哈尔滨太阳岛月亮湾景区土壤的理化性质

Soil physical and chemical properties on Moon Bay Scenic Area of Harbin Sun Island

以哈尔滨市太阳岛月亮湾景区内土壤为研究对象,分析开发建设对其理化性质的影响。结果表明:由于人为践踏压实,景区内土壤的通气性不好,持水量小,保水和保肥性差。土壤有机质含量处于2级水平,全氮含量处于4级水平,全磷含量最高处于5级水平。除乔木林地土壤的有机质含量基本正常外,土壤的有机质、全氮和全磷含量明显下降,均低于松花江地区土壤表层的平均含量,影响土壤的物理、化学和生物学活性,降低土壤的供氮能力和不断补充有效磷的可能性。各项指标的变异程度中等,相关性不十分显著。该研究为景区的生态研究、环境保护提供了依据。

This paper is an attempt to investigate the soil of Moon Bay Scenic Spot of Harbin Sun Island and analyze the influence of soil physical and chemical properties by development and construction. The study concludes that the soil suffers poor aeration, smaller water capacity, and poor water- holding or fetilizer retention capacity due to human trampling and compacting. The soil has content of organic matter of level 2, content of total nitrogen of level 4, and content of phosphorus of level 5 in the highest. Except the basically normal content of organic matter in arbor, the soil shows an obviously decline in organic matter, total nitrogen, and total phosphorus, leaving all these lower than the average content of topsoil in Songhua River Area and thus affecting soil physical, chemical and biological activi- ties and reducing the soil＇ s ability of supplying nitrogen and the possibility of constantly supplementing the effective phosphorus. Each index shows medium variation and gives little significant relevance. The study serves as the basis for ecological research and the environmental protection on scenic area.