松嫩平原西部退化盐碱草地土壤酶活性的季节动态  

Seasonal Dynamics of Soil Enzymatic Activities in West Songnen Alkali Degraded Grassland

作　　者：岳中辉[1,2] 王博文[1] 王洪峰[1] 阎秀峰[1] 

机构地区：[1]东北林业大学生命科学学院,东北林业大学林木遗传育种与生物技术教育部重点实验室,黑龙江哈尔滨150040 [2]哈尔滨师范大学生命科学与技术学院,黑龙江哈尔滨150025

出　　处：《水土保持学报》2008年第6期162-165,共4页Journal of Soil and Water Conservation

基　　金：国家科技支撑计划资助项目(2006BAC01A08);黑龙江省自然科学基金重点资助项目(ZJN0502-01);黑龙江省教育厅科技资助项目(11521065)

摘　　要：对松嫩平原西部退化盐碱草地土壤过氧化氢酶、过氧化物酶、多酚氧化酶、蛋白酶、转化酶及碱性磷酸酶活性的季节动态进行研究,结果表明:土壤过氧化物酶、蛋白酶和转化酶活性在碱斑及不同退化程度盐碱草地中的季节变化趋势不同,而过氧化氢酶、多酚氧化酶和碱性磷酸酶活性的季节变化趋势基本一致,其峰值出现在8月或9月;在不同退化程度的盐碱草地中,各种酶活性的季节变化幅度不同,过氧化氢酶、多酚氧化酶和碱性磷酸酶活性在中度、重度盐碱化草地中的变化幅度大于轻度盐碱化草地,而过氧化物酶、蛋白酶和转化酶活性在中度、重度盐碱化草地中的变化幅度小于轻度盐碱化草地;不同退化程度的盐碱草地中,酶活性季节动态间的相关关系不同。Seasonal dynamics of soil catalase （CAT）,peroxidase （PEX）, polyphenol oxidase （POX）,protease （PRO）,invertase（INT） and alkali phosphotase（ALP） activities in west Songnen alkali degraded grassland are examined. The results indicate that the changing patterns of PEX,PRO,INT activities vary from season to season, while CAT, POX, ALP activities bear the same changing tendency and their peak value appears in August or September in alkali spot, severe, moderate and mild degraded soils. Enzymatic activities of different seasons have the various ranges in different degraded types of soil. Changing ranges of CAT,POX and ALP in moderate and severe salinization soil are more than that in mild soil. However,changing ranges of PEX, PRO and INT activities in moderate and severe salinization soils are less than that in mild soil. There is seasonal relevance between different enzymatic activities,but they are different in different types of soil.

关 键 词：土壤酶活性 季节动态 退化盐碱草地 

分 类 号：S154.2[农业科学—土壤学]