滨海盐碱地刺槐白蜡混交林土壤酶与养分相关性研究  

Studies on Soil Enzyme Activity and Soil Nutrient Content of Mixed Stands with Robinia pseudoacacia and Fraxinus velutina in Coastal Saline Soil

作　　者：曹帮华[1] 吴丽云[1] 

机构地区：[1]山东农业大学林学院,泰安271018

出　　处：《水土保持学报》2008年第1期128-133,共6页Journal of Soil and Water Conservation

基　　金：科技部项目(02EFN216700794);山东省"十一五"攻关项目(2006GG2206001)

摘　　要：研究了刺槐、绒毛白蜡纯林及其混交林中不同土层在不同季节的土壤养分含量、土壤酶活性的变化。结果表明:各林分间的土壤养分含量和土壤酶活性在各个季节和土层均表现出差异。经统计分析,土壤酶活性和土壤养分含量在不同季节呈显著相关关系。土壤酶活性和土壤养分含量在土层中的分布有一定的规律性,总的来说,随着土层逐渐加深,土壤酶活性逐渐减弱,土壤养分含量逐渐下降。混交林中各土层的pH值和含盐量都低于纯林相应值,并且在树木生长、土壤养分和土壤酶活性上,混交林优于纯林。The soil nutrient eontents and soil enzyme aetivities of different soil layers at different seasons in pure and mixed stands of Robinia pseudoacacia and Frascinus velutina were studied. The results indicate that there were soil nutrient eontents and soil enzyme aetivities differences between different stands, season and soil layers. And soil enzyme aetivities were remarkably eorrelated with suil nutrient eontents at different seasons. It＇s also shown that distributions of soil enzyme aetivities and soil nutrient eontents in different soil layers have some regularity, i. e. soil enzyme aetivity and nutrient eontent gradually deerease with soil layer deepening. The pH value and salt eontent in mixed stands were lower than the pure ones, but the growth of tree and soil enzyme aetivity and soil nutrient eontent were better than the pure ones.

关 键 词：剌槐 绒毛白蜡 混交林 土壤酶活性 土壤肥力 

分 类 号：S714[农业科学—林学] S158.3