[1]LU Shao-wei,LIU Feng-qin,YU Xin-xiao,et al.Studies on the Configuration and Function of Different Density Pine in Rocky Mountain Area of Beijing[J].Research of Soil and Water Conservation,2008,15(01):117-121.
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Studies on the Configuration and Function of Different Density Pine in Rocky Mountain Area of Beijing
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
15
Number of periods:
2008 01
Page number:
117-121
Column:
Public date:
2008-02-20
- Title:
- Studies on the Configuration and Function of Different Density Pine in Rocky Mountain Area of Beijing
- CLC:
- S791.254;S718.45
- DOI:
- -
- Abstract:
- The species diversity, carbon densities, water conservation and so on of thirty-two old pine of the south slope’s five planting density were observed and determined at Badaling in Beijing.Studies were conducted on the different density, with smaller density of forests, the growth of pine have been becoming better and better, which the species diversity of vegetation under forests was higher than that of other forests and had Quercus liaotungensis and others trees; The biggest cumulation is 95.53 m3/hm2 of 1200 trees/hm2 pine forest, but individual cumulation of 800 trees/hm2 is 0.1017 m3/hm2, and is 3.17 times of cumulation of 2000 trees/hm2, which individual cumulation increases with the lessen of pine density.The range of carbon densities of different pine was 78.87～142.13 t/hm2 and the average carbon density was 119.14 t/hm2, which reduced with the augmentation of density.The carbon densities of pine were made of vegetation, litter and soil layer, the spatial distribution sequence of carbon storage ranked as soil layer>vegetation layer>litter layer, and the carbon density of soil was magnitude, which the carbon density was above of 90.34 t/hm2.The ratio of carbon density of above ground and under ground (soil, root and litter) was average 1/3.30; The permeating rate and runoff reduced with increasing densities, which is magnitude signification of adding runoff and water conservation.The stands reduced with increasing densities, which is disadvantage factor for choosing the furthest density of 800 trees/hm2, but its effect is small for rainfall of many year in Beijing.
- References:
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Last Update:
1900-01-01