IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Soil Enzyme Activities on Eroded Slopes in the Sichuan Basin, China
Nie Xiaojun1; Zhang Jianhui2; Gao Han1
Corresponding AuthorZhang Jianhui
2015
Source PublicationPEDOSPHERE
ISSN1002-0160
EISSN2210-5107
Volume25Issue:4Pages:489-500
SubtypeArticle
AbstractDetermining how soil erosion affects enzyme activity may enhance our understanding of soil degradation on eroded agricultural landscapes. This study assessed the changes in enzyme activity with slope position and erosion type by selecting water and tillage erosion-dominated slopes and performing analyses using the Cs-137 technique. The Cs-137 data revealed that soil loss occurred in the upper section of the two eroded slope types, while soil accumulation occurred in the lower section. The invertase activity increased downslope and exhibited a pattern similar to the Cs-137 data. The spatial patterns of urease and alkaline phosphatase activities were similar to the Cs-137 inventories on the water and tillage erosion-dominated slopes, respectively. On both the eroded slope types, the invertase activity and soil organic carbon content were correlated, but no correlation was observed between the alkaline phosphatase activity and total phosphorus content. Nevertheless, the urease activity was correlated with the total nitrogen content only on the water erosion-dominated slopes. The enzyme activity-to-microbial biomass carbon ratios indicated high activities of invertase and urease but low activity of phosphatase on the water erosion-dominated slopes compared with the tillage erosion-dominated slopes. Both the invertase activity and the invertase activity-to-microbial biomass carbon ratio varied with the slope position. Changes in the urease activity-to-microbial biomass carbon ratio were significantly affected by the erosion type. These suggested that the dynamics of the invertase activity were linked to soil redistribution on the two eroded slope types, whereas the dynamics of the urease and alkaline phosphatase activities were associated with soil redistribution only on the water or tillage erosion-dominated slopes, respectively. The erosion type had an obvious effect on the activities of invertase, urease and alkaline phosphatase. Soil redistribution might influence the involvement of urease in the N cycle and alkaline phosphatase in the P cycle. Thus, enzyme activity-to-microbial biomass ratios may be used to better evaluate microbiological activity in eroded soils.
KeywordCs-137 Technique Microbial Biomass c n Cycle p Cycle Soil Organic c Soil Redistribution Tillage Erosion Water Erosion
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS Subject ExtendedAgriculture
Indexed BySCI
WOS KeywordSEMIARID MEDITERRANEAN AGROECOSYSTEM ; MICROBIAL BIOMASS ; TILLAGE EROSION ; ORGANIC-CARBON ; LOESS PLATEAU ; ARYLSULFATASE ACTIVITIES ; BIOCHEMICAL-PROPERTIES ; ARABLE FIELDS ; LAND-USE ; REDISTRIBUTION
Language英语
Quartile3区
TOP
WOS SubjectSoil Science
WOS IDWOS:000358630600001
Funding OrganizationNational Natural Science Foundation of China(41001157) ; 135 Strategic Program of the Institute of Mountain Hazards and the Environment, Chinese Academy of Sciences(SDS-135-1206) ; Young Teacher Foundation of Henan Polytechnic University, China
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Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10821
Collection山地表生过程与生态调控重点实验室
Affiliation1.Henan Polytech Univ, Land Res Integrated Monitoring & Sustainable Util, Minist Land & Resources China, Sch Surveying & Land Informat Engn, Jiaozuo 454003, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China
Recommended Citation
GB/T 7714
Nie Xiaojun,Zhang Jianhui,Gao Han. Soil Enzyme Activities on Eroded Slopes in the Sichuan Basin, China[J]. PEDOSPHERE,2015,25(4):489-500.
APA Nie Xiaojun,Zhang Jianhui,&Gao Han.(2015).Soil Enzyme Activities on Eroded Slopes in the Sichuan Basin, China.PEDOSPHERE,25(4),489-500.
MLA Nie Xiaojun,et al."Soil Enzyme Activities on Eroded Slopes in the Sichuan Basin, China".PEDOSPHERE 25.4(2015):489-500.
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