氮肥添加对川西北高寒草甸植物群落根系动态的影响
字洪标,陈焱,胡雷,王长庭(
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Effects of nitrogen addition on root dynamics in an alpine meadow, Northwestern Sichuan
ZI Hong-Biao,CHEN Yan,HU Lei,WANG Chang-Ting()
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图2. 不同氮添加梯度根系年生产量和死亡量、平均现存量和周转率的变化(平均值±标准差, n = 6)。不同小写字母表示不同处理间差异显著(p < 0.05); 不同大写字母表示不同土层间差异显著(p < 0.05)。CK、N10、N20、N30同
Fig. 2. Cumulative length production, cumulative length mortality, mean root standing crop and Annual root turnovers over the growing season different nitrogen addition gradients (mean ± SD, n = 6). Different lowercase letters indicate significant differences in different treatment (p < 0.05). Different capital letters indicate significant different in different soil layers (p < 0.05). CK, N10, N20, N30, see
