摘要
研究了西双版纳热带季节雨林林窗形成对土壤养分的影响。结果表明，季节雨林林冠下土壤的有机质、全氮、全磷、有效磷和硝化速率（以NO3－N计。分别为2.71％、0.140％、0．077％、14．56mg·kg－1和16．28mg·kg-1·月-1）都显著地（P＜0.001）高于林窗下的土壤（分别为1.32％、0．093％、0.047％、384mg·kg-1和-2．78mg·kg-1·月-1）。但对于氮净矿化速率（以NH4－N＋NO3－N计）、氨化速率（以NH4-N计）及NO3－N和NH4－N浓度,林冠下和林窗中的土壤差异不显著。
The influence of gap formation on soil nutrients in tropical seasonal rainforest in Xishuangbanna,southwest China was studied. The results showed that organic matter, total nitrogen, total phosphorus.available phosphorus and nitrification rate in the intact forest were all significantly higher (P<0. 001)than those in the gap. But net N mineralization, ammonification rates- NO3-N and NH4-N concentra-tion had no significant difference between the two sites.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1999年第6期78-80,共3页
Journal of Northeast Forestry University
基金
中国科学院重点支持项目!KZ952-S1-101
云南省自然科学基金!97C017R
关键词
热带季节雨林
林窗
林冠
土壤养分
西双版纳
Tropical seasonal rainforest
Forest gap
N mineralization
Nitrification
Phosphorus
