|Table of Contents|

Spring Leaf Phenological Comparison and Its Cause-effect Analysis of Ginkgo biloba in Urban and Suburban Areas of Shenyang City

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年09
Page:
82-89
Research Field:
Publishing date:

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Title:
Spring Leaf Phenological Comparison and Its Cause-effect Analysis of Ginkgo biloba in Urban and Suburban Areas of Shenyang City
Author(s):
WANG Yijing1; 2; XU Sheng1; 3; 4; HE Xingyuan1; 2; 3; 4; CHEN Wei1; 3; 4; LI Yan1; 4; QIN Ziqing5
(1.Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang,Liaoning 110016；2.College of Resources and Environment,University of Chinese Academy of Sciences,Beijing 100049；3.Key Laboratory of Forest Ecology and Management,Chinese Academy of Science,Shenyang,Liaoning 110016；4.Shenyang Arboretum,Chinese Academy of Sciences,Shenyang,Liaoning 110016；5.College of Life Science and Bioengineering,Shenyang University,Shenyang,Liaoning 110044)
Keywords:
phenology; Ginkgo biloba L.; leaf expansion rate; environmental factors
PACS:
-
DOI:
10.11937/bfyy.20191714
Abstract:
The common greening treespecies Ginkgo biloba L.in Shenyang was selected as the experimental objects,the leaf budding and unfolding phenology of G.bilobaduring spring in the areas of urban and suburban were observed and compared,the correlations between leaf expansion rate,tree height and diameter at breast height (DBH) of G.biloba,as well environmental factors (air temperature,relative humidity and ozone concentration) were analyzed in order to reveal the spring phenological variation difference and the main affecting factors of Ginkgo biloba L.in different areas of urban and suburban.The results showed that,1) The budding and leafing phenology of G.biloba.in the urban area were earlier than that in suburban；2) The larger the leaf area of G.biloba,the higher the mass per unit area,the earlier the budding and leafing phenology,and the faster the leaf expansion rate,in which G.biloba in the Youth park had the largest leaf area (22.21 cm2)in the same period and the highest leaf expansion rate (0.84 cm2·d-1),which was significantly higher than that in Shenyang Agricultural University and Liaoning Equipment College in the suburban (P<0.05)；3) The leaf expansion rate of G.biloba was significantly positively correlated with trees height,DBH and air temperature,respectively,while there was no significant correlation with relative humidity and ozone concentration.The findings showed that the environmental temperature,plant height and DBH were the main affecting factors on the leaf spring phenology.The results of this study were helpful to understandthe characteristics of response and adaptation in spring leaf phenology of G.biloba to regional climate change.

References:

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Last Update: 2020-07-23