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[1]HE Xue-min,LV Guang-hui,QIN Lu,et al.Effects of Heavy Metals on Soil Enzyme Activities in Typical Arbor-shrub Communities under the Different Water and Salt Conditions in Ebinur Lake Area[J].Research of Soil and Water Conservation,2012,19(06):94-99.

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Effects of Heavy Metals on Soil Enzyme Activities in Typical Arbor-shrub Communities under the Different Water and Salt Conditions in Ebinur Lake Area

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 19 Number of periods: 2012 06 Page number: 94-99 Column: Public date: 2012-12-20

Title:: Effects of Heavy Metals on Soil Enzyme Activities in Typical Arbor-shrub Communities under the Different Water and Salt Conditions in Ebinur Lake Area

Author(s):: HE Xue-min^1,2, LV Guang-hui^1,2, QIN Lu^1,2, MA Hui-ying^1,2, HE Xue-fen^1,2; 1. Xinjiang Key Laboratory of Oasis Ecology, Ministry of Education, Urumqi 830046, China;
2. College of Resources and Environmental Science, Xinjiang University, Urumqi 830046, China

Keywords:: Ebinur Lake; typical arbor-shrub communities; stress of soil water and salt; soil heavy metals; soil enzyme activities

CLC:: X53

DOI:: -

Abstract:: In order to explore the effects of heavy metals on soil enzyme activities under the stress of water and salt, 5 kinds of heavy metals (Cd, Cr, Cu, Mn and Zn) and four kinds of enzymes (Catalase, Phosphatase, Urease and Sucrase) were examined in three kinds of typical arbor-shrub communities(Populus euphratica, Tamarix ramosissima and Haloxylon ammodendron) under the different habitats in Ebinur Lake Area. The results indicated that different communities had their own characteristics in terms of soil moisture, salt, enzyme activities and heavy metals contents. Heavy metal contents exerted more intense influence on Catalase, particularly in Haloxylon ammodendron which belonged to drought-tolerant plant, Cd, Cr and Zn had a certain influence on enzyme activities under limited soil moisture situations. There were better water and salt environment, and less heavy metal contents in natural soil in which soil enzyme activities were well prompted by heavy metal. Soil enzyme activities were restrained significantly by salt press when the heavy metal contents were less. Water stress imposed little restrictions on enzyme activities, and soil heavy metal contents had less influence on enzyme activities than that of the soil total soluble salt, demonstrating that soil salt stress decreased enzyme activities intensively under natural conditions. Cd and Cr played active function in soil enzyme activities, and Cu had no obvious effect on soil enzyme activities, however, Mn and Zn played inhibitory function in soil enzyme activities.

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