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[1]JIA Guomei,XI Ying,XU Wennian,et al.Characteristics of the Activities of Soil Enzymes in Riparian Zone of Three Gorges Reservoir Area[J].Research of Soil and Water Conservation,2015,22(04):24-28.

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Characteristics of the Activities of Soil Enzymes in Riparian Zone of Three Gorges Reservoir Area

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 22 Number of periods: 2015 04 Page number: 24-28 Column: Public date: 2015-08-28

Title:: Characteristics of the Activities of Soil Enzymes in Riparian Zone of Three Gorges Reservoir Area

Author(s):: JIA Guomei^1,2, XI Ying¹, XU Wennian², CHEN Fangqing¹; 1. College of Biological and Pharmaceutical Sciences, Three Gorges Univiersity, Yichang, Hubei 443002, China;
2. Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, Three Gorges University, Yichang, Hubei 443002, China

Keywords:: soil quality; soil enzymes; organic carbon; microbial biomass carbon; riparian zone

CLC:: S151.9

DOI:: -

Abstract:: Soil enzyme catalyzes soil nutrient cycles and controls the function of ecosystem. The results showed that soil organic carbon(SOC), microbial biomass carbon(MBC), absolute activities of soil four enzymes:phosphatase(PNP), arylsulfatase(PNS), N-acetyl-β-glucosaminidase(NAG) and β-glucosidase (PAG)) (i. e. activity per dry soil mass) and the geometric mean of enzyme activities (GME) were lower in riparian zone than those of the never inundation of uplands(NI). In riparian zone, although the absolute activity of PNP increased with the elevation, there was no significant difference for the absolute activities of other soil three enzymes. The change in GME which was similar to the change in SOC and MBC, was lower in LI than MI and SI which had no significant difference in riparian zone. However, the change in the soil specific enzyme activities expressed either per unit of SOC or MBC was different from absolute activities of soil enzymes. There was no significant for PNP specific activity among sites measured, whereas PNS, NAG and PAG specific activities were higher in LI than other sites which were no significant difference. Therefore, the results suggested that GME was a suitable index to condense the whole set of soil enzyme values in a single numerical value, which was sensitive to the extent of soil quality degradation resulted from elevation gradient in riparian zone of Three Gorges Reservoir Area.

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