生态环境学报Issue(9)：1441-1446,6.DOI:10.16258/j.cnki.1674-5906.2015.09.003
亚热带红壤丘陵区不同人工林型对土壤理化性质、微生物类群和酶活性的影响
Effects of Different Artificial Forestry on Soil Physio-chemical Properties, Microbial Groups and Enzyme Activities in Subtropical Red Soil Hilly Region
摘要
Abstract
The aim of this study was to explore effects of different artificial forestry on soil physio-chemical properties, microbial groups and enzyme activities in subtropical red soil hilly region. Taking four kinds of artificial forestry (C. camphora (CC), C. lanceolata (CL), C. lanceolata-C. camphora (CLCC) and Natural restoring (NR)) and barren grassland (CK) nearby as test objects, soil samples from depths of 0~10, 10~20 and 20~40 cm were collected to study the effects of four kinds of artificial forestry on soil physio-chemical properties, microbial groups and enzyme activities through the combination of sample investigation and experimental analysis. The results showed that:(1) Compared with barren grassland (CK), the total number of microbes in different artificial forestry were followed the order as CLCC>CC>CL>NR>CK (P<0.05). (2) The activities of soil urease (URE) in different artificial forestry were followed the order as CC>CLCC>CL>NR>CK (P<0.05);Invertase (INV), CC>NR>CLCC>CK>CL (P<0.05), Acidity phosphatase (APE), CC and CLCC>NR>CL>CK (P<0.05). (3) In the profile, soil microbial groups and enzyme activities decrease with the increase of soil depth. 4)Correlation analysis showed that the contents of bacteria and fungi have a significant or very significantly positive correlation with URE and APE (P<0.05 or P<0.01);the soil microbial groups and enzyme activities have a very significantly positive correlation with soil organic matter (SOM), total nitrogen (TN) and available nitrogen (AN) (P<0.01). All the results showed that returning farmland to forests (grass) could increase the number of soil microbial groups and the activities of soil enzyme, promoting the improvement of soil physical properties and the heighten of soil fertility.关键词
亚热带红壤丘陵区/不同人工林型/土壤理化性质/土壤微生物类群/土壤酶活性Key words
subtropical red soil hilly region/different artificial forestry/soil physio-chemical properties/soil microbial groups/soil enzyme activities分类
农业科技引用本文复制引用
刘飞渡,韩蕾..亚热带红壤丘陵区不同人工林型对土壤理化性质、微生物类群和酶活性的影响[J].生态环境学报,2015,(9):1441-1446,6.基金项目
国家林业局948重点项目（2008-4-32）；湖南省教育厅科学研究项目（13C253）；湖南省林业科技创新计划项目 （）
