JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2015, Vol. 39 ›› Issue (03): 71-77.doi: 10.3969/j.issn.1000-2006.2015.03.014

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Soil quality comprehensive assessment of different plant communities in Shanghai green belt

ZHANG Kaixuan1, SHANG Kankan2, DA Liangjun3*   

  1. 1. Department of Tourism and Food, Shanghai Business College, Shanghai 201400, China;
    2. Shanghai Chenshan Botanical Garden, Shanghai 201602, China;
    3. Shanghai Key Laboratory for Ecology of Urbanization Process and Eco-restoration, College of Ecological and Environmental Sciences, East China Normal University, Shanghai 200062,China
  • Online:2015-05-30 Published:2015-05-30

Abstract: To explore the soil improvement service of plant communities, and provide a scientific basis for urban forest planning and management, soil samples were collected from seven plant communities in Shanghai green belt with bare lands as the control. Eight soil physical and chemical indicators were measured in different soil depth, including soil bulk density, capillary porosity, total porosity, organic matter, total N, total P, NH+4-N and NO-3-N. Principal component analysis was used to assess the comprehensive soil quality based on those indicators. Results showed that soil improvements were mainly on the surface of soil(0-20 cm), with different soil improvement effects of each plant communities. Deciduous broad leaved forest with Platanus×hispanica as dominate species and deciduous coniferous forest with Taxodium distichum var. imbricarium as dominate species had the greatest improvement effect, deciduous broad-leaved forest with Koelreuteria bipinnata var. integrifoliola as dominate species had the least improvement effect, and the other communities were in the middle level. Lower-intense-management was helpful to litter layer accumulating, and facilitate the recruitment of understory seedlings and herbs, which could contribute to the overall improvement of soil quality.

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