摘要
本文利用内蒙古大兴安岭原始林区2007年的气象观测资料,分析了土壤热通量和土温的日、年变化以及它们的关系。结果表明:土壤热通量和土壤温度的日年变化均表现为"S"形,均有1个最大值和1个最小值。土壤温度出现极值的时间均落后于土壤热通量,土壤温度的变化幅度均小于土壤热通量。对土壤热通量月平均值(Y)和土壤温度月平均值(X)进行回归分析,达显著水平,表明土壤温度与热通量的相关性很明显。该研究结果可为大兴安岭原始林区研究土壤热交换特征以及研究土壤-植被-大气连续的物质和能量交换系统打下一定基础。
Based on the meteorological data of 2007 in the Great Xinganling mountains of Inner Mongolia,we analyzed the relationship between the soil heat flux and soil temperature.The results showed that there was a obvious diurnal and seasonal variation both for the soil heat flux and the soil temperature.They all shows ＂s＂ curve,but the change of soil temperature lagged than the change of soil heat flux and the change rage for the soil heat flux was smaller than it did for the soil temperature.According to the regression analysis for the monthly mean soil heat flux and the monthly mean soil temperature,a significant positive relationship was found between them.The results will contribute to the research of nutrient and energy exchange among the soil-vegetation-atmosphere in the forest ecosystem.
出处
《内蒙古农业大学学报（自然科学版）》
CAS
北大核心
2010年第4期139-142,共4页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
基金
国家自然科学基金(30960317)
关键词
原始林区
土壤热通量
土壤温度
Virgin forest
Soil heat flux
Soil temperature
