青藏高原东缘窄叶鲜卑花灌丛生长季土壤无机氮对增温和植物去除的响应

马志良,赵文强,赵春章,刘美,朱攀,刘庆

Responses of soil inorganic nitrogen to increased temperature and plant removal during the growing season in a Sibiraea angustata scrub ecosystem of eastern Qinghai-Xizang Plateau

Zhi-Liang MA,Wen-Qiang ZHAO,Chun-Zhang ZHAO,Mei LIU,Pan ZHU,Qing LIU

表1 增温(W)、植物处理方式(P)以及取样时间(D)对土壤硝态氮、铵态氮和硝态氮/铵态氮的重复测量方差分析

Table 1 Results of the repeated measures ANOVA showing the p values for the responses of the soil nitrate and ammonium contents and nitrate/ammonium to increased temperature (W), plant treatments (P), and sampling dates (D)

因子 Factor D D × P D × W D × P × W P W P × W 硝态氮 Nitrate <0.001 <0.001 <0.001 0.002 0.002 0.001 0.086 铵态氮 Ammonium <0.001 0.949 0.232 0.368 0.051 0.496 0.516 硝态氮/铵态氮 Nitrate/ammonium <0.001 <0.001 0.015 0.025 <0.001 0.001 0.046