Analysis on Growth Status of Introduced Zelkova serrata in Beijing
In order to understand the growth rhythm and ecological adaptability of Zelkova serrata in Beijing,the growth regularity,ecological adaptability and phenological dynamics of Zelkova serrata introduced from Qingdao in Shandong Province to Yanqing District and Fangshan dis-trict in Beijing were analyzed.The results showed as follows:the growth status of Zelkova serrata in Fangshan District was better than that in Yanqing District;the change of average monthly precipitation could easily change the growth rhythm of Zelkova serrata;the change of mean monthly temperature will affect the growth phenology of Zelkova serrata.In Yanqing District,the growth period was shorter than that in Fangshan District,the growth and development of the tree body was slower than that in Fangshan District.Meanwhile,the growth trend of the two regions was similar,the resistance to heat and cold of Zelkova serrata was obvious,and it was less affected by pests and diseases.
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