土壤水分和养分对沙质草地优势植物叶片氮回收效率的影响

张晶, 左小安, 吕朋

Effects of nutrient and water content on leaf nitrogen recovery efficiency of dominant plants in sandy grasslands

Jing Zhang, Xiaoan Zuo, Peng Lv

表1 降水变化、氮添加及其耦合效应对土壤全氮的影响

Table 1 Effects of precipitation variation， nitrogen addition and their coupling effects on soil nitrogen content

指标 处理 CK -60% +60% -60 d +60 d N0 +N N0 +N N0 +N N0 +N N0 +N 土壤全氮/(g·kg-1) 0.43±0.15b 0.44±0.17a 0.39±0.13b 0.43±0.16a 0.46±0.25a 0.41±0.22a 0.40±0.10b 0.46±0.26a* 0.43±0.19ab 0.45±0.26a