Current Research and Prospects on Influencing Factors of Root Growth and Soil Physicochemical Properties of Woody Plants in Urban Green Space
Plant roots are one of the primary nutrient organs in higher plants.They play a significant role in sup-porting the plant,facilitating transportation,absorbing water and nutrients and serve as a crucial indicator of plant differentiation.The relationship between plant roots and plant metabolism,physicochemical properties of the growth medium,biological composition of the medium,and biodiversity is closely intertwined.With the ongoing process of urbanization,the increasing expansion of impervious surfaces in urban areas and the construction and redevelopment of surface and underground infrastructure restrict the urban ecosystem.Major limitations include high surface soil bulk density,low porosity,the presence of numerous base materials and foreign objects,and het-erogeneous spatial distribution of organic matter and other nutritional elements.These conditions prompt adaptive responses in the configuration of urban plant root systems under environmental stress,leading to potential damage to urban infrastructure and the risk of plant overturning.It is recommended to develop detection methods and in-struments specifically designed for the extensive root systems of urban woody plants.Establishing predictive models for the root system configuration and distribution of various tree species can be applied to urban green space selection,green space renovation,tree transplantation,and other practical applications.Coupling the above-ground and underground parts of trees,revealing their interconnections,and understanding the morphological and physiological responses of tree organs will contribute to refining assessment systems for various urban trees.
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