摘要
贵州六盘水是中国西南喀斯特地区重要的矿产资源地,长期的开采给周边生态环境造成了负面影响,为六盘水煤矿区周边土壤修复和生态环境保护提供科学依据,采用土壤酶化学计量分析、相关性分析、单因素分析和冗余分析对六盘水典型煤矿区周边不同土地利用类型的[耕地(G1G)、林地(G1L)、植物复垦区(G1Z)、居民区(JD)]土壤养分以及酶活性特征进行研究。结果表明,煤矿区不同土地利用类型土壤pH值多偏中性和酸性,表层土壤pH值高于深层土壤,含水率、全磷(TP)、速效磷(AP)的含量在植物复垦区中最低,在耕地、林地中较高,且表层>深层。酸性磷酸酶(ACP)、β-1,4-葡糖苷酶(BG)、β-1,4-木糖苷酶(BX)、纤维素二糖水解酶(CBH)、β-1,4-乙酰-葡糖胺糖苷酶(NAG)、亮氨酸氨基肽酶(LAP)在植物复垦区酶活性含量均最低,且均低于矿区土地利用类型的平均值,而在林地、耕地、居民区中较高,且为表层>深层。pH值、有机质(SOM)、全氮(TN)均与CBH呈负相关;铵态氮和硝态氮与BG、LAP呈正相关。酶活性矢量长度介于0.018~0.120,矢量角度除了复垦区外其余土地利用类型均小于45°,得出复垦区土壤受磷限制,其余土地利用类型受氮限制。研究发现煤矿区土壤养分低,酶活性会受到一定的抑制,不同土地利用类型对土壤养分和酶活性均有显著影响(p<0.05)。
Liupanshui,Guizhou provinc is an important mineral resource in the karst area of southwest China.The long-term mining has caused a negative impact on the surrounding ecological environment,which provides scientific basis for soil restoration and ecological environment protection around the Liupanshui coal mining area.This paper used soil enzyme stoichiometric analysis,correlation analysis,single factor analysis and redundant analysis to study the characteristics of soil nutrients and enzyme activity of different land use types(arable land(G1G),forest land(G1L),plant reclamation area(G1Z),and residential area(JD)around Liupanshui typical coal mining area.The results showed that the soil pH value of different land use types in coal mining areas were mostly neutral and acidic,and the pH value of the surface soil was higher than that of the deep soil.The water content,total phosphorus(TP),and available phosphorus(AP)were the lowest in plant reclamation areas,and highest in cultivated land and woodland,and surface layer was higher than deep layer.Acid phosphatase(ACP),β-1,4-glucosidase(BG),β-1,4-xylosidase(BX),cellobiohydrolase(CBH),β-1,4-acetyl-Glucosamine glycosidase(NAG)and leucine aminopeptidase(LAP)had the lowest enzyme activity levels in plant reclamation areas,and among them were lower than the average value of land use types in mining areas.But they were high in forest land,cultivated land,and residential area,and the enzyme activity levels in surface layer was higher than in deep layer.pH,organic matter(SOM)and total nitrogen(TN)were all negatively correlated with(CBH).Ammonium nitrogen and nitrate nitrogen are positively correlated with(BG)and(LAP).The length of the enzyme activity vector was between 0.018 and 0.120,and the vector angle was less than 45°for all other land use types except for the reclaimed area.It was concluded that the soil in the reclaimed area was limited by phosphorus,and the other land use types are limited by nitrogen.The study found that soil nutrients in coal mining areas are low
作者
夏国栋
朱四喜
李武江
赵伟
高宁
赵斌
XIA Guodong;ZHU Sixi;LI Wujiang;ZHAO Wei;GAO Ning;ZHAO Bin(College of Eco-environment Engineering,Guizhou Minzu University,Guiyang,Guizhou 550025,China;The Karst Environmental Geological Hazard Prevention of Key Laboratory of State Ethnic Affairs Commission(Guizhou Minzu University),Guiyang,Guizhou 550025,China;The College of Humanities and Science of Guizhou Minzu University,Guiyang,Guizhou 550025,China)
出处
《中国无机分析化学》
CAS
北大核心
2022年第6期67-76,共10页
Chinese Journal of Inorganic Analytical Chemistry
基金
贵州省科技支撑计划项目(黔科合支撑[2018]2807)
国家自然科学基金资助项目(31560107)。
关键词
矿区土壤
土壤养分
酶活性
土壤修复
mining area soil
soil nutrient
enzyme activity
soil remediation
