surface basis meaning in English

面积基准

In addition , the weibull distribution is applied on the quest the regional space runoff rate . analytical expressions are presented for describing runoff over heterogeneous surface basis on physical mechanism of land surface hydrological process and by means of the statistics distribution theory . simulation test results show stochastic - dynamics method for the parameterization scheme of regional runoff over heterogeneous surface is creditable
文章还利用这种分布模式（ weibull ）拟合区域的降水在地表的空间分布型，并将此（中尺度区域）地表径流区域内所代表的瞬间径流率考虑为降水在地表的分配与地表（土壤）层水分吸收过程的余项。