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Frontiers of Forestry in China

ISSN 1673-3517

ISSN 1673-3630(Online)

CN 11-5728/S

Front Fore Chin    2009, Vol. 4 Issue (2) : 185-190    https://doi.org/10.1007/s11461-009-0024-4
RESEARCH ARTICLE
Effects of site conditions and methods of cultivation on growth of sawtooth oak plantations
Luozhong TANG1(), Dan ZHAO1, Chunfeng YAN1, Zhilong LIU1, Shengzuo FANG1, Mukui YU2
1. College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China; 2. Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang 311400, China
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Abstract

The effects of site conditions and cultivation on the growth of sawtooth oak (Quercus acutissima Carr.) plantations were evaluated at the Hongyashan forest farm, in Chuzhou City, Anhui Province, China. The results indicate that the position on the slope, the amount of gravel and the thickness of the soil were important factors in the growth of the sawtooth oak. Lower slope positions with small amounts of gravel and a thick soil were better for the growth of this species than middle slope positions with more gravel and a thin soil. Given the site conditions of the hilly and mountainous areas in Chuzhou City, the mixed Chinese fir (Cunninghamia lanceolata Hook.) and sawtooth oak forests did not improve forest productivity compared with pure sawtooth oak forests. Both urea and compound fertilizers promoted the growth of sawtooth oak, as did site preparation and intercropping. Two years after planting, the height growth of ordinary seedlings with a starting height of 0.6 m was higher than that of supper seedlings with a starting height of 1.0 m. Compared with planting, the early growth of the coppices was faster, but the later growth of the coppices was slower.

Keywords site condition      cultivation      sawtooth oak      growth     
Corresponding Author(s): TANG Luozhong,Email:tangluozhong@yahoo.com.cn   
Issue Date: 05 June 2009
 Cite this article:   
Luozhong TANG,Dan ZHAO,Chunfeng YAN, et al. Effects of site conditions and methods of cultivation on growth of sawtooth oak plantations[J]. Front Fore Chin, 2009, 4(2): 185-190.
 URL:  
https://academic.hep.com.cn/ffc/EN/10.1007/s11461-009-0024-4
https://academic.hep.com.cn/ffc/EN/Y2009/V4/I2/185
sitesite conditionstand density/(stems·hm-2)DBH/cmheight/mstem biomass/(t·hm-2)branch biomass/(t·hm-2)leaf biomass/(t·hm-2)above ground biomass/(t·hm-2)leaf area index
A1middle slope, soil depth<20 cm, gravel content>30%5875±240a4.1±0.2a5.8±0.2a21.4±1.2a5.6±0.3a3.7±0.2a30.7±1.6a4.3±0.2a
A2lower slope, soil depth>30 cm, gravel content<30%6067±309a4.7±0.2b6.7±0.3b28.1±1.5b7.4±0.4b4.8±0.3b40.3±1.9b5.6±0.3b
Tab.1  Biomass of 10-year-old sawtooth oak plantations under different site conditions
siteforest compositionstand density/(stems·hm-2)DBH/cmheight/mstem biomass/(t·hm-2)branch biomass/(t·hm-2)leaf biomass/(t·hm-2)above ground biomass/(t·hm-2)
B1sawtooth oak3867±3456.0±0.36.7±0.229.6±1.38.3±0.34.90±0.2042.8±1.5
Chinese fir966±1286.4±0.24.6±0.22.4±0.30.23±0.030.24±0.04.2.9±0.3
total4833±436a6.1±0.4a6.3±0.3a32.0±1.5a8.5±0.4a5.1±03a45.7±2.3a
B2sawtooth oak4666±323a5.6±0.2a6.7±0.2a31.5±1.8a8.7±0.7a5.2±0.3a45.4±2.4a
Tab.2  Biomass of 11-year-old mixed Chinese fir and sawtooth oak forests and pure forests of sawtooth oak
sitefertilizer typestand density/(stems·hm-2)DBH/cmheight/mstem biomass/(t·hm-2)branch biomass/(t·hm-2)leaf biomass/(t·hm-2)above ground biomass/(t·hm-2)leaf area index
C1compound fertilizer4799±232a5.5±0.2a6.6±0.3a30.4±0.8a8.6±0.5a5.1±0.3a44.1±1.9a6.1±0.3a
C2urea4572±394a5.7±0.3a6.9±0.4a32.8±2.7a9.0±0.4a5.5±0.4a47.3±3.2a6.4±0.4a
Tab.3  Effects of compound fertilizer and urea on the biomass of sawtooth oak plantations
siteseedling height/mstand density/(stems·hm-2)survive rate/%basal diameter/cmheight/mincrement of height/mgrowing rate of height/%
D11.06264±306a94.0±3.3a2.12±0.02a1.50±0.04a0.50±0.04a50.0±3.5a
D20.66290±230a94.3±2.5a1.69±0.04b1.21±0.07b0.61±0.07a101.7±11.8b
Tab.4  Height growth of sawtooth oak plantations in different size of seedlings
sitemanagement methodstand density/(stems·hm-2)height/m
E1overall soil preparation, and intercropping with peanuts for two seasons6040±352a3.97±0.35a
E2partial soil preparation, non intercropping4532±377b0.76±0.18b
Tab.5  Effects of site preparation and intercropping on the height growth of sawtooth oak plantations
sitestand age and regeneration typebiomasscompositionstand density/(stems·hm-2)DBH/cmheight/mstem biomass/(t·hm-2)branch biomass/(t·hm-2)leaf biomass/(t·hm-2)above ground biomass/(t·hm-2)
F112-year-old, planting in 1996standing tree2567±231a9.1±0.5a10.3±0.4a61.6±3.5a19.9±1.4a9.3±0.5a90.8±5.3a
F26-year-old, coppice in 2001standing tree4550±390b5.6±0.3b7.0±0.3b35.2±2.610.2±0.85.7±0.351.1±2.9
6-year-old, planting in 1996cutting tree22.05.63.9(1)31.5
total57.2±2.6a15.8±0.8b9.6±0.3a82.6±2.9a
Tab.6  Biomass of sawtooth oak plantations in different regeneration types
Fig.1  Dynamics of stem diameter at 20 cm height of sawtooth oak for two different types of regeneration
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