Influence of topography and land management on soil nutrients variability in Northeast China

It is well recognized that soil nutrient content varies across the landscape, but the nature and degree of that variability with respect to landscape position is still poorly understood and documented. Slope steepness and aspect, climate and land management are known to affect soil nutrient distribution in a field, but the relative and cumulative strengths of these effects are less well investigated. Four hundred and thirty-five topsoil samples collected from a typical Mollisol under intensive crop management in Northeast China were used to analyze the influence of landscape position, climate and land management on the spatial variability of soil organic matter (SOM), total nitrogen (TN) and total phosphorus (TP). Both geo-statistics and traditional statistics were used to analyze the data, and significant spatial variability was found for SOM (22.5–86.6 g kg−1), TN (0.98–4.26 g kg−1) and TP (0.26–1.80 g kg−1). The distribution of all 3 nutrients was found to be influenced by human activity and by landscape. When both slope degree and slope aspect were considered, the results differed from when only aspect or steepness was considered independently. In a northern aspect, SOM and TN were significantly higher on slopes of 0–2% than on steeper slopes, in a south-eastern aspect they were significantly higher on slopes of 0–2, 2–3 and 3–4% than on slopes >4% and in a south-western aspect those nutrients on slopes of 2–4% were significantly higher than on slopes of >5%. Cross-slope tillage effectively increased SOM, TN and TP by 33.8, 23.3 and 22.4%, respectively compared to down-slope tillage, indicating the potential for adoption of a nutrient-retaining management practice in the Mollisol region of northeast China.

[1]  Paul E. Gessler,et al.  Soil-Landscape Modelling and Spatial Prediction of Soil Attributes , 1995, Int. J. Geogr. Inf. Sci..

[2]  R. Weil,et al.  The nature and properties of soils. 11th ed. , 1996 .

[3]  E. Michael,et al.  A geostatistical analysis of the geographic distribution of lymphatic filariasis prevalence in southern India. , 2002, The American journal of tropical medicine and hygiene.

[4]  A. J. Gerrard,et al.  Runoff and soil erosion on cultivated rainfed terraces in the Middle Hills of Nepal , 2003 .

[5]  Xingyi Zhang,et al.  Spatial Variability of Nutrient Properties in Black Soil of Northeast China , 2007 .

[6]  M. J. Vepraskas,et al.  Nature and properties of soils: 9th Edition. By Nyle C. Brady. Collier Macmillan, Stockley Close, West Drayton, London UB7 9BE, 1984, 750 pp. $31.00 (hardback), $18.50 (paperback), £14.95, ISBN 02-946030-1 , 1986 .

[7]  D. Mulla,et al.  Relationship between Oil Palm Yield and Soil Fertility as Affected by Topography in an Indonesian Plantation , 2006 .

[8]  Michael A. Fullen,et al.  Effects of soil conservation measures on erosion rates and crop productivity on subtropical Ultisols in Yunnan Province, China , 2004 .

[9]  A. Konopka,et al.  FIELD-SCALE VARIABILITY OF SOIL PROPERTIES IN CENTRAL IOWA SOILS , 1994 .

[10]  W. Post,et al.  Soil organic carbon sequestration rates by tillage and crop rotation : A global data analysis , 2002 .

[11]  Paul L. G. Vlek,et al.  Environmental correlation of three-dimensional soil spatial variability: a comparison of three adaptive techniques , 2002 .

[12]  J. M. Laflen,et al.  Soil Strength, Slope, and Rainfall Intensity Effects on Interrill Erosion , 1986 .

[13]  J. D. Gaynor,et al.  Effect of controlled drainage and tillage on soil structure and tile drainage nitrate loss at the field scale , 1998 .

[14]  R. Webster,et al.  Filtering SPOT imagery by kriging analysis , 2000 .

[15]  D. Xiao,et al.  Spatial Variability of Soil Organic Carbon in Relation to Environmental Factors of a Typical Small Watershed in the Black Soil Region, Northeast China , 2006, Environmental monitoring and assessment.

