不同立地条件下黄花补血草种群生长、繁殖与土壤水分的差异

Differences of Population Growth,Reproduction of Limoniumand Soil Moisture Under Different Site Conditions

[目的]揭示不同立地条件下黄花补血草种群生长、繁殖与土壤水分的差异,为黄花补血草的管理提供科学依据。[方法]选取4个不同沙丘类型的黄花补血草地斑块作为试验样地,研究黄花补血草的生长、繁殖以及水分等。[结果](1)不同立地类型黄花补血草种群的生长与繁殖特征存在明显差异,它主要反映在单株地上生物量、高度、冠幅和密度方面;(2)不同类型的沙丘上黄花补血草单株生殖枝数、花量均存在显著差异的相关性;(3)不同立地类型的黄花补血草土壤含水量存在明显差异,但是在不同的土壤深度上土壤的含水率的差异不显著,丘间地不同土壤深度的土壤含水率差异比较大。[结论]干旱荒漠生境条件下最适宜生长的黄花补血草的沙丘类型为丘间地。

[Objective] Population growth, reproduction of Limonium and soil moisture were measured to test the differences under different site conditions in order to improve the management of Lirnonium planataion. [Methods] Four different types of dunes were selected to research the growth, reproduction and moisture of Lirnoniurn. [Results] （1） Limonium growth and reproductive characteristics had significant differences under different types of sand dune in above ground biomass, height,crown width and density; （2） For all types of dune, reproductive tillers per plant and flower numbers had significantly correlation; （3） Soil moistures planted with Limonium in different types of sand dune were different obviously, but no significant differences in profile were found, and soil moistures among inter-dunes were also insignificant. [Conclusion] The interdune ground is suitable for Limonium growth in desert habitats.