生态环境学报Issue(4)：595-601,7.DOI:10.16258/j.cnki.1674-5906.2015.04.008
衡阳紫色土丘陵坡地不同植被恢复阶段土壤化学与微生物性质
Soil Chemistry and Microbes of Purple Soils of Sloping-land at Different Stages of Vegetation Restoration in Hengyang, China
摘要
Abstract
By using the spatial series to replace time series, four typical sampling plots, grassplot (GT), frutex and grassplot (FG), frutex (FX), and arbor and frutex (AF), were selected to explore the relationships between soil nutrient and soil microbe. The four communities on sloping-land with purple soils were similar and typical, and denoted four different successive stages in Hengyang of Hunan Province, South-central China. The results showed that, (1) the average value of SOC (Soil organic carbon), TN (Total nitrogen), AN (Alkali-hydrolyzed nitrogen), AP (Available phosphorus), AK(Available potassium), SMBC (Soil microbial biomass carbon) and SMBN (Soil microbial biomass nitrogen) in four re-vegetation stages are significantly increased from GT to AF (P<0.05), and these contents are significantly decreased with the increase of soil layer depth in every re-vegetation stage (P<0.05). (2) The average number of bacteria in four re-vegetation stages are followed the order as AF>FX>FG>GT, and the average number of bacteria of AF are significantly higher than other three re-vegetation stages (P<0.05), fungi, FG>GT>FX>AF, and the average number of fungi of AF are significantly lower than other three re-vegetation stages (P<0.05), actiomycete, GT>FX>FG>AF, and the average number of actiomycete of AF are significantly lower than other three re-vegetation stages (P<0.05), the number of bacteria, fungi and actiomycete are significantly decreased with the increase of soil layer depth in every re-vegetation stage (P<0.05). (3) Correlation analysis show that there are very significant positive correlation between the number of bacteria, SMBC, SMBN and SOC, TN, AN (P<0.01), and significant positive correlation between the number of fungi and SOC, TN, AN (P<0.05), and significant positive correlation between SMBC, SMBN and AP, AK(P<0.05). These results would have a theoretical and practical significance for building re-vegetation technique system.关键词
植被恢复/土壤养分/土壤微生物/紫色土/衡阳Key words
re-vegetation/soil nutrient/soil microbe/purple soils/Hengyang分类
农业科技引用本文复制引用
刘作云,杨宁..衡阳紫色土丘陵坡地不同植被恢复阶段土壤化学与微生物性质[J].生态环境学报,2015,(4):595-601,7.基金项目
湖南省科技厅项目（S2006N332）；湖南省林业科技创新计划项目 （）
