野生太白贝母生境调查与根际土壤分析

为了解野生太白贝母的生境及根际土壤状况,对太白县等4个县域的野生太白贝母进行了实地调查.结果显示:太白贝母生于海拔2000～3300 m的山地草丛或林下,海拔是影响太白贝母生境适宜性最重要的生态因子,生境内植物分布具有明显的高海拔特征,乔木层多为落叶阔叶林,郁闭度较高,林下灌木层大多呈现稀疏状.不同产地太白贝母根际土壤...

Habitat Investigation and Rhizosphere Soil Analysis of Wild Fritillaria taibaiensis

To understand the habitat and rhizosphere soil status of wild Fritillaria taibaiensis, a field survey was conducted in four counties in Shaanxi Province including Taibai County. The results showed that Fritillaria taibaiensis was found under mountain grass or forest at the altitude of 2000-3300 m, and the altitude was the most important ecological factor affecting the habitat suitability of Fritillaria taibaiensis. The plant distribution in the habitat had obvious high altitude characteristics. The tree layer was mostly deciduous broad-leaved forest with high canopy density, and the shrub layer under the forest was sparse. The variation coefficient of pH in the rhizosphere soil of Fritillaria taibaiensis from different producing areas changed a little, which was only 1.84% and showing that the soil was neutral. The content of nutrient elements and organic matters in the soil changed greatly, and the variation coefficient of alkali hydrolyzable nitrogen was the largest of 97.53%. The population of wild Fritillaria taibaiensis was discontinuous, fragmented and sporadic.