中山市五桂山海岸带迎背风坡土壤理化性质的比较

Comparative Analysis of Physical and Chemical Property of Soil in Coastal Windward and Leeward Slope in Wuguishan,Zhongshan

研究了五桂山造林4年后迎背风坡面土壤理化状况,以期了解海岸带迎风坡山地土壤退化情况。结果表明,迎背风坡面土壤物理性质差异不大;迎风坡有机质、硝态氮、盐分离子以及全钾离子的含量明显降低,土壤存在一定贫瘠、退化现象;迎风坡人工种植植被生长量、存活率等低于背风坡。所以,在海岸带退化生态系统的人工恢复过程中,应注意土壤和植被的协同恢复,选择适应迎风坡恶劣环境条件的抗性树种。

The study was conducted to survey the soil in the windward slop degenerated by comparative analysis about physicochemical properties of soil in windward slope and leeward slope.The results showed that physical and chemical properties of soil were similar in windward and leeward slope.The content of organic matter,nitrate-nitrogen,water soluble salt ions and total potassium dropped markedly in windward slope.To some extent,the soil in windward slope was poor and degenerated.The growth indexes of vegetation in windward slope were lower than that in leeward slope.Therefore,some suggestions were put up in the process of ecological restoration.Soil restoration and vegetation restoration should be synergistic.And the species which were resistant the rugged environment should be chosen.