Community characteristics and soil nutrients in different green space types of Zhuji City, Zhejiang
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摘要: 为诸暨以及气候类型相近城市的绿地规划和植物多样性建设提供科学依据，以浙江省诸暨市区为对象，研究了诸暨城市绿地的植物多样性、群落结构及土壤养分。结果表明：研究区域共记录树种51科100属170种，乡土树种49科88属107种，占总种数的62.94%。总体来看，乔木树种中樟树Cinnamomum camphora出现频率较高，灌木树种中海桐Pittosporum tobira和山茶Camellia japonica出现频率较高。自然片林与其他3种城市绿地相似性总体较低，但灌木树种相似性明显较高。不同城市绿地树种多样性并无显著性差异，Shannon-Wiener指数和Simpsons指数基本呈现出相同的变化规律, Shannon-Wiener指数排名是：公园绿地（1.46）＞居住区绿地（1.45）＞自然片林（1.37）＞单位附属绿地（1.29）；Simpsons指数排名是：居住区绿地（0.67）＞公园绿地（0.66）＞单位附属绿地（0.60）＞自然片林（0.58）。就群落结构来看，自然片林树种最密，平均胸径最小，导致林下灌木较少，公园绿地应用高大乔木使密度最低，平均胸径最大。土壤有机质最高的是自然片林，其次依次为单位附属绿地、公园绿地、居住区绿地。因此，今后在城市绿化中应加大对优良乡土树种的利用，增加灌木树种的种类和数量，并针对性进行施肥管理。图1表9参25Abstract: To provide a scientific basis of green space planning and construction of the plant diversity for Zhuji and other cities which in similar climate type, plant diversity, community structure, and soil nutrients were studied in four types of urban green space: parkland, residential green space, natural woodlots, and Accessory greenbelt, of Zhuji City, Zhejiang Province. Analysis included use of the Shannon-Wiener and Simpson's indexes. Results showed that the study area included species from 51 families of 100 genera and 170 species; indigenous tree species from 49 families with 88 genera and 107 species accounted for 62.94% of the total species. Tree species revealed a greater number of Cinnamomum camphora; shrub species were predominantly Pittosporum tobira and Camellia. Compared to the three other kinds of urban green space, natural woodlots had the lowest similarity, but similarity with shrub species was much higher. No differences in tree species diversity among the four types of urban green spaces were found; the Shannon-Wiener index and Simpsons index were about the same: a ranking for Shannon-Wiener diversity was parkland （1.46）＞residential green space （1.45）＞natural woodlots （1.37）＞work-unit attached green space （1.29）; whereas, the ranking for Simpsons index was residential green space （0.67）＞parkland （0.66）＞work-unit attached green space （0.60）＞natural woodlots （0.58）. For community structure, tree species in natural woodlots were densest with a smaller average DBH resulting in fewer understory shrubs; tall trees in parklands contributed to the lowest density and the greatest average DBH. The highest content of organic matter was in natural woodlots followed by the Accessory greenbelt, parkland, and residential green space. Therefore, urban green space should increase the use of fine native species and the variety and number of shrub species, and fertilization management specifically in the future.［Ch, 1 fig. 9 tab. 25 ref.］
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https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2015.04.007
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