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

宋琳, 雒文涛, 马望, 何鹏, 梁潇洒, 王正文

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

SONG Lin, LUO Wen-Tao, MA Wang, HE Peng, LIANG Xiao-Sa, WANG Zheng-Wen

表1 干旱处理、物种/功能群及其交互作用对草甸草原优势植物生物量和植物非结构性碳水化合物(NSCs)各组分含量及其比值影响的混合效应模型结果

Table 1 Results of mixed-effect model analysis of drought treatment, species/functional group and their interactions on the nonstructural carbohydrates (NSCs), soluble sugars (SS) and starch (ST) concent and biomass of different species in a meadow grassland

生物量 Biomass 可溶性糖 SS 淀粉 ST 可溶性糖/淀粉 SS/ST NSCs F p F p F p F p F p 物种 Species 干旱 Drought (D) 2.195 0.146 33.645 <0.001 0.216 0.645 12.937 0.001 27.713 <0.001 物种 Species (S) 28.212 <0.001 36.017 <0.001 8.115 <0.001 47.012 <0.001 20.478 <0.001 干旱×物种 D × S 0.558 0.732 25.508 <0.001 3.321 0.012 13.872 <0.001 19.880 <0.001 功能群 Functional group 干旱 Drought (D) 0.960 0.332 5.528 0.023 0.130 0.720 2.144 0.149 6.627 0.013 功能群 Functional (F) 26.055 <0.001 1.510 0.225 0.459 0.501 0.412 0.524 2.185 0.145 干旱×功能群 D × F 0.154 0.696 0.014 0.905 6.236 0.016 0.326 0.571 0.280 0.599