内蒙古羊草草原的群落特征

要振宇, 辛玥, 穆文奎, 张全民, 杨柳, 赵利清

Community characteristics of Leymus chinensis steppe in Nei Mongol, China

YAO Zhen-Yu, XIN Yue, MU Wen-Kui, ZHANG Quan-Min, YANG Liu, ZHAO Li-Qing

图2 内蒙古羊草草原的物种组成。AH, 一、二年生草本; PH, 多年生草本; S, 灌木; SS, 半灌木。MP, 中生; MX, 中旱生; XP, 旱生; XM, 旱中生; SX, 强旱生。CA-MA, 中亚-亚洲中部分布种; EA, 东亚分布种; EPA, 东古北极分布种; HA, 泛北极分布种; MA, 中亚分布种; PA, 古北极分布种; PanT, 泛温带分布种; TE, 古地中海分布种; WS, 世界分布种。I, <20%; II, 20%-40%; III, 40%-60%; IV, 60%-80%; V, ≥80% 。

Fig. 2 Species composition of Leymus chinensis steppe in Nei Mongol. AH, annual and biennials; PH, perennial herbs; S, shrub; SS, sub-shrubs. MP, mesophyte; MX, meso-xerophyte; XP, xerophyte; XM, xero-mesophyte; SX, super xerophyte. CA-MA, Central Asia-Middle Asia element; EA, East Asia element; EPA, East Palearctic element; HA, Holarctic element; MA, Middle Asia element; PA, Palearctic element; PanT, Pan-Temperate element; TE, Tethys element; WS, World spread element.I, <20%; II, 20%-40%; III, 40%-60%; IV, 60%-80%; V, ≥80%.