摘要
北京低山区的土壤水分具有不均一性 ,同一地点、同一土层 30个样点的土壤含水量的变异系数为 0 0 92～ 0 2 4 9。土壤水分动态变化规律 ,可分为 6个时期 :冬春期、春旱时期、雨季前期、盛雨期、雨季后期和秋冬期 ;土壤温度动态变化也可分为 6个时期 :冬春期、春暖期、高温前期、高温期、高温后期和秋冬期。北京土壤温度属温性土壤温度状况。
Soil moisture possess heterogeneity The variance coefficient of the soil moisture in lower mountain in Beijing appeared in the range of 0 092～0 249. According to natural seasons, the dynamic changes of the soil moisture were divided into six periods:①winter and spring,②spring drought,③before rainy season,④rainy season,⑤after rainy season,⑥autumn and winter. The dynamic changes of the soil temperature were divided into six periods: ①winter and spring,②spring warm,③before high temperature,④high temperature,⑤after high temperature,⑥autumn and winter. The soil temperature regime in Beijing belongs to mesothermal category.
出处
《河北林果研究》
2000年第1期10-14,共5页
Hebei Journal of Forestry and Orchard Research
关键词
土壤水分
土壤温度
动态变化
森林
北京
soil moisture
heterogenity
soil temperature
dynamic changes
