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塔里木盆地南缘绿洲土壤酶活性与理化因子相关性

解丽娜 贡 璐 朱美玲 刘曾媛

解丽娜, 贡 璐, 朱美玲, 刘曾媛. 塔里木盆地南缘绿洲土壤酶活性与理化因子相关性[J]. 环境科学研究, 2014, 27(11): 1306-1313.
引用本文: 解丽娜, 贡 璐, 朱美玲, 刘曾媛. 塔里木盆地南缘绿洲土壤酶活性与理化因子相关性[J]. 环境科学研究, 2014, 27(11): 1306-1313.
XIE Li-na, GONG Lu, ZHU Mei-ling, LIU Zeng-yuan. Soil Enzyme Activities and Their Correlation with Physicochemical Factors in the Oasis of Southern Margin of Tarim Basin[J]. Research of Environmental Sciences, 2014, 27(11): 1306-1313.
Citation: XIE Li-na, GONG Lu, ZHU Mei-ling, LIU Zeng-yuan. Soil Enzyme Activities and Their Correlation with Physicochemical Factors in the Oasis of Southern Margin of Tarim Basin[J]. Research of Environmental Sciences, 2014, 27(11): 1306-1313.

塔里木盆地南缘绿洲土壤酶活性与理化因子相关性

基金项目: 国家重点自然科学基金项目(U1138303)

Soil Enzyme Activities and Their Correlation with Physicochemical Factors in the Oasis of Southern Margin of Tarim Basin

  • 摘要: 基于塔里木盆地南缘于田绿洲土壤酶活性与水盐、养分等理化因子数据,利用冗余分析技术(RDA)全面分析了土壤酶活性与理化因子间的关系. 结果显示:①于田绿洲土壤酶活性总体水平较低,过氧化氢酶(以KMnO4计)、转化酶(以Na2S2O3计)、脲酶(以NH3-N计)和碱性磷酸酶(以C6H6O计)活性平均值分别为9.37、2.04、0.27和0.18 mg/g;研究区土壤水分含量(15.46%,以w计)较少且盐渍化严重〔w(全盐)平均值为19.39 g/kg〕. ②w(有机质)、土壤水分含量、地下水埋深和w(有效磷)是影响土壤酶活性的主要因素,w(有机质)、土壤水分含量、w(有效磷)与土壤酶活性呈正相关,地下水埋深与土壤酶活性呈负相关. ③各理化因子对土壤酶活性影响的重要性排序为w(有机质)、土壤水分含量、地下水埋深、w(有效磷)、pH、w(全盐)、电导率、w(速效钾). 综合分析表明,研究区强盐渍化的土壤性质对土壤酶活性的抑制并不显著,土壤碳、磷等养分与水分状况才是限制土壤酶活性的关键因素.

     

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出版历程
  • 收稿日期:  2013-12-10
  • 修回日期:  2014-07-30
  • 刊出日期:  2014-11-25

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