干旱区研究

Arid Zone Research ›› 2016, Vol. 33 ›› Issue (3): 577-583.doi: 10.13866/j.azr.2016.03.18

• Climatic Change • Previous Articles     Next Articles

Influence of Climate Change on the Phenophase of Larix gmelinii in the Greater Khingan Mountains

YANG Li-ping1, QIN Yan2, ZHANG Cun-hou1, FENG Xu-yu1, YANG Li3   

  1. 1. Inner Mongolia Centre of Ecology and Agrometeorology, Huhhot 010051, Inner Mongolia,China;
    2. Institute of Grassland Research, Chinese Academy of Agricultural Sciences, Huhhot 010010, Inner Mongolia, China;
    3. College of Forestry, Inner Mongolia Agricultural University, Huhhot 010019, Inner Mongolia,China
  • Received:2015-09-06 Revised:2015-12-11 Online:2016-05-15 Published:2016-05-31

PDF (PC)

839

Like

Abstract: Phenological phenomenon is an important indicator to climate change. Influence of climate change on the phenophase of Larix gmelinii in the Greater Khingan Mountains has a vital significance to guide forestry production. In this paper, the influence of climate change on the phenophase of Larix gmelinii in the Greater Khingan Mountains was analyzed based on the data of the phenophase of Larix gmelinii during the period of 1987-2012 and the climate data during the period of 1961-2014 at Eerguna City Agriculture and Animal Husbandry Meteorological Station and by using the linear trend estimation and Pearson correlation index method. Research results are as follows: ① In recent 50 years, temperature increased significantly, climate trend rate was 0.34 ℃·(10a)-1, changes of precipitation and sunshine duration were not obvious; ② during the period of 1987-2012, phenophase dates of bud open (BO), first leaf unfolding (LU), end of leaf coloration (LC) and end of leaf fall (LF) of Larix gmelinii were all put off, LC and LF were delayed by 17.282 d and 12.144 d per 10 a respectively. Growing season was prolonged, and the average growing season was for 165 d; ③ Temperature was the key meteorological factor affecting the phenophase of Larix gmelinii, and the effects of precipitation and sunshine duration were relatively weak. Temperature, precipitation and sunshine duration affected inordinately on LC, and LF was more sensitive to sunshine duration.

Key words: phenophase, Larix gmelinii, climate change, correlation analysis, Eerguna City, Inner Mongolia