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YANG Xiu-Yun, GUO Ping-Yi, HAN You-Zhi, NING Peng, WU Xiao-Gang. Effects of Cutting Disturbance on Spatial Heterogeneity between Root Biomass of the Herb and Soil Environment in Larix principis-rupprechtii Forests in Guandi Mountain[J]. Plant Science Journal, 2012, 30(6): 545-551. DOI: 10.3724/SP.J.1142.2012.60545
Citation: YANG Xiu-Yun, GUO Ping-Yi, HAN You-Zhi, NING Peng, WU Xiao-Gang. Effects of Cutting Disturbance on Spatial Heterogeneity between Root Biomass of the Herb and Soil Environment in Larix principis-rupprechtii Forests in Guandi Mountain[J]. Plant Science Journal, 2012, 30(6): 545-551. DOI: 10.3724/SP.J.1142.2012.60545
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Effects of Cutting Disturbance on Spatial Heterogeneity between Root Biomass of the Herb and Soil Environment in Larix principis-rupprechtii Forests in Guandi Mountain

  • 1.

    Forestry College of Shanxi Agriculture University, Taigu, Shanxi 030801, China

  • 2. Agriculture College of Shanxi Agriculture University, Taigu, Shanxi 030801, China

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  • Received Date: May 10, 2012
  • Revised Date: August 20, 2012
  • Published Date: December 29, 2012
    Graphical Abstract
    • Abstract
  • Based on theory and methodology of spatial pattern analysis in geostatistics, samples were taken at three soil depths (0-10 cm, 10-20 cm, and 20-30 cm) using soil core (7.0 cm in diameter). Effects of spatial heterogeneity between the herb fine root (≤2 mm)biomass of Larix principis-rupprechtii and soil characteristics (soil moisture, pH, total N, NO3--N, NH4+-N) were analyzed. The results showed that herb root biomass was 31.17 g/m2 in the disturbed stand (plot A), which was significantly less than that of the undisturbed plot (72.01 g/m2), and root accumulated in the upper soil layer. At the 0-10 cm soil layer, spatial heterogeneity (C0+C=31330.0) and spatial autocorrelation (C/C0+C=92.5%) enhanced obviously and exhibited a distinct spatial dependence in the disturbed stand.After cutting disturbance, the correlation between root biomass of herb and soil moisture, pH, total N, NO3--N, NH4+-N increased. However, the correlation between herb root biomass and fine root biomass of Larix principis-rupprechtii was stronger in the undisturbed plot.
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    • References (15)
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