寒冷地区抚育间伐对林分土壤肥力的影响

Effects of soil fertility on Tending Thinning onthe forest in cold area

对不同间伐强度林分的有效氮含量及微生物活性进行调查分析,结果表明,在寒冷气候条件下,抚育间伐可以提高林分光照强度及林内温度,促进土壤微生物活性,加快凋落物的分解,从而提高土壤肥力;同时,随着土层深度的加大,有效氮含量及微生物活性有下降的趋势。研究结论可以为本地区人工林间伐调控理论提供参考。

In this paper,the effective nitrogen content and microbial activity of different thinningintensity was analyzed. The results show thatthinning can improve the light intensity and the temperature,promote soil microbial activity,accelerate the decomposition of litter,thereby improving soil fertility,under cold weather conditions. At the same time,with the in-crease of soil depth,the effective nitrogen content and microbial activity decreased. The conclusion of the study can provide a reference for the artificial forest region of control theory.