不同土地利用方式下土壤养分和酶活性的变化  

Change of Soil Nutrient and Enzyme Activities under Different Land Use

作　　者：梁毅[1,2] 杨慧[1] 曹建华[1] 卜巧珍[1,2] 李亮[1] 方培结[1,3] 王开然[1] 

机构地区：[1]中国地质科学院岩溶地质研究所国土资源部岩溶动力学重点实验室,广西桂林541004 [2]广西师范大学生命科学学院,广西桂林541004 [3]广西大学环境学院,广西南宁530004

出　　处：《广西师范大学学报（自然科学版）》2013年第1期125-129,共5页Journal of Guangxi Normal University:Natural Science Edition

基　　金：国家自然科学基金资助项目(40872213);中国地质调查局工作项目(水[2010]矿评03-07-02)

摘　　要：本文选择桂林大镜新寨林地、旱地、果园和灌丛4种不同土地利用方式下0～20、20～40、40～60cm3个深度的土壤样品,采用比色法测定土壤中脲酶、蔗糖酶和过氧化物酶3种酶的活性,研究土层深度与土壤酶活性的关系以及不同土地利用方式对土壤酶活性的影响。结果表明,同种土地利用方式,土壤脲酶和蔗糖酶的活性随着土层深度增加,酶活性逐渐降低,过氧化物酶活性随土层深度增加呈升高趋势;不同土地利用方式,同一土层深度土壤脲酶、蔗糖酶和过氧化物酶活性大小表现出明显的差异性。The relationship between soil depth and soil enzyme activity ,and the effect of soil enzyme activity under different land use are under research by choosing the 0-20 cm,20-40 cm and 40-60 cm soil layer of different land use which are woodland,dry land,orchards and shrubs,in Xinzhai,Dajing of Guilin. And the determination of enzyme activity of urease,invertase and peroxidase are tested by using colorimetric method. The results showed that the enzyme activity of soil urease and invertase reduced gradually with increased soil depth in same land use patterns. The peroxidase activity increased with increased soil depth. While under different land use patterns,the soil urease,invertase and peroxidase activity showed significant differences in size.

关 键 词：利用方式 土壤酶 脲酶 蔗糖酶 过氧化物酶 

分 类 号：S154.2[农业科学—土壤学]