凋落物输入变化和氮添加对半干旱草原群落生产力及功能群组成的影响

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嘎玛达尔基¹^,², 杨泽¹^,², 谭星儒¹^,², 王珊珊¹^,², 李伟晶¹^,², 游翠海¹^,², 王彦兵¹^,², 张兵伟¹^,³, 任婷婷¹^,², 陈世苹¹^,²^,^*(

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Effect of altered litter input and nitrogen addition on ecosystem aboveground primary productivity and plant functional group composition in a semiarid grassland

GAMADAERJI ¹^,², YANG Ze¹^,², TAN Xing-Ru¹^,², WANG Shan-Shan¹^,², LI Wei-Jing¹^,², YOU Cui-Hai¹^,², WANG Yan-Bing¹^,², ZHANG Bing-Wei¹^,³, REN Ting-Ting¹^,², CHEN Shi-Ping¹^,²^,^*(

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图5. 不同凋落物输入变化和氮添加处理下, 各功能群相对生物量多年平均值的变化。图中数据均为平均值±标准误差。星号表示不同氮处理间的差异显著(**, p < 0.01; ***, p < 0.001)。C0, 凋落物移除; C1, 对照; C2, 凋落物添加; N0, 无氮添加; N1, 氮添加。AB, 一二年生植物; PB, 多年生丛生禾草; PF, 多年生杂类草; PR, 多年生根茎禾草; SS, 灌木与半灌木。

Fig. 5. Variations in the relative biomass of the five functional groups in different litter input and nitrogen addition treatments. The data in the figure are mean ± SE. Asterisk indicated significant difference between different nitrogen treatments (**, p < 0.01; ***, p < 0.001). C0, litter removal; C1, control; and C2, litter addition; N0, nitrogen-free control; N1, nitrogen addition. AB, annual and biannual plants; PB, perennial bunch grasses; PF, perennial forbs; PR, perennial rhizome grasses; SS, shrubs, and semi-shrubs.