Journal of East China Normal University(Natural Sc ›› 2011, Vol. 2011 ›› Issue (4): 15-23.

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Diversity,spatial pattern and dynamics of vegetation under urbanization in Shanghai(Ⅶ): Dynamics and a better construction method of the near-natural forest in Pudong of Shanghai for recent ten years

DA Liang-Jun 1-3, YANG Jue 1, HUO Xiao-li 1   

  1. 1. Department of Environment Science,East China Normal University, Shanghai 200062, China;
    2. Shanghai Key Laboratory for Ecology of Urbanization process and Eco-restoration, Shanghai 200062, China;
    3. Tiantong National Station of Forest Ecosystem, Ningbo Zhejiang 315114, China
  • Received:2010-07-01 Revised:2010-10-01 Online:2011-07-05 Published:2011-11-12

Abstract: The near-natural forest was constructed in Pudong New Area of Shanghai in 2000. The study was made by tracking investigation on species composition of communities, plant density, plant height, DBH and soil nutrient. Results showed that: After ten years, forests showed a good growth. Species of plants maintained almost unchanged except for small amount of invasive species. However, due to the lack of shade, the mortality of evergreen tree species such as Castanopsis sclerophylla, Machilus thunbergii etc. was high at the first stage of construction. While Ligustrum lucidum and Liquidambar formosana showed a rapid growth and low mortality, gradually dominating the upper stratum, indicating deciduous broadleaved species gradually found their feet and showed up a more stable growth, with soil fertility rising more steadily than that in the early planting period. In response to the problems we found above, a planting model, the bi-synusia model of deciduous and evergreen trees of uneven aged, are put forward, which might play a guidance and reference role in building near-natural urban forests.

Key words: near-natural forest, the bi-synusia model of deciduous and evergreen trees in different ages, ecological greening

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