摘要
为研究黄土高原地区不同植被的土壤水分特征,确定土壤干层的发育深度,对岚县地区杨树、杏树、玉米和土豆4种不同植被0～300cm深度的土壤含水量进行定量分析。分析结果发现:1)4种植被的土壤含水量变化从大到小为:土豆>玉米>杨树>杏树,土壤含水量的平均值为:土豆>玉米>杨树>杏树;2)乔木发育有中度和严重土壤干层,农作物发育有轻度和中度土壤干层;3)4种植被类型不同深度的变异系数表现为0～100cm>100～200cm>200～300cm,呈逐渐变小的趋势,其中,乔木的速变层为0～100cm,相对稳定层是100～300cm,农作物的速变层为0～100cm,活跃层是100～300cm。
To study the soil moisture characteristics of different vegetation in loess plateau,and to determine the depth of soil dry layer development,this paper makes quantitative analysis for the soil water content of poplar,apricot,corn and potato in Lanxian area from 0 to 300 cm in depth in order to provide the basis for local artificial vegetation construction.The analysis finds that:(a)the change of soil moisture content from large to small in the four vegetation types is:potato>corn> poplar>apricot trees,and the average soil moisture content is:potato>corn> poplar> apricot trees;(b)arbor develops moderate and severe soil dry layers,and crops develop mild and moderate soil dry layers;(c)the coefficient of variation at different depths of the four vegetation types are shown as:0~100 cm>100~200 cm>200~300 cm,showing a tendency to gradually become smaller,among which,the rapid variable layer of the arbor is 0~100 cm,the relative stable layer is 100~300 cm,the rapid variable layer of the crop is 0~100 cm,and the active layer is 100~300 cm.
作者
孙雅楠
SUN Yanan(School of Surveying and Mapping,Anhui University of Science and Technology, Huainan 232000,China)
出处
《黑龙江工程学院学报》
CAS
2019年第2期13-17,共5页
Journal of Heilongjiang Institute of Technology
关键词
岚县
乔木
农作物
土壤水分
土壤干层
变异系数
Lan County
arbor
crop
soil moisture
soil dry layer
coefficient of variation
