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首页> 外文期刊>Pakistan journal of botany >Spatial patterns of vegetation with underlying soil properties prevailing along drain side areas in Islamabad City
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Spatial patterns of vegetation with underlying soil properties prevailing along drain side areas in Islamabad City

机译：伊斯兰堡市沿排水带主要土壤属性的植被空间格局

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Present study was conducted in Islamabad one of the rapidly growing city of Pakistan the andaimed to identify vegetation communities prevailing along drain sides and their relationship to theunderlying soil properties. A total of 186 quadrats were recorded which covered the whole stretchof drains passing throughout the city. A total of 18 edaphic properties were determined in acidextractable surface soils of each quadrat. Two way indicator species analysis (TWINSPAN)identified two major communities (Broussonetia-Populus and Panicum-Conyzanthes communitytypes). Amongst weeds, species such as Cynodon dactylon, Malvestrum coromendilianum andParthenium hysterophorus were more frequent. Detrended Correspondence Analysis (DCA)identified environmental gradients to vegetation distribution. First ordination axis demonstratedhierarchical vegetation gradient shift of species from trees to herbs due to transformation of landfrom open to constructed land whereas, second axis highlighted the influence of invasive species.The distribution pattern of vegetation influenced by soil physico-chemical properties wasdemonstrated by Canonical Correspondence Analysis (CCA) which explained a total of 11.25%variance. The results conclude that human disturbance has affected environmentally designedvegetation patterns. It is therefore necessary to take into account trends like human influence, landabandonment and land use for the maintenance and conservation of vegetation.
机译：目前的研究是在伊斯兰堡（巴基斯坦快速发展的城市之一）进行的，旨在确定沿流域盛行的植被群落及其与土壤基础的关系。总共记录了186平方英里，覆盖了贯穿整个城市的整个排水沟。在每个正交方的可酸萃取的表层土壤中共测定了18种依德性。双向指示剂物种分析（TWINSPAN）确定了两个主要群落（Broussonetia-Populus和Panicum-Conyzanthes群落类型）。在杂草中，诸如犬齿Cy，马氏马尔默氏菌和百日咳百日咳等物种更为常见。去趋势对应分析（DCA）确定了植被分布的环境梯度。第一个排序轴显示了由于土地从开阔地转变为建设用地而导致的物种从树种到草本植物的分层植被梯度变化，而第二个坐标轴则突出了入侵物种的影响。通过典范对应分析论证了土壤理化性质对植被分布的影响（CCA）解释了总共11.25％的差异。结果表明，人为干扰已经影响了环境设计的植被模式。因此，有必要考虑到诸如人类影响，土地遗弃和土地使用等趋势来维护和保护植被。

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