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Structure and species composition of tree stands on verges and slopes along a major highway in Hong Kong

Journal of Forestry Research 2023年第5期34卷 1347-1358页

作者： Louis Shing Him Lee Hao Zhang kathy tze kwun ng Shun Cheong Lo Alan Siu Lun Yu Faculty of Design and Environment Technological and HigherEducation Institute of Hong KongHong KongPeople’s Republic of China Landscape Division Highways DepartmentHong KongPeople’s Republic of China Greening Landscape and Tree Management SectionDevelopment BureauHong KongPeople’s Republic of China

Arboricultural research focusing on transport land use was lacking in Hong *** highway slopes were registered in the Systematic Identification of Maintenance Responsibility of Slopes in the Territory(SIMAR),abbreviated as SIMAR *** aimed to analyze patterns in the structure and species composition of the tree stock along a highway in Hong Kong and examined how a slope registration system could help explain the characteristics of urban *** 53 slopes and 52 verges along San Tin Highway,Hong Kong were randomly *** trees on each slope and verge were collectively sampled as a tree *** variables,namely tree abundance,species richness,maximum tree height,Shannon-Wiener diversity,Simpson's dominance,and Pielou's evenness were measured for each *** addition,a limited visual tree risk assessment was *** 7,209 trees in 23 species were *** richness was low,ranging from one to eight species per *** and non-SIMAR slopes were *** slopes had significantly higher species richness,diversity,evenness but lower dominance,with mean difference of 1.41 species,0.17,0.17 *** slopes were associated with lower tree risk *** training regression models,boosting as an ensemble method arbitrarily raised the explanatory power and the predictive accuracy of some *** height,length,angle and area could be significant predictors of the biodiversity-related *** research can sample more habitat characteristics related to the structure and species composition of slopes and verges which were important components of urban forestry.

关键词： Highway greenery Roadside tree management Tree risk assessment Monospecific urban forest Slope geophysical environment Urban forests

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