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[1]SUN Fei-da,LONG Rui-jun,LU Cheng-xiang.Effects of Rodents Activities on Primary Productivity and Soil Physical Characteristics in Alpine Meadow[J].Research of Soil and Water Conservation,2009,16(03):225-229.

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Effects of Rodents Activities on Primary Productivity and Soil Physical Characteristics in Alpine Meadow

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 16 Number of periods: 2009 03 Page number: 225-229 Column: Public date: 2009-06-20

Title:: Effects of Rodents Activities on Primary Productivity and Soil Physical Characteristics in Alpine Meadow

Author(s):: SUN Fei-da^1,2, LONG Rui-jun², LU Cheng-xiang¹; 1. Department of Grassland Science, Sichuan Agricultural University, Ya’an, Sichuan 625014, China;
2. International Centre for Tibetan Plateau Ecosystem Management, Lanzhou University, Lanzhou 730020, China

Keywords:: plateau pika(Ochotona curzoniae); burrowing rodents density; alpine meadow; primary productivity; soil physical characteristics

CLC:: S812;Q958.113

DOI:: -

Abstract:: This paper mainly focused on the biomass distribution and soil physical characteristics of burrowing plateau pikas(Ochotona curzoniae)densities plots in June and August, which were forage grass initial and bloom period in growing season respectively, in order to discover the effects of plateau pikas activities to plant community biomass and soil environment. The experimental results showed that with the burrows in use increasing, the aboveground, underground and total biomass were described with "V" model, firstly declined sharply and then rose slowly, whcih was described with quadratic function, and the biomass of the first plotⅠ(Approximate Zero Plot, AZP)was the most.The underground biomass distributed at a scale of 0-10 cm, and plant roots were trended together in soil surface layer, especially in August. In August, the aboveground, underground and total biomass were significantly more than in June, and the underground biomass was greater than aboveground at every plots and different periods in growing season. The relationship of underground and aboveground biomass was described with quadratic function.The soil water percentage, soil bulk density and pH had no directly relationship with the increasing burrowing rodents densities,but had the linear relationship with different layers.

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