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中文摘要：
采用现场实测与实验室分析相结合的研究方法,对贵州龙里林场外来引进树种湿地松Pinus elliottii人工林及本地树种马尾松Pinus massoniana人工林不同土壤层理化性质及养分元素特征进行了研究。结果表明：2种林分土壤pH值为4.38~4.53,均表现为弱酸性;湿地松人工林有机质、全氮、磷、钾、钙含量均高于马尾松人工林;微量元素Fe、Cu、Zn、Mn、Co、Cr在2种林分中差异显著（P〈0.05）;主成分分析法表明林分综合环境因子变量各指标受影响程度为NH4-N〉Zn〉速效P〉Co〉Mn〉Cu〉Mg〉N〉P〉速效K。这些数据表明,马尾松人工林对各养分元素的利用效率均高于湿地松人工林,马尾松的生长对养分的渴求高于湿地松。
英文摘要：
In this study, we applied field sampling and soil property analysis methods to investigate the soil nutrients difference between introduced afforestation species slash pine （Pinus elliottii） and native species masson pine （Pinus massoniana） plantations in Longli forest farm, Guizhou, China. The results showed that： a） pH value ranges from 4.38-4.53, indicate the soil belonging to acid-sotl type; b） the content of organic matter, total N, total P, total K, and Ca were significantly （p 〈 0.05） higher in slash pine plantation when comparing with masson pine; c） micronutrients Fe, Cu, Zn, Mn, Co, Cr were significantly （p 〈 0.05） higher in slash pine plantation; d） Principe Cardinal Analysis results showed that the main factors of soil property was affected by NtL-N 〉 Zn 〉 available P 〉 Co 〉 Mn 〉 Cu 〉 Mg 〉 N 〉 P 〉 available K. The results imply that masson pine had a higher ability to acculmulate soil macro- and micronutrient in that case masson pine is eager for more soil nutrients.
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