氮磷添加对昆仑山北坡高山草地N2O排放的影响
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Effects of nitrogen and phosphorus additions on nitrous oxide emissions from alpine grassland in the northern slope of Kunlun Mountains, China
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图2. 不同氮磷添加处理下草地土壤N2O排放速率的动态变化(平均值±标准误差)。箭头表示氮磷添加日期。*表示处理间存在显著差异(p < 0.05)。CK, 对照; N, 氮添加; N + P, 氮磷混施; P, 磷添加。 |
Fig. 2. Dynamic variation of daily N2O flux rate from grassland soil under different nitrogen and phosphorus addition treatments (mean ± SE). Arrow indicates date of nitrogen and phosphorus addition treatments. * indicates significant differences between treatments (p < 0.05). CK, control; N, nitrogen addition; N + P, nitrogen and phosphorus addition; P, phosphorus addition. |
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