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梅州市科技计划项目(2007B85)

作品数:3 被引量:31H指数:2
相关作者:刘德良更多>>
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梅州市城区行道树的结构特征被引量:28
2009年
采用抽样调查方法对梅州市城区20条主要道路的行道树进行调查,分析梅州城区行道树的组成特征、结构特征,探讨多样性指数和物种重要值。结果表明:1)梅州城区行道树共有13科18属23种7133株,其平均胸径、平均冠幅、平均树高分别为27.59cm,4.10m,6.94m,总体上看,平均冠幅偏小;2)物种丰富度指数S、Shannon-Wiener指数H和Simpson指数D偏小且各道路间差异明显,说明各道路行道树存在一定程度的物种单一性、层次的单调性;3)梅州市城区行道树优势树种是大叶榕、垂榕、大王椰子,次优势种为海南榄仁、阿珍榄仁、阴香,它们是梅州城市街道绿化的好树种。基于南亚热带植物区系的特点,提出了梅州城区行道树的骨干树种、一般树种、试用树种名单,共计50种。
刘德良
关键词:行道树结构特征
从生态思想论城市林业的发展被引量:2
2008年
由于城市林业的产生、形成、发展是人类文明史上生态思想产生发展的必然结果,为此本文按生态自发、生态失落、生态觉醒、生态自觉4个发展阶段,并试图从时代背景、自然空间与人工空间的关系、代表性理论等方面来揭示城市林业的发生发展规律、窥探城市林业的未来发展趋势。
刘德良
关键词:城市林业人类社会生态思想
梅州城区公园绿地景观格局分析被引量:1
2009年
The park landscape pattern in Meizhou was analyzed by using the landscape ecological principles and methods.The results showed that the distribution and structure of the parks in Meizhou were not much reasonable.From the viewpoint of the areas of green space,the area of the city parks and district parks accounted for 89.97% of the total while the other green spaces accounted for only 10.03%.The heterogeneity indexes of city parks and district parks were much higher than that of the other green spaces,and the fragmentation indexes from high to low were in the order of roadside green space,community parks,squares,linear parks,city parks and district parks.From the viewpoint of distance index,the gregariousness of patch landscape at new-built town and northern bank of Meijiang River was more obvious than that at southern bank of the river. As to dimensional index,that of the 5 kinds of green spaces in Meizhou city was low(<1.25),with the city parks and district parks the highest(1.236 8) and the square the lowest(1.047 2).To improve the landscape pattern of city green spaces and the environment in Meizhou,focus should be put on the construction of community green spaces,square green spaces,and linear parks by well allocating all kinds of parks and green spaces and avoiding reunion distribution,as well as paying attention on landscape diversity and fractal dimension.
刘德良
关键词:公园绿地
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