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首页> 外文期刊>Landscape and Urban Planning >The role of the residential urban forest in regulating throughfall: a case study in Raleigh, North Carolina, USA.
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The role of the residential urban forest in regulating throughfall: a case study in Raleigh, North Carolina, USA.

机译：居住城市森林在调节穿透力中的作用：以美国北卡罗来纳州罗利市为例。

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Overwhelming stormwater volumes, associated with deteriorating water quality and severe flooding in urbanizing cities, have become a great environmental and financial concern globally. Urban forests are capable of reducing the amount of stormwater runoff, in part, by regulating throughfall via canopy rainfall interception; however, the lack of stand-scale studies of urban throughfall hinders realistic estimates of the benefits of urban vegetation for stormwater regulation. Furthermore, urban forest characteristics that may be influencing rainfall interception are difficult to establish as these environments are extremely heterogeneous and managed, to a large extent, by private residents with varying landscape preferences. To quantify the amount of rainfall interception by vegetation in a residential urban forest we measured throughfall in Raleigh, NC, USA between July and November 2010. We analyzed 16 residential yards with varying vegetation structure to evaluate the relative importance of different descriptive measures of vegetation in influencing throughfall in an urban watershed. Throughfall comprised 78.1-88.9% of gross precipitation, indicating 9.1-21.4% rainfall interception. Canopy cover (p<0.0001) and coniferous trees (p=0.017) were the most influential vegetation variables explaining throughfall whereas variables such as leaf area index were not found significant in our models. Throughfall and vegetation characteristics varied significantly among yards (p<0.0001), between front and back yards (p<0.0001), and between rented and privately-owned yards (p=0.001), suggesting a potentially significant role in stormwater regulation for urban residents.Digital Object Identifier http://dx.doi.org/10.1016/j.landurbplan.2013.07.002
机译：洪水泛滥，与城市化城市水质恶化和严重洪灾有关，已成为全球范围内对环境和经济的重大关切。城市森林有能力减少雨水径流，部分原因是通过遮雨来调节降雨径流;然而，缺乏对城市穿透力的常规研究阻碍了对城市植被对雨水调节的益处的现实估计。此外，很难建立可能影响降雨截留的城市森林特征，因为这些环境极为不同，并且在很大程度上由具有不同景观偏好的私人居民管理。为了量化居住城市森林中植被拦截的降雨量，我们测量了2010年7月至11月在美国北卡罗来纳州罗利市的穿透降雨。我们分析了16个植被结构不同的居住院子，以评估不同描述性植被措施的相对重要性。影响城市流域的通透性。降水量占总降水量的78.1-88.9％，表明拦截了9.1-21.4％的降雨。冠层覆盖（p <0.0001）和针叶树（p = 0.017）是影响穿透力的最具影响力的植被变量，而在我们的模型中未发现叶面积指数等变量。院子之间（p <0.0001），前后院之间（p <0.0001）以及租用和私有院子之间（p = 0.001）的穿透力和植被特征差异显着，表明在城市居民的雨水调节中可能发挥重要作用。数字对象标识符http://dx.doi.org/10.1016/j.landurbplan.2013.07.002

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