| 摘要: |
| 以上海典型搬迁地土壤为研究对象，通过野外调
查，分析了搬迁地土壤理化特性、障碍因子及其障碍程度，探
讨了不同搬迁地类型土壤特征差异。结果表明：上海搬迁地
土壤容重大，均值为1.42Mg/m3
，土壤压实严重；土壤非毛
管孔隙度小，均值仅为3.31%，土壤通气性差；土壤持水能
力和入渗能力均较弱，田间持水量均值为320.88g/kg，入渗
率中位数仅为1.05mm/h；土壤pH值均值高达8.78，为碱
性或强碱性；土壤EC值均值为0.15mS/cm，可溶性养分缺
乏；土壤有机质含量偏低，均值为15.53g/kg；土壤水解性
氮含量低，但有效磷和速效钾含量较丰富。不同搬迁地类型的
土壤特性存在差异性，但城中村搬迁地土壤质量明显优于工企
业搬迁地，尤其是土壤容重、饱和持水量、田间持水量及水解
性氮(p＜0.05)。搬迁地土壤质量的障碍因子及障碍程度顺
序为：土壤物理指标＞土壤养分指标＞土壤化学指标。 |
| 关键词: 风景园林 搬迁地 土壤质量 障碍因子 主成分
分析 |
| DOI： |
|
| 基金项目: |
|
| Study on Soil Quality Characteristics and Greening Obstacle Factors of Typical Urban Relocation Sites |
| LIANG Jing,WU Haibing,ZHANG Lang |
| Abstract: |
| Taking soils of typical relocation sites in Shanghai as the
study object, through field investigations, soil physical and chemical
properties, obstacle factors and their degree of obstacles of the
relocation sites were analyzed, and the differences in soil characteristics
of different relocation sites were discussed. The results showed that soil
bulk density was large, with an average value of 1.42Mg/m3
, and soil
compaction was serious; soil non-capillary porosity was small, with
an average value of only 3.31%, and soil aeration was poor; soil water
holding capacity and infiltration capacity were both weak. The average
field water capacity was 320.88g/kg, and the median infiltration rate
was only 1.05mm/h. The average pH was 8.78, which was alkaline
or strongly alkaline. The average EC value was 0.15mS/cm, lack of
soluble nutrients; soil organic matter was low, with an average value
of 15.53g/kg; soil hydrolysable nitrogen was low, but the content of
available phosphorus and rapidly available potassium was rich. There
were differences in the soil properties of different types of relocation
sites, but the soil quality of the relocation sites of urban villages was
significantly better than that of industrial and enterprise relocation sites,
especially the soil bulk density, saturation water-holding capacity, field
water capacity and hydrolysable nitrogen were significantly better than
that of industrial and enterprise relocation sites (p＜0.05). The order of
obstacle factors and obstacle degree of soil quality in the relocation site
was: soil physical index > soil nutrient index > soil chemical index. |
| Key words: landscape architecture relocation site soil quality obstacle factor principal component analysis |
