极端干旱对草甸草原优势植物非结构性碳水化合物的影响

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宋琳¹^,², 雒文涛¹^,^*(

), 马望¹^,², 何鹏³, 梁潇洒¹, 王正文¹

Extreme drought effects on nonstructural carbohydrates of dominant plant species in a meadow grassland

SONG Lin¹^,², LUO Wen-Tao¹^,^*(

), MA Wang¹^,², HE Peng³, LIANG Xiao-Sa¹, WANG Zheng-Wen¹

图2. 草甸草原物种和功能群植物生物量对干旱处理的响应。
Grass, 禾草功能群; Non-grass, 非禾草功能群。其中响应比为干旱与对照小区中非结构性碳水化合物(NSCs)的比值, 水平误差条表示95%的置信区间, 皆由R语言中的“metaphor”包计算得出。圆代表物种, 方块代表功能群; 实心表示响应显著(p < 0.05), 空心表示响应不显著。

Fig. 2. Response ratio of the biomass of six herbaceous species and different plant functional groups to drought in a meadow grassland. T.l., Thermopsis lanceolata; A.f., Artemisia frigida; C.d., Carex duriuscula; Cy.d., Cymbaria dahurica; L.c., Leymus chinensis; S.b., Stipa baicalensis; Grass, grass functional group; Non-grass, non-grass functional group.
The response ratio is biomass (drought)/biomass (control), the horizontal error bars represent the 95% confidence interval, which are calculated by “metaphor” in R. Solid circles indicate the significant responses of herbaceous plant species level nonstructural carbohydrates (NSCs) to drought (p < 0.05), while the hollow circles represent no significant response. Solid squares represent significant response of NSCs in different functional groups to drought, while hollow squares represent no significant response.