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3 昆仑山北坡高山草地N2O排放与环境变量的相关性和决定系数

Table 3 Correlation coefficients of daily N2O flux rate with environmental variables in alpine grassland in the northern slope of Kunlun Mountains

硝态氮 NO3--N 铵态氮 NH4+-N 速效磷 AP pH 可溶性有机碳 DOC 微生物生物量碳 MBC 微生物生 物量氮 MBN 土壤孔隙含水率 WFPS 气温 Air temperature 土壤温度 Soil temperature -0.17 -0.08 -0.11 0.53** 0.67** -0.30* -0.17 -0.16 -0.19 0.05