CAJ | 학술논문

为评估不同林龄的华山松（Pinus armandii）人工林土壤肥力对土壤酶活性的影响，运用通径分析研究了云南省玉溪市磨盘山国家森林公园内3种不同林龄华山松人工林土壤理化性质与土壤酶活性的关系。结果表明：华山松人工林在中龄林-近熟林-成熟林的发育进程中，土壤养分和土壤酶活性表现出较明显的表聚现象，并且各理化因子对土壤酶活性均有不同程度的影响。由相关系数和通径分析可知，土壤有机质和密度通过自身强烈的直接作用和通过其它理化因子的间接作用影响着酶活性的变化，是影响该区土壤酶活性的主导因子；土壤脲酶的活性主要受理化因子之间的间接作用影响；土壤全磷质量分数对土壤过氧化氢酶强烈的直接作用和通过其它理化因子表现出的间接作用使其在很大程度上决定着过氧化氢酶活性；土壤pH值是影响土壤转换酶活性的重要因素。
위평고불동림령적화산송（Pinus armandii）인공림토양비력대토양매활성적영향，운용통경분석연구료운남성옥계시마반산국가삼림공완내3충불동림령화산송인공림토양이화성질여토양매활성적관계。결과표명：화산송인공림재중령림-근숙림-성숙림적발육진정중，토양양분화토양매활성표현출교명현적표취현상，병차각이화인자대토양매활성균유불동정도적영향。유상관계수화통경분석가지，토양유궤질화밀도통과자신강렬적직접작용화통과기타이화인자적간접작용영향착매활성적변화，시영향해구토양매활성적주도인자；토양뇨매적활성주요수이화인자지간적간접작용영향；토양전린질량분수대토양과양화경매강렬적직접작용화통과기타이화인자표현출적간접작용사기재흔대정도상결정착과양화경매활성；토양pH치시영향토양전환매활성적중요인소。
In order to assess the influences of soil properties on soil enzyme activities in different age of Pinus armandii plantation,we studied the relations between soil properties and soil enzyme activities under three different ages of P.arman dii plantation by path analysis in Mopan Mountain of Yuxi, Yunnan Province.With the developing process of central aged for- est, nearly mature forest, mature forest of P.armandii plantation, the soil nutrients and soil enzyme activities accumulatedobviously on the soil surface and the soil enzyme activities were affected by soil properties in varying degrees.By correlationcoefficient and path analysis, the variation of three enzymes activity were directly affected by soil bulk density, soil organicmatter and indirectly affected by other soil properties including soil bulk density and soil organic matter.Soil bulk densityand soil organic matter were the dominant factors affecting three soil enzyme activity in this areas.Urease activity was influ- enced indirectly with other soil properties.Total phosphorus largely determined catalase activity because of its strong directand indirect effects with other soil properties.pH values was the important factor affecting invertase activity.