, 5/1/1958) Rennie, D.A.; Day, T.C.Item 1958 Tracer Fertilizer Research Report(Department of Soil Science, University of Saskatchewan, Saskatoon, SK, 5/1/1959) Rennie, D.A.Item 1959 Tracer Fertilizer Research Report(Department of Soil Science, University of Saskatchewan, Saskatoon, SK, 6/1/1960) Rennie, D.A.Item 1960 Soil Plant Nutrient Research Report(Department of Soil Science, University of Saskatchewan, Saskatoon, SK, 6/1/1961) Rennie, D.A.Item 1963-1964 Soil Plant Nutrient Research Report(Department of Soil Science, University of Saskatchewan, Saskatoon, SK, 1/1/1965) Rennie, D.A.; Hutcheon, W.L.Item 1965 Soil Plant Nutrient Research Report(Department of Soil Science, University of Saskatchewan, Saskatoon, SK, 6/1/1966) Rennie, D.A.; Rice, W.A.; Henry, J.L.Item 1966 Soil Plant Nutrient Research Report(Department of Soil Science, University of Saskatchewan, Saskatoon, SK, 9/1/1967) Rennie, D.A.Item 1967 Soil Plant Nutrient Research Report(Department of Soil Science, University of Saskatchewan, Saskatoon, SK, 3/1/1968) Rennie, D.A.; Halstead, E.H.; Rice, W.A.Item 1968 Soil Plant Nutrient Research Report(Department of Soil Science, University of Saskatchewan, Saskatoon, SK, 3/1/1969) Henry, J.L.Item 1969 Soil Plant Nutrient Research Report(Department of Soil Science, University of Saskatchewan, Saskatoon, SK, 3/1/1970) Henry, J.L.; Halstead, E.H.Item 1970 Soil Plant Nutrient Research Report(Department of Soil Science, University of Saskatchewan, Saskatoon, SK, 4/1/1971) Schappert, H.J.V.Item 1971 Soil Plant Nutrient Research Report(Department of Soil Science, University of Saskatchewan, Saskatoon, SK, 5/1/1972) Henry, J.L.; Schappert, H.J.V.Item 1973 Soil Plant Nutrient Research Report(Department of Soil Science, University of Saskatchewan, Saskatoon, SK, 4/1/1975) McGill, K.S.Item 1974 Soil Plant Nutrient Research Report(Department of Soil Science, University of Saskatchewan, Saskatoon, SK, 3/1/1975) McGill, K.S.; Henry, J.L.Item 1975 Soil Plant Nutrient Research Report(Department of Soil Science, University of Saskatchewan, Saskatoon, SK, 3/1/1976) Henry, J.L.; McGill, K.S.Item 1976 Soil Plant Nutrient Research Report(Department of Soil Science, University of Saskatchewan, Saskatoon, SK, 3/1/1977) Hogg, T.J.; Henry, J.L.Item 1977 Soil Plant Nutrient Research Report(Department of Soil Science, University of Saskatchewan, Saskatoon, SK, 3/1/1978) Henry, J.L.; Hogg, T.J.Item 1978 Soil Plant Nutrient Research Report(Department of Soil Science, University of Saskatchewan, Saskatoon, SK, 3/1/1979) Henry, J.L.; Hogg, T.J.