Comprehensive Evaluation Of Adaptability And Ornamental Properties Of Six Foliage Tree Species Under Simulated Calcareous Soil Conditions

This article uses normal understory soil and calcareous soil to plant six foliage tree species,and observes their related growth and development indicators,such as growth,biomass,photosynthetic parameters,and related pigment content.At the same time,principal component analysis A comprehensive analysis of these indicators aims to understand the foliage tree species suitable for growth in calcareous soil.The main results are as follows:1.Calcareous soil can provide a normal growth environment for foliage trees.Although the growth and biomass of pentagonal maple,American red maple,torch tree,beech tree,and Japanese maple in calcareous soil are slightly lower than normal soil,the difference is not significant.It shows that these six landscape tree species have strong adaptability in calcareous soil,and their growth in normal soil is not much different.2.Torch tree and Acer tea are more adaptable in calcareous soil,and there is no significant difference in photosynthetic parameters.However,the photosynthetic parameters of maple,Acer palmatum,American red maple,and zelkova in alkaline soil have decreased to a certain extent compared with normal soil conditions.The chlorophyll content and anthocyanin content of torch tree,Acer tea,pentagonal maple,and zelkova trees have no significant changes under calcareous soil conditions,and they have good adaptability to calcareous soil.Calcareous soil is slightly less adaptable.3.Five-cornered maple,Acer tea,zelkova and palmatum can complete the color change process under alkaline soil conditions,but their colors are not gorgeous enough,which affects the ornamental value.The torch tree is more adaptable and still exhibits gorgeous colors,giving people a bright feeling.Moreover,the discoloration degree of torch tree in calcareous soil is not much different from that in normal soil.4.Comprehensively evaluate the adaptability of the six foliage tree species in calcareous soil by principal component analysis,and rank them in the order of theiradaptability: torch tree >Acer tea> pentagonal maple >zelkova>chicken feet Maple>American Red Maple.Conclusion: Torch tree has good adaptability in calcareous soil.Under the premise of reasonable planting,it is recommended to plant more torch tree in calcareous soil area.The adaptability of maple tea strips and maple pentagram is also good,and can be planted with torch trees to increase landscape diversity.The adaptability of Zelkova and Acer palmatum is more general.It can be grown in areas with relatively low calcium carbonate content.It is not recommended to grow American red maple in calcareous areas,as its color is not bright enough in calcareous soil.The research and selection of suitable tree species in calcareous soil is not only conducive to improving and using calcareous soil,but also preventing vegetation degradation in calcareous soil areas,and is conducive to promoting vegetation biodiversity in calcareous areas.The improvement of the ecological environment in limestone areas has important guiding significance.