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[1]CHENG Yi,AN Shao-shan,MA Yun-fei.Soil Microbial Biomass and Enzymatic Activities in the Loess Hilly Area of Ningxia under Different Slope Positions[J].Research of Soil and Water Conservation,2010,17(05):148-153.

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Soil Microbial Biomass and Enzymatic Activities in the Loess Hilly Area of Ningxia under Different Slope Positions

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 17 Number of periods: 2010 05 Page number: 148-153 Column: Public date: 2010-10-20

Title:: Soil Microbial Biomass and Enzymatic Activities in the Loess Hilly Area of Ningxia under Different Slope Positions

Author(s):: CHENG Yi¹, AN Shao-shan^1,2,3, MA Yun-fei¹; 1. College of Resources and Environmental Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A & F University, Yangling, Shaanxi 712100, China;
3. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China

Keywords:: slope position; soil nutrient; soil microbial biomass; soil enzymatic activities

CLC:: S151.9

DOI:: -

Abstract:: Soil microbial biomass and enzymatic activities were studied in soils of Guyuan Loess hills of Ningxia Province under natural grassland to understand the slope position by analyzing the soil microbial biomass and enzymatic activities between relationship, further understands its inner link. The results indicated that in the three positions of the topography (up slope position, the middle slope position and down slope position), soil microbial biomass carbon (C_mic) reduced with the slope position down; soil microbial nitrogen (N_mic) were higher in the up slope position and down slope position and lower in the middle slope position; soil microbial phosphorus (P_mic) were higher in the middle slope position and down slope position and lower in the up slope position. Soil enzymatic activities do not change with the position. Significant analysis shows that C_mic and enzymatic activities was not significantly different, N_mic is significantly different under the up slope position and down slope position (P<0.05,n=3), and P_mic is significantly different under the middle slope position and down slope position(P<0.05,n=3).

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