CAJ | 학술논문

以宜宾市高县8个不同林龄马尾松人工林为研究对象，采用空间替代时间的研究方法，对各林龄不同形态磷质量分数及其随林龄的变化特征、不同林龄和不同土层间磷素质量分数的差异性、不同土层磷质量分数与土壤理化性质的相关性进行研究，结果表明：各林龄土壤全磷质量分数及其对应不同土层质量分数均大于1 g· kg-1，处于较高水平，而速效磷质量分数表现为亏缺；随着林龄的增长，马尾松人工林土壤全磷和速效磷呈波状变化，在3、14和40 a表现出极大值；全磷和速效磷在0～20 cm质量分数均高于20～40 cm，且不同土层土壤速效磷的质量分数差异性极显著（p＜0．01）；不同林龄间土壤全磷和速效磷质量分数差异性显著；相关性分析表明不同土层全磷、速效磷质量分数与有机质显著相关（p＜0．05），0～20 cm土层全磷、速效磷质量分数与pH值也显著相关（p＜0．05），20～40 cm土层全磷和速效磷与有机质和pH值的相关性不显著。
이의빈시고현8개불동림령마미송인공림위연구대상，채용공간체대시간적연구방법，대각림령불동형태린질량분수급기수림령적변화특정、불동림령화불동토층간린소질량분수적차이성、불동토층린질량분수여토양이화성질적상관성진행연구，결과표명：각림령토양전린질량분수급기대응불동토층질량분수균대우1 g· kg-1，처우교고수평，이속효린질량분수표현위우결；수착림령적증장，마미송인공림토양전린화속효린정파상변화，재3、14화40 a표현출겁대치；전린화속효린재0～20 cm질량분수균고우20～40 cm，차불동토층토양속효린적질량분수차이성겁현저（p＜0．01）；불동림령간토양전린화속효린질량분수차이성현저；상관성분석표명불동토층전린、속효린질량분수여유궤질현저상관（p＜0．05），0～20 cm토층전린、속효린질량분수여pH치야현저상관（p＜0．05），20～40 cm토층전린화속효린여유궤질화pH치적상관성불현저。
With eight different stand ages of Masson pine plantation in Gao County of Yibin, we studied the different forms of P content and its variation with stand ages, differences of soil Pontent among different stand ages and soil layers, and correla-tion between soil P content and other soil properties by the method of space for time.P contents of total and different soil layers are more than 1 g· kg-1 at a high level, but the available P is deficient.With the stand age growth, soil total P and available P are changing as wave and appear the maximas in 3, 14, and 40 year-old Pinus massoniana plantation.Further-more, the total P and available P in 0-20 cm are more than those in 20-40 cm, and appear significant differences among different stand ages.The significant correlation is between soil available P and soil organic matter at 0.05.There is a sig-nificant correlation between soil total P, available P content and pH in soil of 0-20 cm.Whereas, there is no significant correlation between soil total P and available P in 20-40 cm.