摘要
通过时西安南郊地区黄土层的取样分析，研究了不同植被下0～600cm土壤含水量变化。通过称重烘干法得出，林地、麦地土壤含水量从地表向下呈现出由高到低再到高的变化规律。土层具有分层性，分为速变层、缺水层和稳定层。在不同植被影响下，植物相应缺水带分布范围不同，麦地较浅0．7～2．2m，林地较深1，5～3．8m，这是由于植物根系分布范围不同造成的。杨树林下2～3．8m出现轻度土壤干层现象，但林木生长正常，在城市建设中可以考虑加强林木隔离带建设。长安区少陵塬土壤水分充足，适宜农作物种植。
Based on the sampling under the artificial forest in south suburb of Xian city and the analysis in the lab, the change of soil moisture content from zero to six meters was studied. Through weighing after being dried, soil moisture content demonstrated the draw of high to low and then to high from top to bottom. The soil can be divided into three layers： rapidly change layer, water lack layer and stable layer. The range of lacking water layer was different because of different plants. The range of lacking water layer of com-field was between 0.7 m and 2.2 m,while the range of lacking water layer of woods land was between 1.5 m and 3.8 m,which was deeper than that of com-field. The reason of it was that the range of plant root system was distributed differently. Slight soil dried layers appeared between 2 m and 3.8 m under the forest, but forest grow normally. We can consider strengthening forest median construction in the urban construction. Soil moisture content in sao-ling tomb was sufficient, which was suitable for planting crops.
出处
《安徽农业科学》
CAS
北大核心
2006年第1期110-111,共2页
Journal of Anhui Agricultural Sciences
基金
陕西省自然科学基金项目(2002D02)
国际地质对比计划项目(IGCP448)
关键词
土壤含水率
植被类型
西安市
Soil moisture content
Compared research
Xian city
作者简介
李广文（1978-），男，陕西勉县人，硕士研究生，研究方向：资源开发与环境治理。
