论文部分内容阅读
2008年7—9月,测定了辽东山区次生林生态系统5种主要林型(落叶松人工林、花曲柳林、杂木林、红松人工林和蒙古栎林)中穿透雨和林外雨的理化性质.结果表明:与林外雨相比,5种林型穿透雨均出现明显的酸化(P<0.05),其酸化程度为:红松林>落叶松林>杂木林>蒙古栎林>花曲柳林;各林型的穿透雨电导率和总溶解固体含量显著升高(P<0.05),为蒙古栎林>花曲柳林>落叶松林>杂木林>红松林;穿透雨的溶解氧浓度显著降低(P<0.05),为红松林>杂木林>花曲柳林>蒙古栎林>落叶松林;穿透雨中Cl-浓度较林外雨明显升高,为落叶松林>蒙古栎林>杂木林>花曲柳林>红松林;花曲柳林、蒙古栎林和杂木林穿透雨中NO-浓度均高于林外雨,而落叶松林和红松林NO-浓度低于林外雨.
From July to September in 2008, five main forest types (larch plantation, Huashuiliu, mixed forest, Korean pine plantation and Quercus mongolica plantation) in the secondary forest ecosystems of Liaodong mountainous area were measured. (P <0.05). The acidification degree of the five forest types was: Korean pine forest> Larix forest> Mixed forest> Mongolian oak forest> (P <0.05). The results were as follows: Quercus mongolica> Fraxinus mandshurica> Larix gmelinii> Shrub forest> Pinus koraiensis forest; penetration of rain (P <0.05). The results showed that Pinus koraiensis> Quercus mongolica> Larix gmelinii forest> Pinus koraiensis forest> Larix gmelinii forest> Pinus koraiensis forest> Larix gmelinii forest> Quercus mongolica> Quercus mongolica> Fraxinus mandshurica> Pinus koraiensis forest; the NO- concentrations of Periwinkle forest, Quercus mongolica forest and mixed forest were higher than those of rain forest, while the concentrations of NO- Rain outside.