%0 Journal Article
%A LÜ Chao-Yan
%A ZHANG Xi-Ming
%A GAO Zhi-Xi
%A XIONG Bai-Lian
%A HAN Chang
%A WANG Jia-Zhen
%T Basic Characteristics of Soil Seed Bank of <em>Haloxylon ammodendron</em> in Junggar Basin
%D 2017
%R 10.7525/j.issn.1673-5102.2017.01.015
%J Bulletin of Botanical Research
%P 109-117
%V 37
%N 1
%X Soil seed bank is the refuge of seed and the basis of vegetation regeneration and recovery in arid desert region. <em>Haloxylon ammodendron</em>-based desert vegetation is the important ecological barrier of Junggar Basin's oasis area, however, the researches of soil seed bank characteristics which are closely related to population regeneration of <em>H.ammodendron</em> are relatively lacking. Basic characteristics of the soil seed bank of <em>H.ammodendron</em> in Junggar Basin were researched by field sampling,physical screening and laboratory experimenting. The results showed that:(1)The soil seed bank densities of <em>H.ammodendron</em> populations varied from 71 to 696 seed&middot;m<sup>-2</sup>, especially in some local environments it reached 7 534 seed&middot;m<sup>-2</sup>. (2)The coefficient of variation analysis identified that the coefficients of variation of the soil seed bank density were more than 1. It meant that the quantitative distribution of soil seed bank was very uneven. (3)The seed germination rates in the soil seed banks varied from 2.08% to 47.62% and the average was approximately 18%. (4)The analysis of variogram indicated that there were obvious differences in the spatial distribution of seeds in the soil seed bank of <em>H.ammodendron</em> populations. In summary, the characteristics of high density, germination ability and spatial variability would effect on the distribution pattern and regeneration of <em>H.ammodendron</em> populations.
%U https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2017.01.015