不同采伐强度对闽南山地马尾松林下植被和土壤肥力的影响试验

Experiment about Impact of Different Cutting Intensities of Pinus massoniana on Both Vegetation under Forest and Soil Fertility

在闽南山地对32a生马尾松成熟林开展不同采伐强度试验，分析不同采伐强度对植被和土壤肥力的影响程度，结果表明：在采伐强度30％～70％范围内，随采伐强度的加大，林地植被得到一定程度的恢复和发展，土壤养分下降幅度较小，但不论是何种采伐强度，对土壤物理性状均会造成不利影响．皆伐作业由于人为严重干扰，林地植被受到极大破坏，植被多样性明显降低，林地长时间暴露所引起的水土流失，导致土壤肥力趋于恶化．

The experiment about different cutting intensities of 32 a Pinus massoniana mature forest was to analyze the impact on the vegetation and fertility. The result showed that the forestland vegetation could be regenerated and developed to some extent with increasing intensity within 30% -70%. No matter what intensity would result in adverse impact on physical shape and properties of the soil. Owing to severe interference, all cutting had great deterioration on the vegetation including apparently low diversity. Fertility tended to be worse because of soil erosion due to long exposure of the forestland.