广西秦王老山之土壤

Soil of Qinwang Old Mount in Guangxi

秦王老山地处广西西部 ,主峰海拔 2 0 6 2m ,相对高差约 1 6 0 0m ,是广西第四高峰。在亚热带季风气候影响下 ,以常绿———落叶阔叶混交林为主的自然森林 ,植被生长茂盛 ,土壤矿物风化强烈。成土过程主要是脱硅富铝化过程和旺盛的生物富集过程。主要土壤类型为红壤和黄壤。土壤的垂直分布规律明显。基带土壤为红壤 ,自山麓至山顶依次为山地红壤、山地黄红壤、山地黄壤、山地漂白黄壤。土壤质地多为壤土至粘壤土 ,土壤剖面层次发育明显 ,盐基和粘粒的淋溶迁移、淀积作用强烈 ,全剖面呈酸性至强酸性反应 ,盐基高度不饱和 ,阳离子代换量低 ,但表土有机质含量较丰富 ,且明显随海拔高度的升高而增多 ,故自然肥力高 ,森林茂密 ,是广西重要的水源林之一。

Qinwang Old Mount is located in the west of Guangxi with an altitude rising to 2062 meters above the level and a relative altitude of about 1600 meters.Under the subtropical monsoon climate,the vegetation there is native forest mainly composed of evergreen deciduous forest and broad-leaved forest.And the pedogenetic weathering process of the mountain is of allitization and biological enrichment,resulting in the mountain red earth and yellow earth as the principal soil types.Meanwhile,thanks to the obvious altitudinal zonation of soil,its natural fertility and dense forest vegetation, the mountain has been classified to be one of those crucial water conservancy forests.