淮南大通矿区复垦土壤微生物量碳氮的分布特征  

Spatial Characteristics of Soil Microbial Biomass Carbon and Nitrogen in Datong Reclaimed Coal Mine Area of Huainan Region

作　　者：张杰琼 方凤满[1,2] 余健[1] 江培龙[1] 邓正伟[1] 林跃胜[1] 

机构地区：[1]安徽师范大学国土资源与旅游学院,安徽芜湖241003 [2]安徽自然灾害过程与防控研究省级实验室,安徽芜湖241003

出　　处：《水土保持通报》2014年第3期267-270,共4页Bulletin of Soil and Water Conservation

基　　金：教育部博士点基金博导类课题"矿区重金属污染土壤的健康风险评估及生态安全调控研究"(20103424110002);国家自然科学基金项目"煤矿区儿童对室内细粒径灰尘中重金属暴露特征及健康风险研究"(41371480)

摘　　要：通过野外调查和室内分析,研究了淮南大通煤矿复垦区表层(0—10cm)土壤理化性质及微生物量碳(SMBC)、微生物量氮(SMBN)的分布特征。结果表明,耕地(油菜地、小麦地、蔬菜大棚)土壤有机碳、氮、磷等含量均高于林地,而土壤pH值则相反。土壤SMBC含量依次为:蔬菜大棚>油菜地>小麦地>林地>对照样,蔬菜大棚显著高于其他农业用地方式。土壤SMBN则为:蔬菜大棚>小麦地>油菜地>林地,林地土壤微生物量氮显著低于其他农业用地方式。林地土壤微生物商最高,表明在有机质积累的同时林地更有利于土壤微生物活动。土壤微生物量碳氮之间显著相关,进一步证实土壤微生物量碳、氮可以作为表征土壤肥力的敏感因子。Spatial characteristics of soil physiochemical properties, soil microbial biomass carbon（SMBC） and soil microbial biomass nitrogen （SMBN） within 10 cm of soil surface in the Huainan reclaimed coal mine area were studied through field investigation and laboratory analysis. Results showed that contents of soil organic matter, nitrogen, phosphorus in cultivated lands（rape, wheat and vegetable greenhouse） were higher than those in woodland, but soil pH value was opposite. The land uses, in order of decreasing SMBC content, were vegetable greenhouse, rape, wheat, woodland and the control. Moreover, the SMBC content in vegeta- ble greenhouse was significantly higher than the other cultivted land uses. The land uses, in order of decrea- sing SMBN content, were vegetable greenhouse, wheat, rape and woodland. The SMBN content in wood- land was significantly higher than the other agricultural land uses. The soil microbial quotient was the highest in woodland, indicating that woodland was more suitable to soil microbial activities and soil organic matter accumulation. There was a significant correlation between the SMBC and SMBN, which further confirms that the SMBC and SMBN can be used as the sensitive factors to characterize the soil fertility.

关 键 词：煤矿复垦区 土壤微生物量碳 土壤微生物量氮 农业用地方式 大通矿区 

分 类 号：X75[环境科学与工程—环境工程]