杉木采伐迹地轮作马尾松后的土壤肥力变化

The Change of Soil Fertility of Chinese fir pine Slash after Rotation

以福建省长汀县楼子坝国有林场杉木连栽(AA)、杉木—马尾松—杉木(ABA)轮作及杉木—马尾松轮作(AB)等3种利用方式林地为研究对象,研究了三种林地更新方式的土壤物理性质、有机质及全氮含量的变化规律,结果表明:不同土地利用方式的土壤物理性质、有机质和全氮差异均达显著性水平。物理性质方面,上坡的不同土层表现出杉木—马尾松—杉木轮作下的土壤水分条件比杉—杉连栽地的土壤中相对较好,而在中坡和下坡各个土层则没有明显规律;上坡和下坡的杉木—马尾松—杉木轮作下的土壤有机质和全氮规律较为明显,均表现出随着土层深度的增加而减小的趋势,但中坡不同林分类型及不同土层变化规律各不相同。

Based on the Chinese fir state owned forest farm in Changing County of Fujian province building sub dam continuous planting （AA） , Chinese fir-Masson pine-fir（ABA） rotation and rotation of Chinese fir-Masson pine （AB） 3 by way of land as the research object, studied the soil physical properties of three kinds of forest regeneration patterns, varia- tion of organic matter. The results showed that the total nitrogen content and soil physical properties of different land use patterns, organic matter and total nitrogen were significantly different. The physical properties of different soil layers, uphill shows that Chinese fir-Masson pine-Chinese fir rotation under soil moisture conditions is better than Chinese fir even planted in the soil, and in the downhill slope and each layer, there is no obvious regularity; uphill and downhill from Chinese fir- Masson pine-Chinese fir rotation of soil organic matter and total nitrogen showed obvious regularity, and decreases with the increase of soil depth. However, different types of forest stand and different soil layers were different in different soil layers.