现代农业科技Issue(12)：159-161,168,4.
根与凋落物对樟树人工林土壤呼吸的影响
Impact of Root and Litterfall on Soil Respiration in Cinnamomum camphora Plantation
摘要
Abstract
Using the measurement system of Li-8100 soil CO2 efflux system,We observed the rate of soil respiration of the Cinnamomum camphora forest plantation which had been 10 to 20 years in Forestry Park of Changsha,Hunan.The results showed that the dynamic of the mean soil respiration rates per month displayed the single peak curve basically. The maximum value appeared between July and August,and the minimum value appeared between February and March . Soil respiration rate ranges of the control plots,root exclusion and litter exclusion were 0.39~9.34,0.29~5.77 and 0.43~6.22μmol/m2·s,respectively,The annual mean soil respiration rates were 3.351,2.145 and 2.154μmol/m2·s,respectively. The model Rs=aebtW c,neither soil temperature nor soil water content could explain the seasonal variation of soil respiration well.Soil temperature and soil water content together could explain 95.2%~97.6% of seasonal variation in soil respiration rates.The Q10 values of the soil respiration in the control plots,root exclusion and litter exclusion were respectively 1.998,1.744 and 1.815.The results indicated that root and litterfall were important factors in affecting soil CO2 efflux in forests.关键词
樟树/凋落物/根/土壤呼吸/Q10值Key words
Cinnamomum camphora plantation/litterfall/root/soil respiration/Q10分类
农业科技引用本文复制引用
杨淞,张超,杨辉,王姣龙,何丹,周迎..根与凋落物对樟树人工林土壤呼吸的影响[J].现代农业科技,2015,(12):159-161,168,4.基金项目
2014-01-01至2017-12-31国家公益性行业专项“亚热带人工林固碳潜力及增汇途径研究”（201404316）。 （）
