摘要
通过对不同土地利用类型下土壤水分空间变化进行研究，结果表明：土壤含水量与土壤容重呈负相关，相关系数为-0．095；不同土层土壤水分变化呈中等变异性，40～60cm土壤水分变异性达0．989；不同土地利用类型下，土壤含水量差异显著（P〉0．05），植物篱不种植农作物（T3）土壤含水量最高（21．25），其次为草地（T4）（20．62），而受人类活动严重干扰下的植物篱＋农作物（T1）、农作物（T2）土壤含水量最低；T2田间持水量随深度增加呈递减趋势，其余利用类型土地田间持水量在0～40cm土层呈下降规律，至40cm附近为最低值，然后随深度进一步增加呈缓慢升高趋势。
Through the research on spatial change of soil moisture in different land use type. The results showed that ： The first one was that there was negative correlation between the volume weight of soil and the soil moistare and the corre- lation coefficient was - 0. 095. The second one was that soil moisture change had medium variability in different soil lay- ers. The third one was that soil moisture significantly changes（ P 〉 0.05）with different land use type. The hedgerow（T3） without crops has the highest moisture（21.25）and the moisture of grassland was second high. The soil moisture of lands with hedgerow and crops and lands only with crops was the lowest. The forth one was that the field capacity of T2 declines with the depth decreasing. The field capacity of soils under other land use type declines between 0 and 40 cm depth and get the lowest in 40 cm depth, then it slowly decreases with the depth decreasing.
出处
《华北农学报》
CSCD
北大核心
2009年第B08期173-175,共3页
Acta Agriculturae Boreali-Sinica
基金
河北省“十一五”科技支撑计划项目(08236708D)
中国科学院知识创新工程重要方向项目(KSCX2-YW-N-48-03)
国土资源厅财政预算项目(2008995392)
