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通过对宝钢厂区4种不同污染程度区内,不同林分和不同树种下土壤0～20cm、20～40cm基本理化性质和有机碳含量的测定,分析城市工业环境下林地土壤有机碳含量的特征,以实现合理的绿化布局,提高绿地减碳效益。结果表明:工业区林地土壤有机碳具有“表聚作用”;清洁区内落叶阔叶林土壤有机碳含量高,建议多种柳树;轻度污染区内针阔混交林含量高,针阔混交后土壤有机碳含量明显高于针叶林和常绿阔叶林,建议多种雪松+广玉兰和雪松+香樟;中度污染区和严重污染区内常绿阔叶林有机碳含量高,建议分别多种蚊母和女贞,同时严重污染区应丰富植被类型。
Through the determination of 0 ~ 20cm, 20 ~ 40cm soil physical and chemical properties and soil organic carbon content in four different soil polluted areas, different stands and different tree species in Baosteel Planting Area, the characteristics of soil organic carbon content in urban forest under industrial environment were analyzed. In order to achieve a reasonable green layout, improve carbon reduction efficiency of green space. The results showed that the soil organic carbon in the forest land of industrial area had “table aggregation effect ”; the content of soil organic carbon in the deciduous broad-leaved forest in the clean area was high, suggesting a variety of willow trees; After mixing, soil organic carbon content was significantly higher than coniferous and evergreen broad-leaved forests, suggesting a variety of Cedrus + Magnolia grandiflora and cedar + camphor; moderately-polluted areas and evergreen broad-leaved forest in heavily polluted areas with high organic carbon , Suggesting that a variety of mosquito and privet, respectively, while heavily polluted areas should be rich in vegetation types.