上海植物园典型植物群落的土壤肥力特性探讨

以城市绿地微缩景观的上海市植物园为研究对象,在调查典型植物群落土壤物理化学性质、养分的基础上,还分析了其土壤的微生物特性.研究结果表明,对于城市绿地土壤而言,上层土壤有机质、碱解N、速效K、有效P的含量均比下层高,但土壤理化性质和养分与土壤微生物特性(微生物数量、微生物量碳、微生物量氮、酶活性等)之间并不具有较好的相关性.分析其原因,可能一方面与其自肥作用有关,另一方面可能由于管理方式不同所引起的.

Discuss on Soil Fertility in the Typical Plant Communities in Shanghai Botanical Garden

Shanghai Botanical Garden could be regarded as a miniature of urban green space, and the physicochemical properties, fertility and microbial characteristics of the soils sampled from the typical plant communities in the garden were studied. As fas as the urban green soils were concerned, the results showed that the contents of organic matters, available nitrogen, available phosphorus and available potassium in the upper soils were higher than that in the lower ones, and there was no clear relationship betwe...