GEOGRAPHICAL RESEARCH ›› 2018, Vol. 37 ›› Issue (12): 2420-2432.doi: 10.11821/dlyj201812005

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Responses of variations of plant ornamental period to climate change in the west suburbs of Beijing from 1965-2014

Xinyue GAO1,2(), Junhu DAI1(), Mingqing ZHANG2   

  1. 1. Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China
    2. College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China
  • Received:2018-06-29 Revised:2018-09-11 Online:2018-12-20 Published:2018-12-24
  • About author:

    Author: Shi Zhenqin (1988-), PhD, specialized in regional development and land space management in mountain areas. E-mail: kevinszq@163.com

    *Corresponding author: Deng Wei (1957-), Professor, specialized in mountain environment and regional development.

    E-mail: dengwei@imde.ac.cn

Abstract:

Based on the phenological data of 50 plant species and the mean daily temperature data from 1965 to 2014, we analyzed the trend, the change patterns, and their response to climate change of ornamental period of leaf greenness, flowering, and leaf coloring and falling (beginning date, end date, and duration), respectively, by applying correlation and regression analysis methods. The results showed that: (1) For all the 50 plant species, the ornamental period of leaf greenness, flowering, and leaf coloring and falling was from April 14 to October 15, April 29 to May 17, October 15 to November 14, respectively. The duration ranged from 163 to 219 days for leaf greenness ornamental period, 6 to 77 days for flowering, 16 to 41 days for leaf coloring and falling. (2) During the study period, the beginning date exhibited an advancing trend of 3.1 days decade-1 for leaf greenness ornamental activities and 1.6 days decade-1 for flowering ornamental activities, respectively, but a delaying trend of 3.6 days decade-1 for leaf coloring and falling ornamental activities. The end date exhibited a delaying trend of 3.6 days decade-1 for leaf greenness ornamental activities and 1.1 days decade-1 for leaf coloring and falling ornamental activities, respectively, but advancing trend of 0.5 days decade-1 for flowering ornamental activities. The duration has extended by 6.8 days decade-1 for leaf greenness ornamental period and 1.2 days decade-1 for flowering ornamental periods, respectively, but shortened by 2.5 days decade-1 for leaf coloring and falling. (3) The extending leaf greenness ornamental period was caused by an earlier beginning date and a later end date. The extending flowering ornamental period was induced by a much earlier beginning date and a less earlier end date. The extending and shortening forms of flowering ornamental period of spring flowering plants were consistent with those of summer flowering plants. The shortening leaf coloring and falling ornamental period was induced by a much later beginning date and a less later end date. (4) The beginning date of ornamental periods of leaf greenness, the beginning and end dates of flowering ornamental period advanced by 3.9 days, 3.4 says and 1.9 days °C-1 in spring, respectively. However, the end date of ornamental period of leaf greenness delayed by 5.2 days °C-1 in spring. The beginning and end dates of ornamental period of leaf coloring and leaf falling delayed by 5.2 days and 2.2 days 1°C-1 in autumn. (5) By combining different phenophases, we identified landscape patterns with different colors and styles, and designed different landscape themes accordingly. Therefore, the study of changes of plant phenology provides a reference for both the innovative design of landscape and the arrangement of plant ornamental vacation.

Key words: climate change, phenological response, plant ornamental vacation, Beijing