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Journal of Desert Research ›› 2018, Vol. 38 ›› Issue (4): 756-764.DOI: 10.7522/j.issn.1000-694X.2017.00043

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Morphological Structure and Biomass Allocation of Echinops gmelini in Different Habitats

Wang Yanli1,2, Qi Xinyu3, Yang Haotian1, Song Guang1,2, Du Jun1,2   

  1. 1. Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Couege of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
  • Received:2017-03-12 Revised:2017-04-24 Online:2018-07-20 Published:2018-11-06

Abstract: Annual species are a major component of sand ecosystem herbaceous vegetation. Echinops gmelini is widely distributed in desert regions, which contains characteristics of germination early, high density, fast growth and reproduction ratio higher. And it is the most important component of desert communities at late spring and early summer. This paper aims are with the evolution of the sand habitats restoration and vegetation that morphology and biomass allocation characteristics of E.gmelini will change and it has instruction significance for soil habitat restoration? This study analyzes E. gmelini morphology and biomass allocation characteristics in the different stages of vegetation restoration of desert. The results showed that:(1) The preliminary stability of sand surface conditions are conducive to the growth of E. gmelini and then present a trend of population decline after a long succession. (2) The relationships between aboveground biomass and belowground biomass were isometric in all habitats, which did support isometric scaling hypothesis.In addition, aboveground biomass and leaf biomass, aboveground biomass and leaf biomass were all allometric in four habitats. (3)Plant height, inflorescence number and the ground biomass had significant or extremely significant positive correlation that showed a good synergy change trend.

Key words: Echinops gmelini, annual plants, morphological structure, biomass allocation, artificial sand-fixation region

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