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东北阔叶红松林腐殖质层土壤阳离子交换性能及其主要影响因素

田圣贤1,2,冯盼1,2,杨山2,3,刘贺永2,3,叶吉2,李慧2,姜勇2,张玉革1*   

  1. 1沈阳大学环境学院, 沈阳 110044; 2中国科学院沈阳应用生态研究所, 沈阳 110016;3沈阳农业大学土地与环境学院, 沈阳 110866)
  • 出版日期:2018-09-10 发布日期:2018-09-10

Soil cation exchange capacity and its main impact factors in the humic layer of broad-leaved Korean pine forest in northeast China.

TIAN Sheng-xian1,2, FENG Pan1,2, YANG Shan2,3, LIU He-yong2,3, YE Ji2, LI Hui2, JIANG Yong2, ZHANG Yu-ge1*   

  1. (1College of Environmental Science, Shenyang University, Shenyang 110044, China; 2 Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; 3College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, China).
  • Online:2018-09-10 Published:2018-09-10

摘要: 阔叶红松林是中国东北地区的典型地带性植被,生物多样性丰富,是我国重要的生态资源。本文分析了9个纬度阔叶红松林腐殖质层土壤交换性Ca、Mg、K、Na、有效阳离子交换量(ECEC)、交换性酸等的分布及其主要影响因素。结果表明,腐殖质层土壤具有较强的盐基元素生物富集功能;土壤交换性盐基离子和ECEC纬度分异不明显;年均温或年均降水量影响土壤交换性Mg和K含量。土壤有机质和pH是交换性盐基离子和ECEC分布的主导影响因素,且均为正向影响。土壤交换性酸含量与ECEC、pH呈极显著负相关关系。

关键词: 甘薯, 根系形态, 内源激素, 叶绿素荧光参数, 干旱胁迫

Abstract: Broad-leaved Korean pine (Pinus koraiensis) forest, a typical zonal vegetation in northeast China, harbors high biodiversity and is an important ecological resource. This study focused on the distribution of soil exchangeable cations Ca, Mg, K and Na, effective cation exchange capacity (ECEC), and exchangeable acidity as well as its main driving factors in the humic layer of the broad-leaved Korean pine distribution zone across nine degree of latitudes in northeast China. Results showed that the humic layer soils were biologically enriched with basal elements. The concentrations of soil exchangeable cations and ECEC had no obvious latitudinal variation. The concentration of exchangeable Mg and K were related with mean annual temperature or mean annual precipitation. Soil organic matter and pH were the two driving factors with positive effects on the distributions of base cations and ECEC. Soil exchangeable acidity was negatively correlated with ECEC and pH.

Key words: endogenous hormone., root morphology, drought stress, sweet potato, chlorophyll fluorescence parameter