关 键 字(英文)：N deposition addition South subtropics Forests Soil fauna.
摘 要(英文)：In this paper , simulated N deposition addition (0 , 50 , 100 and 150 kg·hm- 2 ·yr - 1 ) by spreading water or
NH4NO3 was conducted to study the early responses of soil fauna in three typical native forests (monsoon ever2
green broadleaf forest ,pine forest ,and broadleaf2pine mixed forest) of subtropical China. The results showed that
in monsoon evergreen broadleaf forest ,N deposition addition had an obviously negative effect on the three indexes
for soil fauna ,but in pine forest ,the positive effect was significant ( P < 0. 05) ,and the soil fauna community
could reach the level in mixed forest ,even that in monsoon evergreen broadleaf forest at sometime. The responses
in mixed forest were not obvious. In monsoon evergreen broadleaf forest ,the negative effects were significant ( P
< 0. 05) under medium N deposition ,but not under low N deposition. In pine forest ,the positive effect was sig2
nificant ( P < 0. 05) under high N deposition ,especially for the number of soil fauna groups. The results obtained
might imply the N saturation2response mechanisms of forest ecosystems in subtropical China ,and the conclusions
from this study were also consisted with some related researches.
模拟氮沉降增加对南亚热带主要森林土壤动物的早期影响