氮磷添加对昆仑山北坡高山草地N2O排放的影响

曹登超,高霄鹏,李磊,桂东伟,曾凡江,匡文浓,尹明远,李言言,艾力•甫拉提

Effects of nitrogen and phosphorus additions on nitrous oxide emissions from alpine grassland in the northern slope of Kunlun Mountains, China

CAO Deng-Chao,GAO Xiao-Peng,LI Lei,GUI Dong-Wei,ZENG Fan-Jiang,KUANG Wen-Nong,YIN Ming-Yuan,LI Yan-Yan,Aili PULATI

表1 不同氮磷添加处理下昆仑山北坡高山草地土壤N2O累积排放量(平均值±标准误差)

Table 1 Cumulative N2O emissions of grassland soil under different nitrogen and phosphorus addition treatments in alpine grassland in the northern slope of Kunlun Mountains, China (mean ± SE)

处理 Treatment N2O排放通量 N2O emission (kg N·hm-2) p 对照 CK 0.50 ± 0.05B 氮添加 nitrogen addition 1.45 ± 0.06A 0.002 磷添加 phosphorus addition 0.35 ± 0.02B 0.025 氮磷混施 nitrogen + phosphorus addition 0.52 ± 0.05B 0.226