The growth and economic benefits of the Eucalyptus urophylla×E.grandis DH32-13 clonal forest at different slope positions and initial planting densities were investigated and analyzed,and the results showed that both slope position and density significantly or ex-tremely significantly impact the growth and economic benefits of 8-year-old DH32-13 stands.The maximum growth and economic benefit are observed on downhill slopes,with the optimal initial planting density being 1650 trees·hm-2.The average survival rate of plantations at the optimal slope and initial density was 95.9％and 95.7％,respectively.The 8-year-old stand's preservation rate,diameter at breast height,tree height,individual wood volume,and timber volume reached 80.0％～83.3％,16.2～16.8 cm,21.7～24.4 m,0.2070～0.2519 m3,and 285.6～332.5 m3·hm-2,respectively.The net profit ranges from 111,500 to 144,000 yuan·hm-2.Suitable planting slope position and initial density can enhance the productivity and economic benefits of the DH32-13 clonal stands.
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万方数据