摘要
研究了皆伐对亚热带常绿阔叶林和杉木林林地土壤 (δ 0～ 2 0cm)肥力的影响 .结果表明 :皆伐后林地土壤微生物数量增加 ,土壤酶活性增强 ,增强的幅度以水解酶活性为大 ,但随着时间的推移 ,微生物数量和酶活性均下降 ;土壤有机质、全氮、全磷含量下降 ,速效养分虽有较大幅度的增加 ,但随着时间的推移也呈下降趋势 ;土壤交换性能得到了一定程度的改善 ,土壤物理性质变差 .表 5参
The influence of clear cutting on soil fertility of Chinese fir plantation and evergreen broad-leaved forest was studied to explore the mechanisms of soil degradation and its improvement. The top 0～20 cm of each soil profile were sampled in sample plots and control plots at the 5th day before and the 10th,30th,60th,106th days after clear cutting,respectively. The changes of soil fertility before and after clear cutting were analyzed. The results showed that after clear cutting, the quantity of soil microbe in forest land increased, soil enzyme activities strengthened, and the strengthening range of hydrolase activity was larger than that of oxidation-reduction enzyme activity, yet, the quantity decreastd and activities weakened with the passage of time; soil organic matter, total N and total P decreased, and available nutrients raised to a fairly great extent, but, they also reduced as time went on; soil exchange property improved to a certain extent and soil physical property became worse. Tab 5, Ref 10
出处
《应用与环境生物学报》
CAS
CSCD
2002年第2期115-119,共5页
Chinese Journal of Applied and Environmental Biology
基金
国家自然科学基金重点资助项目 (No.39630 2 4 0 )
福建省教育厅科研基金资助 (No.k2 0 0 1 0 4 6)~~
