天津科技大学学报2017，Vol.32Issue(5)：55-59,5.DOI:10.13364/j.issn.1672-6510.20160064
极端干旱事件后湿地落干土壤微生物和酶活性研究
Soil Microbial and Enzyme Activities in Air-drying Zones of Wetland after Extreme Drought
摘要
Abstract
This study investigated a number of soil microbial colonies,the characteristics of soil enzyme activitiesand soil nutrient content as well as the spatial difference among different air-drying zones of Baiguishan Reservoir Wetland after extreme drought through field sampling and statistical analysis.The results showed that the number of becteria,fungi and actinomycetes in the colonies were 40.83×106-115.78×106,g-1,1.62×106-27.14×106,g-1,and 0.55×106-1.29×106,g-1, respectively.The number of soil bacteria was higher than those of soil actinomycetes and soil fungi.The number of soil bac-teria in sandy sites was generally lower than that in the muddy sites.The soil microbial quantity and the soil enzyme activi-ties were not significantly in positive correlation with soil organic matter content or soil nitrogen content(P>0.05),which showed that the mineralization of soil organic matter had not got to a certain extent possibly due to the relatively short time of the soil dry fall.The high content of total phosphorus and total potassium might inhibit the soil enzyme activity.The man-agers should pay more attention to the spatial heterogeneity of soil properties and the duration of interference in Baiguishan Reservoir Wetland in the future.关键词
土壤酶/土壤养分/土壤微生物/湿地/极端干旱Key words
soil enzyme/soil nutrient/soil microbial/wetland/extreme drought分类
农业科技引用本文复制引用
李彦娇,赵干卿,彭舜磊,陈昌东,廖秉华,刘丹丹..极端干旱事件后湿地落干土壤微生物和酶活性研究[J].天津科技大学学报,2017,32(5):55-59,5.基金项目
河南省科技攻关计划资助项目(142102310186) （142102310186）
河南省教育厅科学技术研究重点资助项目(13A180821) （13A180821）
