...土壤含水量；海南岛 [gap=13031]Key words: Eucalyptus forest; plant diversity of understorey; annual rainfall; water content of the soil; Hainan island 作者简介：杨再鸿，男，1969 年 12 月生；理学硕士，讲师。主要从事生态学和环境科学方 面的教学与科研工作。
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the water content of soil 土壤水分含量
On the basis of the experimental data in farmland, a function relationship between the potential evapotranspiration and the relative water content of the soil in the root zone was established.
以田间实验资料为基础，建立农田蒸散量和土壤相对含水量与潜在蒸散的函数关系。
The water content of the soil sample was changed by drying and humidification process. After different freeze-thaw cycles, the unconfined resilient moduli of the soil sample were tested respectively.
通过风干和增湿改变试件的含水量，并经历不同的冻融循环次数后，分别测试土体的无侧限回弹模量。
The first is to measure the water content of soil across the planet every three days to a depth of up to 2m.
第一是每三天测量一次全球深至2米处土壤中的水含量。
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