Welcome to Chinese Journal of Applied Ecology! Today is Share:

Chinese Journal of Applied Ecology ›› 2022, Vol. 33 ›› Issue (2): 378-384.doi: 10.13287/j.1001-9332.202202.004

Previous Articles     Next Articles

Effects of water levels in heterogeneous habitats on sexual reproductive allocation of Deyeuxia angustifolia.

DONG Hai-peng1, CAO Hong-jie1, XIE Li-hong1, HUANG Qing-yang1, YANG Li-bin1, NI Hong-wei2, WANG Ji-feng1*   

  1. 1Institute of Nature Resources and Ecology, Heilongjiang Academy of Sciences, Harbin 150040, China;
    2Heilongjiang Academy of Forestry, Harbin 150081, China
  • Received:2021-05-11 Revised:2021-08-25 Online:2022-02-15 Published:2022-08-15

Abstract: Taking Deyeuxia angustifolia as the research object, a representative plant of wetland in Sanjiang Plain, we analyzed the variations of individual size and biomass among the habitats of swamp wetlands, swampy meadows, typical meadows and miscellaneous grass meadows, and the relationship between reproductive components and plant biomass. We explored the effects of water level on individual biomass and reproductive allocation of D. angustifolia in different types of wetlands. The results showed that plant biomass, height and the characteristics of sexual reproduction significantly decreased with the increases of water level. The reproductive thresholds of D. angustifolia in miscellaneous grass meadow, typical meadow, swampy meadow, and swamp wetland were 0.245, 0.149, 0.148 and 0.157 g, respectively. There was a significantly negative correlation between plant size and reproductive allocation in three habitats except swampy meadow. Compared with individual size, soil water content had a stronger effect on reproductive allocation of D. angustifolia. The different investment between individual size and reproductive allocation in different habitats was the basic condition that contributes to the good ecological adaptability of D. angustifolia.

Key words: Sanjiang Plain wetland, water level, Deyeuxia angustifolia, sexual reproductive allocation