鸡西市柳毛石墨矿废弃地植物多样性研究

Study on the Plant Diversity of Liumao Remains of Graphite Mine in Jixi City

采用样方调查的方法,从不同环境梯度上土壤物理性质的变化特征和植被的群落学特征等方面对石墨尾矿废弃地植被的恢复情况进行研究。结果表明,土壤性质随着废弃地废弃年限的增加有所改善,且人工种植沙棘对于改善当地土壤的物理性质有较好的作用。对于灌木和草本植物来说,随着废弃地废弃年限的增加,物种多样性指数总体上表现出逐渐增大的趋势;其相似性系数逐渐减小,但在所有两个邻近的环境梯度间,其草本层间的相似性系数都处在较高的水平上。

Using the method of sample plots investigation, the restoration condition of vegetation was studied from the aspects of the soil physical properties at various environmental gradients and community characteristics in the remains of graphite mine. The results showed that with the increase of abandoned years of the remains of graphite mine, soil quality had been improved, and artificially planting seabuckthorn had preferable effects to improve the physical properties of soils. For the herbaceous plant and the shrubs, with the increase of abandoned years of the abandoned area, species diversity indexes presented the trend of generally in- creased, and comparability coefficient decreased gradually respectively. But between all of the two adjacent environmental gradients, comparability coefficients between herbaceous layers were kept at at higher level.