宁夏蒙古扁桃群落特征与分类

蒙古扁桃(Amygdalus mongolica)是中国珍稀濒危保护植物, 对植物区系进化、维持荒漠生态系统多样性与稳定性具有较高的学术价值和诊断意义。在宁夏境内设置14个样地, 利用样地调查法对蒙古扁桃群落组成进行了研究。结果表明: 蒙古扁桃群落记录到物种有74种, 隶属于28科53属; 生长型统计显示乔木2种, 灌木21种, 半灌木11种, 多年生草本36种, 一年生草本4种。依据TWINSPAN等级分类将14个蒙古扁桃样地划分为蒙古扁桃-草本荒漠、蒙古扁桃-半灌木荒漠2个群丛组和蒙古扁桃-戈壁针茅(Amygdalus mongolica - Stipa tianschanica var. gobica)、蒙古扁桃-猫头刺(Amygdalus mongolica - Oxytropis aciphylla)、蒙古扁桃-短花针茅(Amygdalus mongolica - Stipa breviflora)、蒙古扁桃-蓍状亚菊(Amygdalus mongolica - Ajania achilleoides)、蒙古扁桃-阿拉善披碱草(Amygdalus mongolica - Elymus alashanicus)、蒙古扁桃-蓍状亚菊+短花针茅(Amygdalus mongolica - Ajania achilleoides + Stipa breviflora) 6个群丛。该研究结果将为蒙古扁桃的保护和利用以及该群系植被志的编纂提供基础数据。

Community characteristics and classification of Amygdalus mongolian in Ningxia,China

Amygdalus mongolica is a kind of rare and endangered plant in China, which has high academic value and diagnostic significance for the evolution of the flora and the biodiversity and stability of the ecosystem. The 14 Amygdalus mongolica sites were set up to investigate its community composition in Ningxia. The results showed that the 74 plant species in Amygdalus mongolica sites in Ningxia belong to 53 genera from 28 families were recorded, including 2 trees, 21 shrubs, 11 subshrubs, 36 perennial herbs and 4 annual herbs. TWINSPAN divides 14 Amygdalus mongolica sites into Amygdalus mongolica - Herbs Desert, Amygdalus mongolica - Subshrubs Desert Associations Group and Amygdalus mongolica - Stipa tianschanica var. gobica, Amygdalus mongolica - Oxytropis aciphylla, Amygdalus mongolica - Stipa breviflora, Amygdalus mongolica - Ajania achilleoides, Amygdalus mongolica - Elymus alashanicus, Amygdalus mongolica - Ajania achilleoides + Stipa breviflora 6 Associations. Our study will provide basic data for the protection, utilization and compilation of vegetation of Amygdalus mongolica.