摘要
采用定位取样与烘干法,测定了陕蒙高速公路主要绿化树种土壤含水量。结果表明:中央分隔带与边坡(路堑式、路堤式)绿化树种土壤含水量表现为中央分隔带绿化树种>路堤式边坡绿化树种>路堑式边坡绿化树种;土壤含水量的垂直分布格局为表层土壤含水量最低,随着土壤深度的增加,土壤含水量呈增加趋势;不同绿化树种土壤含水量具有明显的季节变化规律,土壤含水量按季节变化可分为三个阶段,4-5月为土壤水分弱失水阶段,6-8月为土壤水分消耗阶段,9-10月为土壤水分缓慢恢复阶段。
The temporal and spatial change of soil water content under main planted tree species along the highway from shaanxi to Inner Mongolia was measured and analyzed.The results are as follows: The soil water content change rule for the medial strip>the embankment type>cuts the type;Soil moisture content's vertical distribution pattern is lowest for the surface layer soil moisture content,along with depth of soil's increase,the soil moisture content assumes increases the tendency;Soil moisture content's season dynamic rule has the obvious seasonal variation rule for the different planted tree species soil moisture content,the soil moisture content may divide into three stages according to the seasonal variation,soil moisture weak dehydration stage from April to May,soil moisture consumption stage from June to August,soil moisture restores the stage slowly from September to October.
出处
《西北林学院学报》
CSCD
北大核心
2008年第6期29-32,共4页
Journal of Northwest Forestry University
基金
陕西省交通厅项目(05HX01)
陕西省教育厅科技计划项目(07JK443)
榆林学院高学历人才科研项目(06GK011)
榆林学院校内项目(06YK027)
关键词
陕蒙高速公路
绿化树种
土壤水分
时空变化
Shaanxi-Inner Mongolia highway
planted tree species
soil moisture
temporal and spatial change
