摘要
采用对比实验的方法，对小兴安岭林区森林采伐与造林后土壤化学性质的变化进行了调查与测定。结果表明：森林采伐后，土壤ｐＨ值增加，土壤有机质和土壤养分（Ｎ、Ｐ、Ｋ）初期表现为明显增加，随后又迅速减少，以至低于采伐前水平。择伐对土壤影响不明显，而皆伐使土壤养分流失较多。采伐后及时营造速生树种既可有效地利用采伐初期大量的养分，又可减少和防止土壤养分的流失。
The chemical property of soil was studied by comparative experimental method after forest harvesting in Xiaoxing'an Mountains forest region. The results show that after harvesting, the pH value of soil increases, the organic matter of soil and soil nutrient(N、P、K) obviously increases in the early days and soon afterwards fast decreases to the level which is lower than that before harvesting.Selective cutting do not affect clearly on soil, and clear-cutting make soil nutrient lose much more.After harvesting, planting fast-growing trees can effectively make use of a great deal of nutrient and reduce the loss of soil nutrient.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1998年第4期14-16,共3页
Journal of Northeast Forestry University
关键词
森林采伐
造林
土壤
化学性质
Forest harvesting
Afforestation
Soil
Chemical property
