浙江农林大学学报2011，Vol.28Issue(3)：439-443,5.
洞庭湖区滩地不同土地利用类型土壤呼吸动态
Soil respiration dynamics for different land-use types on the shoreline of Dongting Lake
摘要
Abstract
A variety of biotic and abiotic factors influence soil respiration. To contribute to a further understanding of soil respiration dynamics and to help provide an accurate calculation of carbon emissions, the relationship between soil respiration dynamics and environmental factors for three land-use types: reeds, farmland, and poplar forest, along the shoreline of Dongting Lake was field tested using an LI-8100 gas analyzer and analyzed for diurnal and seasonal changes in the soil respiration rate. A correlation analysis of the soil respiration rate among factors of near-surface temperature, 0-5 cm soil moisture, 0-5 cm soil temperature, and air humidity was conducted. Results showed that the dynamic performance of seasonal and diurnal changes in soil respiration were all single-peaked. Peak value times differed with the lowest value occurring about 5: 00 A.M. Soil respiration intensity for land-use type was in the order: reeds ＞ poplars ＞ farmland with soil respiration rate exemely significantly correlated to near-surface temperature (P＜0.01), 0-5 cm soil moisture (P＜0.01), and 0-5 cm soil temperature(P＜0.01 ). Moreover,there was highly significant correlation between popular forest and air humidity. In total, soil respiration was synergied by soil temperature and 0-5 cm soil moisture(P＜0.05).关键词
土壤学/滩地/土壤呼吸/昼夜变化/季节变化/土壤温度/土壤含水量分类
农业科技引用本文复制引用
唐洁,李志辉,汤玉喜,吴敏,李永进,王胜..洞庭湖区滩地不同土地利用类型土壤呼吸动态[J].浙江农林大学学报,2011,28(3):439-443,5.基金项目
"十一五"国家科技支撑计划项目(2006BAD03A15) （2006BAD03A15）
