摘要
采用气压过程分离(Barometric process separation,BaPS)技术,研究油松(Pinus tabulaeformis Carr.)天然林土壤含水量、土壤温度和细根生物量对土壤总硝化速率、反硝化速率和呼吸速率的影响及其在0～52cm土层的变化.结果表明:油松天然林内土壤总硝化速率和呼吸速率随土层深度增加呈递减趋势,反硝化速率在各层间的波动较大;土壤总硝化速率和呼吸速率与土壤含水量、土壤温度及细根生物量均显著正相关(P<0.05);土壤反硝化速率和土壤含水量、土壤温度以及细根生物量相关不显著.
The effects of soil water content, soil temperature and fine root biomass on gross nitrification, denitrification and respiration rates in natural Pinus tabulaeformis forest soil in the Taiyue Mountains, China, and the changes in the rates with different depths of soil were investigated using the barometric process separation （BaPS） technique. The results indicated that the gross nitrification and respiration rates showed a decreasing trend as the soil depth increased, but the denitrification rate fluctuated strongly. The soil water content, soil temperature and fine root biomass had significant positive effects on the gross nitrification and respiration rates （P0.05）, but had no positive effect on the denitrification rate. Fig 4, Tab 2, Ref 28
出处
《应用与环境生物学报》
CAS
CSCD
北大核心
2010年第4期519-522,共4页
Chinese Journal of Applied and Environmental Biology
基金
财政部林业行业专项项目(No.20090422)和林业公益性行业专项(No.200804006/rhh-02)~~
关键词
总硝化速率
反硝化速率
呼吸速率
气压过程分离(BaPS)
不同土层
油松天然林
gross nitrification rate
denitrification rate
respiration rate
Barometric process separation
natural Pinus tabulaeformis forest
soil depth
