桂林理工大学学报2017，Vol.37Issue(4)：665-670,6.DOI:10.3969/j.issn.1674-9057.2017.04.018
亚热带红壤丘陵小流域土地利用类型对土壤微生物活性和土壤呼吸的影响
Effects of land use types on microbial activities and soil respiration of small watershed in subtropical red soil hilly region
摘要
Abstract
Comprehensive management of land in small watershed is very important in our country,the land use patters affects soil quality change,and soil microbial activities are important factors in soil quality.In order to reveal that the effects of land use types on siol quality in low hilly red soil area,we determined soil chemical and microbial activities (including microbial biomass carbon (Cmic),microbial biomass nitrogen (Nmic),respiratory quotient(qCO2),microbial quotient(qM),soil basal respiration (BR))factors in five types land in Ruijin,Jiangxi province.The results showed that land use patterns significantly affected soil microbial activity in low hilly red soil region,and Cmic and Nmic were highest in abandoned land,the values were 277.1 mg/kg and 53.25 mg/kg,respectively.But the lowest values in dry farmland were 90.31 mg/kg and 20.05 mg/kg,respectively.BR has the highest value in abandoned land,the value was 0.93 μg CO2-C · g-1 · h-1,but the lowest was 0.58 μg CO2-C · g·h-1 in dry farmland.qCO2 and qM also showed significant difference in different land use types,but qCO2 was lowest in dry land and highest in abandoned land.The value of qM was high in abandoned land.The results of correlation analysis showed that soil microbial biomass under different land use had significantly positive correlation with soil organic carbon and total nitrogen (P ＜ 0.05).It showed that the abandoned land and secondary forest soils maintained better quality than other land use patters,and the soil quality of dry farmland was the worst.关键词
红壤丘陵区/土壤质量/微生物活性/土壤呼吸/土地利用类型Key words
red soil hilly region/soil quality/microbial activities/soil respiration/land use types分类
农业科技引用本文复制引用
熊林,林荣科,王敦球,叶丽丽,蒋金平..亚热带红壤丘陵小流域土地利用类型对土壤微生物活性和土壤呼吸的影响[J].桂林理工大学学报,2017,37(4):665-670,6.基金项目
国家自然科学基金项目(41261098) （41261098）
广西矿冶与环境科学实验中心项目(KH2012ZD004) （KH2012ZD004）
广西高等学校高水平创新团队及卓越学者计划项目(002401013001) （002401013001）
