黄河故道刺槐与杨树混交林土壤特性的调查分析

Study on Soil Characteristics of Mixed Forest of Robinia pseudoacacia L and Populus spp in An cient Riverbed of the Yellow River

调查测定了河南民权黄河故道刺槐(Robinia pseudoacacia L)与杨树(Populus spp)混交林与刺槐纯林的生长情况及土壤化学性质,通过SAS软件,用方差分析和多重比较的方法以对比分析刺槐与杨树混交对林木生长和土壤化学性质的影响。研究表明:杨树与刺槐混交林明显促进刺槐的生长,提高林分的生产力;混交林中刺槐的平均树高与胸径要高于刺槐纯林;刺槐、杨树混交林林地土壤的理化性质得到明显改善,混交林地土壤养分、土壤微生物含量以及土壤酶活性较刺槐纯林都有显著提高。

This article surveys the growth and soil chemical property of the mixed forest of Robinia pseudoacacia L,populus spp and pure forest of Robinia pseudoacacia L in ancient riverbed of the Yellow River.Use the SAS,through analysis of variance and multiple comparison,Relative analysis the mixed forest of Robinia pseudoacacia L and populus spp is influence for the growth and soil chemical property.Study have shown：the mixed forest of Robinia.pseudoacacia L and populus spp can promote the growth of the Robinia pseudoacacia L,improve the productivity of the stand.The average of the tree height and the diameter of the tree in mixed forest;The Physi cal and chemical properties of the soil is improve in mixed forest of Robinia pseudoacacia L and populus spp,the soil nutrients,the content of the edaphon and the activities of the soil enzyme is higher than the pure for est of Robinia pseudoacacia L.