摘要
土壤酶活性的高低可以直接或间接反映土壤肥力和土壤健康程度。研究选取烟台市黄务镇破坏山体周边7种植被恢复模式,测定土壤脲酶、多酚氧化酶、过氧化物酶、过氧化氢酶活性及土壤理化性质和细菌、真菌、放线菌数量。目的是探讨不同植被恢复模式对土壤酶活性的影响机制,为合理恢复植被提供参考依据。结果表明:不同植被恢复模式的土壤酶活性表现为0-10cm土层高于10-20cm土层;对土壤酶活性的改善作用为混交林>纯林>灌草丛,人工植被恢复模式中以黑松麻栎混交林最优;土壤酶活性具有显著差异(P<0.05),其中以脲酶差异最为显著,与自然恢复的灌草丛相比,0-10cm土层脲酶活性增加44.71%～231.79%,10-20cm土层脲酶活性增加163.00%～959.00%;4种酶的活性均与有机质有密切的关系,提高土壤有机质的含量可以增强酶活性;脲酶、过氧化物酶、过氧化氢酶之间存在密切关系,并且三者与微生物含量的相关性也达到显著水平(P<0.05),其中脲酶和多酚氧化酶可以作为破坏山体土壤质量评价的指标。破坏山体植被恢复过程中应以营造针阔混交林为主。
The soil enzyme activities can reflect the soil fertility and healthy status directly or indirectly.Soil samples were collected from 7 revegetations in Huangwu county,Yantai city,Shandong province,and their activities of urease,peroxidase,catalase and polyphenol oxidase,soil physicochemical properties,number of soil bacteria,actinomycete and fungus were measured.Its aim is to analyze the impact mechnism of revegetation types on the soil enzyme activities to provide scientific references for reasonable vegetation restoration.The results showed as the following： The soil enzyme activities in 0-10 cm layer under different revegetation types were higher than those of 10-20 cm;The order of increasing soil enzyme activities was mixed forests,pure forests,and brushwood,in which the mixed Pinus thunbergii and Quercus acutissima forest was the best one;there were significant differences among the soil enzyme activities of different revegetation types,especially that of the urease,which increased from 44.71% to 231.79% in 0-10 cm layer and from 163.00% to 959.00% in 10-20 cm layer compared with natural brushwood;There were positive relationships between soil organic and 4 soil enzymes,and the soil enzymes activities increased with the organic matter content increasing;There were positive relationships amomg soil catalase,soil peroxidase and soil urease,and together with that between them and soil microbes;The activities of soil urease and soil polyphenol oxidase could be regarded as indexes to assess soil quality around the coastal damaged mountain.Mixed conifer and broadleaf forest should be chosen priority to other vegetation types during the restoration process in the future.
出处
《水土保持学报》
CSCD
北大核心
2011年第5期112-116,共5页
Journal of Soil and Water Conservation
基金
国家自然科学基金"沿海黑松构筑型的可塑性及其调控技术研究"(30872070)
山东省生态省创新工程"荒山绿化关键技术研究与示范"(SDSP2005-0410-06)
山东省科技攻关项目(2010GSF10630)
关键词
土壤酶活性
土壤微生物
土壤理化性质
土壤质量
破坏山体
soil enzyme activities
soil microbe
soil physicochemical properties
soil quality
damaged mountain
作者简介
张刘东（1986--），男，硕士研究生，主要从事林业生态工程和植被恢复与重建研究。E—mail：zhangliudong113627@L63.com
通讯作者：李传荣（1968-），男，教授，主要从事森林生态学和林业生态工程研究。E-mail：chrli@sdau．edu.cn
