摘要
研究了准噶尔盆地土壤盐分和水分含量对浆果猪毛菜种群分布、幼苗存活的影响。结果表明:浆果猪毛菜在苗期对土壤表层盐分含量非常敏感。表层土壤盐分含量显著影响浆果猪毛菜种群优势度、密度和盖度。土壤含水量仅在表层土壤盐分含量较低时,影响浆果猪毛菜种群密度和分盖度。深层土壤盐分含量(90 cm)显著影响浆果猪毛菜种群在群落中的优势度,土壤含盐量增加,浆果猪毛菜种群优势度降低,个体数量减少。
Salinity tolerance of seedlings is very important for plant establishment in arid regions. In this study, the effects of soil salinity and moisture content on seedling survival and population distribution of Salsola foliosa in the Junggar Basin were investigated. The results show that the seedlings of Salsolafoliosa were very sensitive to soil salinity. Salt content in topsoil affected significantly the dominance, density and coverage of the population of Salsola foliosa. Soil moisture content affected the density and coverage of the population of Salsola foliosa only when the soil salt content was low. Salt content in deep soil （90 cm） affected significantly the population dominance of Salsola foliosa. The dominance of population and the plants of Salsola foliosa decreased with the increase of soil salinity.
出处
《干旱区研究》
CSCD
北大核心
2009年第5期727-733,共7页
Arid Zone Research
基金
自治区科技攻关项目(0545041,200633131)
