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Plants are an essential factor for urban green planning to play the role of ecological service function. Along with many kinds of important positive ecological effects, plants in urban green planning also produce a wide variety of negative effects and shows many problems. Surveys and assessment studies on the negative effect indexes of plants in urban green planning and their importance are conducted in this study through studying on superlarge samples from the perspective of experts and the public. The result has shown that the important of these three indexes like "noxious, thorny or sick plants", "causing allergy", "broken and disorderly landscapes" are regarded as "important", while the importance of these three indexes like "hiding dangerous animals", "destructive extension of root system and branches", "withered branches and leaves influencing public health" are regarded as "normal". This research has positive inspiration and referential significance for performing the ecological service function of urban green planning better, directing the planning and construction of urban green planning and functional assessment better as well as promoting the green GDP measurement and the sustainable development of urban ecological environment.

Study on the Negative Effects of Plants in Urban Green Planning Based on the Experts and Public\'s View