南京林业大学学报（自然科学版）2017，Vol.41Issue(6)：115-119,5.DOI:10.3969/j.issn.1000-2006.201607048
火烧对北亚热带天然次生林土壤有机碳的影响
Effects of fire on soil organic carbon in natural secondary forest in north subtropical areas
摘要
Abstract
[Objective]This study was aimed at examining the effects of fire on soil organic carbon in a natural secondary forest in north subtropical regions of China.[Method] Experiments were conducted to analyze changes in soil organic car-bon and soil nutrient levels at a depth of 0-50 cm in one year after a fire in anatural secondary forest located in the north subtropical regions. Five sample plots were established in the burnt forest regions and control regions which size of 20 m× 20 m, soil samples from 0-50 cm deep layers were collected, and the levels of soil organic carbon and soil nutrients were measured.[Result] Light fraction organic matter(LFOM), easily oxidized carbon(EOC) and soil total organic car-bon(TOC) levels were higher in the burnt forest soil than the control area, which increased by 1.2%-61.5%, 9.6%-47.4%, 3.9%-35.1%, respectively. The changes in these indicators reached significance at soil depth of 0-10 cm (P<0.01), implying that after the increase in TOC, soil LFOM and EOC were basically on the surface, and carbon in soil storage at a depth of 0-50 cm increased by 18.8% in one year after the forest fire compared with the control areas. LFOM, TOC and EOC directly affected the nutrient status of the soil, especially after the forest fire. [Conclusion] In one year after the forest fire, TOC and soil nutrient content increased mainly in surface soil.关键词
天然次生林/火烧迹地/土壤有机碳/土壤养分Key words
natural secondary forest/burned blank/soil organic carbon/soil nutrient分类
农业科技引用本文复制引用
钱国平,赵志霞,李正才,周君刚,程彩芳,赵睿宇,孙娇娇..火烧对北亚热带天然次生林土壤有机碳的影响[J].南京林业大学学报（自然科学版）,2017,41(6):115-119,5.基金项目
浙江省重点科技创新团队项目(2010R50030) （2010R50030）
浙江省自然科学基金项目(LY12C03012) （LY12C03012）
" 十二五" 国家科技支撑计划(2012BAC13B02) （2012BAC13B02）
