Arid Zone Research ›› 2019, Vol. 36 ›› Issue (1): 253-261.doi: 10.13866/j.azr.2019.01.29

• Others • Previous Articles     Next Articles

Morphological Features of Nitraria tangutorum Nebkhas in Different Habitats

WEI Ya-juan1, WANG Ji1,2, DANG Xiao-hong1,2, ZHANG Yong3, XIE Yun-hu1, SHEN Gui-lu4, DING Yan-long1, WAN Fang1   

  1. 1. College of Desert Control Science and Engineering,Inner Mongolia Agricultural University,Hohhot 010018,Inner Mongolia,China;
    2. Inner Mongolia Hangjin Desert Ecosystem Positioning Research Station,Ordos 017400,Inner Mongolia,China;
    3. Xilin Gole League Forestry Investigation Designing Institute,Xilinhot 026000,Inner Mongolia,China;
    4. Inner Mongolia Lantai Industrial Corporation,Alashan 750336,Inner Mongolia,China
  • Received:2018-03-24 Revised:2018-07-06 Published:2025-10-17

Abstract: The morphological features of Nitraria tangutorum nebkhas in different habitats in the desert-oasis ecotone in Jilantai were investigated.The relationships among the morphological parameters and the growth of N.tangutorum nebkhas were quantitatively analyzed.The results are as follows:① The morphological parameters of N.tangutorum nebkhas along their long ellipsoidal direction varied in a wide range with the increase of stand age of Haloxylon ammodendron (except the N.tangutorum area),and the luxuriantly growing thickets evolved in some areas;② The correlation coefficients of the morphological parameters of N.tangutorum nebkhas in four different habitats were all higher than 0.782 and showed a significant correlation (P<0.01),which was the result of the cooperated development of the nebkhas in various habitats; ③ The regression equation analysis revealed that there was a significant linear relationship between the length and width (R2>0.721 7) and a relationship of power function and quadratic function between the horizontal size and height (R2>0.835 1) of N.tangutorum nebkhas in various habitats.Which indicated that the N.tangutorum nebkhas were all at the developing stage; ④ The height and coverage of N.tangutorum shrubbery affected significantly the morphological features of N.tangutorum nebkhas,that means the height,basal area and volume of the nebkhas were increased with the increase of plant height and coverage of N.tangutorum shrubbery.

Key words: Nitraria tangutorum, nebkha, Haloxylon ammodendron, morphological feature, desert-oasis ecotone, Jilantai, Ulanbuh Desert