| 摘要: |
| 城市绿地土壤是城市生态建设的基础，其质量和变
化趋势直接影响城市绿地生态和景观效应。以2002、2014和
2018年3次大规模的上海绿地土壤调查为基础，研究不同城市
绿地土壤肥力的变化特征，旨在为城市绿地土壤的养分管理提
供科学指导。结果表明：上海城市绿地土壤呈碱性，2002、
2014和2018年土壤pH平均值分别为8.36、8.20和7.79；
土壤速效养分(N、P、K)充足，3次取样均达到绿化种植土标
准；土壤通气孔隙度较小，3次取样均小于绿化种植土标准阈
值(5%)。从时间变化趋势上看，上海城市绿地土壤pH值在
逐渐降低，土壤有机质含量在逐渐提高，土壤肥力综合指数也
在逐渐提升；但土壤物理性质逐渐退化，容重逐渐增加，通气
孔隙度逐渐变小。不同类型绿地间土壤肥力的变化趋势基本一
致，其中受人为活动影响剧烈的附属道路绿地土壤容重和通气
孔隙度自2002年起严重退化，与2018年无显著差异。 |
| 关键词: 风景园林 城市绿地 土壤化学性质 土壤物理
性质 土壤综合肥力 |
| DOI： |
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| 基金项目: |
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| Analysis on the Change of Soil Fertility in ShanghaiUrban Green Space |
| MA Xiang,ZHANG Lang,HUANG Shaomin,ZHANG Qi,HAN Jigang |
| Abstract: |
| The soil of urban green space is the foundation of urban
ecological construction, and its quality and change trend directly
affect the ecological and landscape effect of urban green space.
Based on three large-scale surveys of green land soil in Shanghai in
2002, 2014 and 2018, the changes of nutrients and comprehensive
fertility of different green space soil were analyzed, in order to
provide scientific guidance for nutrient management of urban green
space soil. The results showed that the soil of urban green space
in Shanghai was alkaline, and the average soil pH value in 2002,
2014 and 2018 were 8.36, 8.20 and 7.79, respectively. The soil
available nutrients (N, P, and K) were sufficient. The soil porosity
was small, and the three samples were lower than the standard
threshold of green planting soil (5%). From the point of view
of time change trend, the soil pH value of urban green space in
Shanghai is gradually decreasing, the content of soil organic matter
is increasing gradually, and the comprehensive index of soil fertility
is also increasing gradually. However, the physical properties of
green space soil degrade gradually, the bulk density of soil increases
gradually, and the porosity of soil decreases gradually. Between
different types of green space, the change trend of soil fertility is
basically the same. The soil of road was severely affected by human
activities, and the soil bulk density and porosity had seriously
degraded since 2002, which was not significantly different from that
in 2018. |
| Key words: landscape architecture urban green space soil chemical
property soil physical property soil comprehensive fertility |
