摘要
森林生态系统作为生物圈的重要组成部分,维持着全球植被碳库的86%和土壤碳库的40%（Houghton et al.,2001;胡会峰等,2006）。因此,森林在调节全球气候、维持全球碳平衡方面起着非常重要的作用（Fang et al.,2001;Woodbury et al.,2007;Hu et al.,2008）。然而,
Forest management measures have a significant impact on carbon and nitrogen cycling in the forest ecosystems.In order to understand any effect of different fertilization treatments on water-soluble organic carbon,nitrogen（WSOC,WSON） contents,and emission of greenhouse gases,a fertilization experiment was conducted in the typical Phyllostachys edulis stands located in Lin＇an,Zhejiang Province.Six treatments were applied in this study： 1） no fertilization;2） ordinary fertilization amount;3） 2 times of ordinary fertilization amount;4） half of ordinary fertilization amount;5） only nitrogen fertilizer;and 6） P fertilizer and potash.WSOC and WSON contents,and emission rates of greenhouse gases（CO2 and N2O） were determined.The results showed that CO2 and N2O emission rates significantly increased with increase in the amount of fertilization（P 0.05）.In comparison with the control treatment,application of urea significantly increased emissions of CO2 and N2O（P 0.05）.The emission of CO2 was not significantly changed after 1 month of calcium superphosphate and potassium chloride application,while it significantly increased（P 0.05） after 6 months.Large amount of fertilizer（treatment 2 and treatment 3） significantly increased WSOC content（P 0.05）;and relatively small amount of fertilizer（treatment 4） and fertilization of super-phosphate and potassium chloride（treatment 6） had no significant effect on soil WSOC content.Fertilization treatment（except for treatment 6） significantly increased WSON content（P 0.05）.Correlation analysis showed that CO2 and N2O emission rates from the soil of P.edulis stands were significantly correlated to WSOC and WSON contents,respectively,indicating that increase in contents of WSOC and WSON caused by fertilization was probably the reason for the increase in emission of greenhouse gases.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2010年第12期165-170,共6页
Scientia Silvae Sinicae
基金
国家自然科学基金(30771715)
国家自然科学基金(30900190)
浙江省科技厅优先主题社会发展重点项目(2007C13041)
浙江省"151"人才基金
浙江林学院B类创新团队基金
关键词
毛竹
施肥
水溶性有机碳
水溶性有机氮
温室气体
Phyllostachys edulis
fertilization
water-soluble organic carbon（WSOC）
water-soluble organic nitrogen（WSON）
greenhouse gas
