金银花林地土壤微生物量碳、氮与酶活性的分异特征  

Spatial Characteristics of Soil Microbial Biomass Carbon,Nitrogen and Enzyme Activities in Lonicera japonica Forest Land

作　　者：李源 何丙辉 秦华军 赵旋池 熊兴政 毛文韬 于传 王卫 Li Yuan;He Binghui;Qin Huajun;Zhao Xuanchi;Xiong Xingzheng;Mao Wentao;Yu Chuan;Wang Wei(Gaoxin Urban Construction Group Co.,Ltd of Chongqing Municipality,Chongqing 401329,China;College of Resources and Environment,Southwest University,Key Laboratory of Three Gorges Region Eco-environments,Ministry of Education,Chongqing 400715,China;Guizhou Institute of Biology,Guiyang,Guizhou 550000,China;Agricultural and rural Bureau of Huichuan District of Zunyi City,Guizhou Province,Guiyang,Guizhou 563000,China;Chongqing Forestry Investment Development Co.,Ltd,Chongqing 401120,China;Yinglong Town People's Government of Nan'an District of Chongqing Municipality,Chongqing 401336,China;Forestry Bureau Xiangtan Municipality of Hunan Province,Xiangtan,Hunan 411199,China;Academy of Forestry Sciences of Sichuan,Chengdu,Sichuan 610000,China)

机构地区：[1]重庆高新城市建设集团有限公司,重庆401329 [2]西南大学资源环境学院/三峡库区生态环境教育部重点实验室,重庆400715 [3]贵州省生物研究所,贵州贵阳550000 [4]贵州省遵义市汇川区农业农村局,贵州贵阳563000 [5]重庆市林业投资开发有限责任公司,重庆401120 [6]重庆市南岸区迎龙镇人民政府,重庆401336 [7]湖南省湘潭市林业局,湖南湘潭411199 [8]四川省林业科学研究院,四川成都610000

出　　处：《山地农业生物学报》2022年第5期67-73,共7页Journal of Mountain Agriculture and Biology

基　　金：国家林业局公益性行业科研专项课题(201104043);重庆市科技攻关重点项目(CSTC2009AB1115)。

摘　　要：为了解西南喀斯特地区金银花林地不同坡位及土壤剖面的微生物量碳氮和土壤酶活性,以重庆市秀山县青场镇南农村金银花林地为研究对象,分析比较3个坡位(上坡US、中坡MS、下坡BS)和2个剖面层次(表层0~10 cm,亚表层10~20 cm)的SMBC(土壤微生物量碳)、SMBN(土壤微生物量氮),_(q)MBC(微生物碳熵)、_(q)MBN(微生物氮熵),CAT(过氧化氢酶)、INV(蔗糖酶)、URE(脲酶)的分异特征及相关关系。结果表明:随坡位下降,URE递增,SMBC、SMBN、_(q)MBC、_(q)MBN、CAT、INV则先增加后减少,以中坡最大。表层SMBC、SMBN、_(q)MBC、_(q)MBN、CAT、INV、URE均高于亚表层。相关性分析结果显示SMBC、SMBN、_(q)MBC、_(q)MBN、CAT、INV、URE间存在显著(P<0.05)正相关关系。该研究支持了坡位、坡面是土壤微生物量碳氮和土壤酶活性分布的重要影响因素的观点。Soil microbial biomass carbon,nitrogen and enzyme activity were studied in soils of different slope position and profile in Lonicera japonica forest land of karst region of southwest China.In this paper,we researched on L.japonica forest land at Nannong village,Qingchang town,Xiushan state,Chongqing City,to analysis the spatial characteristics and correlation of three different slope position(Up Slope(US),Middle Slope(MS),Below Slope(BS))and two different surface layer(0~10 cm)and sub-surface layer(10~20 cm)on SMBC(soil microbial biomass carbon),SMBN(soil microbial biomass nitrogen),_(q)MBC(microbial carbon entropy),_(q)MBN(microbial nitrogen entropy),CAT(catalase),INV(invertase),URE(urease).The result showed that URE increased as the slope level decreases,while SMBC,SMBN,_(q)MBC,_(q)MBN,CAT and INV all first increased and then decreased,with the largest in the MS.In addition,there was the same trend(surface>sub-surface)observed for SMBC,SMBN,_(q)MBC,_(q)MBN,CAT,INV and URE in the same slope position.Correlation analysis indicated that there were significant(P<0.05)positive correlations among SMBC,SMBN,_(q)MBC,_(q)MBN,CAT,INV and URE in different slope position and profile level.This study supported that slope position and slope surface were important factors affecting the distribution of soil microbial biomass carbon,nitrogen and soil enzyme activities.

关 键 词：西南喀斯特地区 金银花林地 坡位 剖面 土壤微生物量 土壤酶活性 

分 类 号：X172[环境科学与工程—环境科学]