梭梭和骆驼刺对干旱的适应策略差异

周洁, 杨晓东, 王雅芸, 隆彦昕, 王妍, 李浡睿, 孙启兴, 孙楠

Difference in adaptation strategy between Haloxylon ammodendron and Alhagi sparsifolia to drought

ZHOU Jie, YANG Xiao-Dong, WANG Ya-Yun, LONG Yan-Xin, WANG Yan, LI Bo-Rui, SUN Qi-Xing, SUN Nan

表2 干旱程度和物种对骆驼刺和梭梭功能性状的协同影响

Table 2 Collaborative influences of drought level and species on functional traits of Alhagi sparsifolia and Haloxylon ammodendron tested using two-way ANOVA

功能性状 Functional trait 干旱程度×物种 Drought level × species F p 叶性状 Leaf trait 叶厚或嫩枝叶直径 Leaf thickness or shoot diameter 0.43 0.81 叶面积 Leaf area 0.30 0.75 比叶面积 Specific leaf area 8.91 <0.01 干物质含量 Dry matter content 1.22 0.54 光合性状 Photosynthetic trait 净光合速率 Net photosynthetic rate 0.85 0.66 气孔导度 Stomatal conductance 1.89 0.39 蒸腾速率 Transpiration rate 0.01 0.99 水分利用效率 Water use efficiency 14.28 <0.01 水力性状 Hydraulic trait 叶水势 Leaf water potential 6.46 <0.05 枝水势 Twig water potential 5.23 <0.05 枝比导率 Twig specific hydraulic conductance 2.11 0.17