酚酸对杨树人工林土壤养分有效性及酶活性的影响

应用生态学报

酚酸对杨树人工林土壤养分有效性及酶活性的影响

王延平^1,2,王华田^1,2**,许坛¹,倪桂萍¹,姜岳忠³

(¹山东农业大学林学院, 山东泰安 271018; ²国家林业局泰山森林生态系统定位研究站, 山东泰安 271018;
³山东省林业科学研究院, 济南 250014)

出版日期:2013-03-18 发布日期:2013-03-18

Effects of exogenous phenolic acid on soil nutrient availability and enzyme activities in a poplar plantation.

WANG Yan-ping^1,2, WANG Hua-tian^1,2， XU Tan¹, NI Gui-ping¹, JIANG Yue-zhong³

(¹College of Forestry, Shandong Agricultural University, Tai’an 271018, Shandong, China; ^2Taishan Forest Ecosystem Research Station, State Forestry Administration, Tai’an 271018, Shandong, China; ³Shandong Academy of Forestry, Ji’nan 250014, China)

Online:2013-03-18 Published:2013-03-18

摘要/Abstract

摘要：

采用离子交换树脂膜作为根系模拟器,研究杨树人工林土壤在酚酸环境中养分有效性及酶活性的变化.结果表明: 酚酸能显著影响杨树人工林土壤养分有效性和土壤酶活性,且二者受酚酸的影响具有显著的浓度效应和时间效应.随酚酸浓度增大,土壤中NH₄⁺-N、NO₃^--N的提取量均显著下降.在高浓度酚酸环境中,PO₄^3-、Mn²⁺的有效性显著提高,而K⁺、Fe³⁺的有效性被显著抑制;脲酶和碱性磷酸酶活性显著降低,而过氧化氢酶和多酚氧化酶活性则呈显著升高的趋势.随培养时间的延长,土壤中NH₄⁺-N、PO₄^3-、Mn²⁺的有效性逐渐增加,而NO₃^--N、K⁺、Fe³⁺、Zn²⁺的有效性显著降低.相关分析表明,脲酶、多酚氧化酶、碱性磷酸酶活性与NO₃^--N、K⁺、Fe³⁺、Mn²⁺等的有效性相关性较高.

Abstract: By using ion exchange resin membrane as a plant root simulator, this paper studied the variations of soil nutrient availability and enzyme activities in a poplar plantation after applying phenolic acid. The exogenous phenolic acid had significant effects on the soil nutrient availability and enzyme activities, and the effects were concentration and time dependent. With increasing phenolic acid concentration, the extraction mass of soil NH₄⁺-N and NO₃^--N decreased significantly. At high concentration phenolic acid, soil PO₄^3- and Mn²⁺ availability increased significantly while soil K⁺ and Fe³⁺ availability was in adverse, and soil urease and phosphatase activities had a significant decrease while soil catalase and polyphenol oxidase activities increased significantly. With the elongation of incubation time, the availability of soil NH₄⁺-N, PO₄^3-, and Mn²⁺ increased gradually, while that of soil NO₃^--N, K⁺, Fe³⁺, and Zn²⁺ decreased significantly. The correlation analysis showed that the availability of soil NO₃^--N, K⁺, Fe²⁺, and Mn^2+ had close correlations with the activities of soil urease, polyphenol oxidase, and phosphatase.

王延平1,2,王华田1,2**,许坛1,倪桂萍1,姜岳忠3. 酚酸对杨树人工林土壤养分有效性及酶活性的影响[J]. 应用生态学报.

WANG Yan-ping1,2, WANG Hua-tian1,2， XU Tan1, NI Gui-ping1, JIANG Yue-zhong3. Effects of exogenous phenolic acid on soil nutrient availability and enzyme activities in a poplar plantation.[J]. Chinese Journal of Applied Ecology.