摘要
通过对大青山人工生态林林分生长状况的调查分析 ,得出大青山人工生态林的建立是以海拔高度为主要因子划分造林地立地条件类型 ,树种选择在海拔 1 60 0m以上以华北落叶松 ,1 60 0m以下以油松为主要造林树种 ,是符合该地区生态气候条件的。使造林 1 5年～2 1年的林分保存率达到了 83.6～ 92 .0 % ,郁闭度为 0 .6～ 0 .8,并经测定表明 :该人工生态林林分已形成了很好的枯枝落叶层 ,林地土壤有机质含量丰富 ,土壤容重小 ,减少地表径流 ,土壤蓄水能力得到提高 ,增加了地下渗透的涵养水源作用 ,对区域环境已发挥了显著的生态效益。
Based on investigating and analyzing the growth status of artificial plantation, the results showed that artificial forest types are mainly related to elevation. Larix principis-rupprechtii is planted over 1600m, Pinus tabulaeformis under 1600m which elevation have suitable ecological climate condition in Daqing Mt. So the Forest survival rate from 15 to 21 years old is 83.6～92.0%, canopy density is 0.6～0.8. The investigation showed that the stand have formed good ground litter; the content of organic matter in forest land is abundant; soil unit weight is lightening and surface runoff reduced, capacity of storing water of soil raised.
出处
《干旱区资源与环境》
CSSCI
CSCD
2004年第1期154-159,共6页
Journal of Arid Land Resources and Environment
