Distribution Characteristics of Soil Aggregates in Urban Relocation Sites of Shanghai City

Liang Jing; Wu Haibing; Zhang Lang

doi:10.13961/j.cnki.stbctb.2022.02.009

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Distribution Characteristics of Soil Aggregates in Urban Relocation Sites of Shanghai City

- Distribution Characteristics of Soil Aggregates in Urban Relocation Sites of Shanghai City
- Bulletin of Soiland Water Conservation Vol. 42, Issue 2, Pages: 59-66(2022)
- 作者机构：
  
  1. 上海市园林科学规划研究院,上海,200232
  2. 上海城市困难立地绿化工程技术研究中心,上海,200232
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2022.02.009
  CLC： S152.5;S152.7
- Published：2022
- 稿件说明：
移动端阅览
Liang Jing, Wu Haibing, Zhang Lang. Distribution Characteristics of Soil Aggregates in Urban Relocation Sites of Shanghai City[J]. Bulletin of Soiland Water Conservation, 2022, 42(2): 59-66.
DOI：

Liang Jing, Wu Haibing, Zhang Lang. Distribution Characteristics of Soil Aggregates in Urban Relocation Sites of Shanghai City[J]. Bulletin of Soiland Water Conservation, 2022, 42(2): 59-66. DOI： 10.13961/j.cnki.stbctb.2022.02.009.

摘要

[目的] 分析城市典型搬迁地土壤团聚体的分布特征，为搬迁地土壤绿化种植提供技术支撑。[方法] 以上海市城中村和工企业两种典型搬迁地土壤为研究对象，采集27个典型搬迁地土样，采用干筛和湿筛法分别测定搬迁地土壤非水稳性团聚体和水稳性团聚体，分析了上海搬迁地土壤团聚体分布特性，通过单因素方差法分析了不同搬迁地土壤团聚体的差异性，并对土壤团聚体与土壤基本理化性质进行了相关性分析。[结果] 上海搬迁地土壤非水稳性团聚体以粒径≥2.0 mm的大团聚体为主，所占比例达64.9%；土壤水稳性团聚体以粒径＜0.106 mm的微团聚体为主，所占比例高达73.4%；土壤团聚体破坏率大，为79.8%。城中村搬迁地土壤非水稳性团粒结构体(粒径≥0.25 mm)显著高于工企业搬迁地(p＜0.05)，但水稳性团粒结构体差异不明显；工企业搬迁地土壤团聚体破坏率显著高于城中村搬迁地(p＜0.05)。土壤团聚体破坏率与土壤容重呈极显著正相关性，与土壤田间持水量、总孔隙度及有机质则呈极显著负相关性(p＜0.01)。[结论] 上海市搬迁地土壤团粒结构体差，团聚体破坏率高，但城中村土壤团粒结构体及稳定性优于工企业搬迁地。搬迁地土壤团聚体破坏率主要受土壤容重、田间持水量、总孔隙度及有机质等因子影响。

Abstract

[Objective] The distribution characteristics of soil aggregates in typical relocation sites of Shanghai City were analyzed in order to provide technical support for soil afforestation in relocation sites. [Methods] Taking the soils of two typical relocation sites at urban villages and industrial enterprises as the research objects

27 soil samples of typical relocation sites were collected

and dry-sieving and wet-sieving methods were used to determine soil non-water stable aggregates and water stable aggregates

respectively. And the distribution characteristics of soil aggregates in relocation sites were analyzed through single-factor analysis of variance. The differences of soil aggregates in different relocation sites were analyzed

and the correlations between soil aggregates and the basic physical and chemical properties of soil were analyzed. [Results] The soil non-water stable aggregates were mainly large aggregates with particle size ≥2.0 mm

accounting for 64.9%. Soil water-stable aggregates were dominated by micro-aggregates with particle size ＜ 0.106 mm

accounting for 73.4%. The destruction rate of soil aggregates was 79.8%. Soil non-water stable aggregates (particle size ≥0.25 mm) in the relocation site of urban village were significantly higher than that in the relocation site of industrial enterprises (p＜0.05)

but there was no significant difference in water-stable aggregates. The soil aggregate damage rate of industrial enterprises was significantly higher than that in the relocation sites of urban villages (p＜0.05). The soil aggregate damage rate was significantly positively correlated with soil bulk density

while significantly negatively correlated with soil field capacity

total porosity and organic matter (p＜0.01). [Conclusion] The overall soil aggregate structure in the relocation site of the Shanghai City is poor

and the soil aggregate damage rate is high

but the soil aggregate structure and stability of the urban village is better than that of the industrial enterprises. The soil aggregate damage rate is mainly affected by soil bulk density

field capacity

total porosity and organic matter.

关键词

Keywords

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