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Chinese Journal of Applied Ecology ›› 2018, Vol. 29 ›› Issue (7): 2362-2372.doi: 10.13287/j.1001-9332.201807.039

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Dynamic response and variance of vegetation in China from 1982 to 2015 under the asymmetric rate of temperature fluctuation.

PANG Bo1, ZHANG Peng-yan1*, LU Cheng-peng2, HE Jian-jian1, CEN Yun-feng1, YAN Yu-hang1, YANG Xiao-jie1   

  1. 1College of Environment and Planning/Institute of Sustainable Development in Agriculture and Rural Area, Henan University, Kaifeng 475004, Henan, China;
    2Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
  • Received:2018-04-02 Online:2018-07-18 Published:2018-07-18
  • Contact: *E-mail: pengyanzh@126.com
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (41601175), the Key Scientific Research Project of Henan Province (16A610001), the Foundation and Advanced Technology Research Plan of Henan Province (152300410067), and the University Science and Technology Innovation Team Support Plan of Henan Province (16IRTSTHN012).

Abstract: The impact of global warming on the growth and development of natural vegetation is an important concern worldwide. Based on the data from the vegetation normalization index, daytime temperature (Tmax), nighttime temperature (Tmin), precipitation, and elevation from 1982 to 2015, we examined the day-night warming response of 42 types of natural vegetation in China. The results showed that both the temperature at day and night was significantly increased in the study area, with obvious asymmetry. The night warming was about 1.6 times as high as that at daytime. The Tmin was more conducive to vegetation growth than the Tmax. The proportion of vegetation types with positive relationship with Tmin was greater than the Tmax, with significant spatial difference. Subtropical vegetation accounted for 85.7% of vegetation with positive correlation with Tmax. The temperate alpine, mountainous, and desert vegetation responded more positively to Tmin. The increase of Tmin was not conducive to the growth and development of vegetation at high altitudes, while that of Tmax was the opposite. The correlations of vegetation growth with Tmax and Tmin were as follows: steppe > meadow > needleleaf forest > desert vegetation > broadleaf forest; meadow > desert vegetation > broadleaf forest > steppe > needleleaf forest.