整地方式对福建柏人工造林保存率及幼林生长的影响

Effects of diferent land preparation on the preserving rate and young tree growth of Fokienia hodginsii

采用造林中常用的炼山挖明穴整地和不炼山耙带挖明穴整地以及炼山挖暗穴整地3种不同整地方式营造福建柏纯林,对比分析幼林成活率、保存率和树高生长。结果表明:3种整地方式对福建柏幼林前3年的树高生长影响差异不显著,对造林成活率、保存率的影响差异也不显著。造林成本分析表明炼山挖明穴整地与不炼山耙带挖明穴整地成本基本持平,但与炼山挖暗穴整地相比,分别高出10%和7%。综合保存率、造林成本,兼顾减少新造林地水土流失等,结果认为不炼山耙带挖明穴整地是福建柏人工林适宜的整地方式。

Three different methods of land preparation were used to construct pure forests of Fokienia hodginsii,namely,bumning vegetation and digging open holes on the hills to prepare the land,no burming vegelation but digging open holes in the horizontal band of the hills to prepare the land,and burning vegetation and digging unopened holes in the hills to pre-pare the land,and their survival rate,preservation rate and tree height growth were compared and analyzed.The resuls showed that the three land preparation methods had no significant diference on the growth of tree height in the first three years of young forest of F.hdginsii,nor on the survival rate and preservation rate.The analysis of afforestation cost shows that the cost of land preparation is basically the same as that between land preparation by burning vegetation and digging open holes on the hills and no burning vegetation but digging open holes in the horizontal band of the hills,but 10%and 7%higher than that of burning vegetation and digging unopened holes in the hills to prepare the land.According to the re-sults of comprehensive preservation rate,afforestation cost,and soil and water loss reduction in newly constructed forest land,it was concluded that the best way to prepare the land is to dig open holes in the horizontal band without burning vegetation on mountain.