【摘要】 为探究刺槐混交种植对林下植被生物量及土壤养分的影响，在山东省蒙阴县某林场建立试验林，分别考察了不同刺槐纯林、杨树-刺槐混交林模式林下植被生物量、林分生长情况、土壤养分、土壤微生物以及土壤酶活性状况。结果表明：混交林林下生物量要高于刺槐纯林，树高、胸径的生长情况均优于刺槐纯林，对土壤养分的改善作用显著强于刺槐纯林，混交林更有利于土壤有机质含量和有益微生物群落增加，土壤酶活性要高于刺槐纯林。更多还原

【Abstract】 In order to explore the impact of mixed planting of Robinia pseudoacacia L.on the biomass of undergrowth vegetation and soil nutrients, a trial forest was established in a forest farm in Mengyin County, Shandong Province, and the biomass of undergrowth vegetation, growth of stand, soil nutrients, soil microorganisms and soil enzyme activities of different pure Robinia pseudoacacia L. forest and PopulusL-Robinia pseudoacacia L. mixed forest models were investigated respectively. The results showed that the biomass under the mixed forest was higher than that of the pure Robinia pseudoacacia L. forest; the growth of tree height and DBH were better than that of the pure Robinia pseudoacacia L. forest; the improvement of soil nutrients was significantly stronger than that of the pure Robinia pseudoacacia L. forest; the mixed forest was more conducive to the increase of soil organic matter content and beneficial microbial community, and the soil enzyme activity was higher than that of the pure Robinia pseudoacacia L. forest.更多还原