Diversity, spatial pattern and dynamics of vegetation under urbanization in Shanghai(Ⅶ):Dynamics and a better construction method of the nearnatural forest in Pudong of Shanghai for recent ten years
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.
near-natural forestthe bi-synusia model of deciduous and evergreen trees in dif-ferent agesecological greening
国家科技期刊平台
NSTL
万方数据
维普