[16]  D. Wyse,et al.  Atrazine and alachlor losses from subsurface tile drainage of a clay loam soil , 1993 .

[17]  D. Anderson,et al.  SOIL EROSION EFFECTS ON SOIL QUALITY AND YIELD , 1990 .

[18]  A. B. Bottcher,et al.  Nutrient and Sediment Loadings from a Subsurface Drainage System , 1981 .

[19]  Rainer Horn,et al.  Soil compaction processes and their effects on the structure of arable soils and the environment , 1995 .

[20]  R. Lal,et al.  Soil Carbon Sequestration Impacts on Global Climate Change and Food Security , 2004, Science.

[21]  J. Schoenau,et al.  Soil Properties, Yield, and Landscape Relationships in South-Central Saskatchewan Canada , 2008 .

[22]  J. Morin,et al.  Slope, aspect, and phosphogypsum effects on runoff and erosion. , 1990 .

[23]  Shan Lin,et al.  Slope aspect has effects on productivity and species composition of hilly grassland in the Xilin River Basin, Inner Mongolia, China , 2008 .

[24]  J. Schoenau,et al.  Impact of tillage and landscape position on nitrogen availability and yield of spring wheat in the Brown soil zone in southwestern Saskatchewan , 1998 .

[25]  Rattan Lal,et al.  Soil Erosion Impact on Agronomic Productivity and Environment Quality , 1998 .

[26]  E. H. Kidder,et al.  Effect of Contour Farming on Soil Loss and Runoff1 , 1951 .

[27]  A. Gallardo.  Spatial Variability of Soil Properties in a Floodplain Forest in Northwest Spain , 2003, Ecosystems.

[28]  A. Moulin,et al.  Spatial variability of wheat yield, soil properties and erosion in hummocky terrain , 1994 .

[29]  P. A. Burrough,et al.  Environmental Soil–Landscape Modeling. Geographic Information Technologies and Pedometrics - Edited by S. Grunwald , 2006 .

[30]  Timothy C. Coburn,et al.  Environmental Soil-Landscape Modeling: Geographic Information Technologies and Pedometrics , 2007 .

[31]  Kaishan Song,et al.  Spatial distribution of soil organic carbon and analysis of related factors in croplands of the black soil region, Northeast China , 2006 .

[32]  Krishna R. Reddy,et al.  Spatial distribution of soil nutrients in a northern Everglades marsh: water conservation area 1 , 1994 .

[33]  D. Malo,et al.  Soil Fertility and Crop Responses at Selected Landscape Positions1 , 1975 .

[34]  M. B. David,et al.  Nitrogen cycling and tile drainage nitrate loss in a corn/soybean watershed , 1998 .

[35]  G. Uehara,et al.  Geostatistical Analysis of Soil Chemical Properties of Large Land Areas. II. Kriging1 , 1982 .

[36]  S. Malhi,et al.  Soil nitrogen dynamics as affected by landscape position and nitrogen fertilizer , 2005 .

[37]  E. Paul,et al.  ORGANIC C DYNAMICS IN GRASSLAND SOILS. 2. MODEL VALIDATION AND SIMULATION OF THE LONG-TERM EFFECTS OF CULTIVATION AND RAINFALL EROSION , 1981 .

[38]  Budiman Minasny,et al.  On digital soil mapping , 2003 .

[39]  R. Morgan.  Soil Erosion and Conservation , 1988 .

[40]  K. Reddy,et al.  Soil properties as indicators of disturbance in forest ecosystems of Georgia, USA , 2009 .

[41]  M. A. Oliver,et al.  Geostatistics and its application to soil science , 1987 .

[42]  Subodh Sharma,et al.  Developing a sustainable agro-system for central Nepal using reduced tillage and straw mulching. , 2008, Journal of environmental management.

[43]  D. Anderson.  Pedogenesis in the Grassland and Adjacent Forests of the Great Plains , 1987 .