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區(qū)域尺度土壤入滲參數(shù)空間變異性規(guī)律研究
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國家自然科學(xué)基金資助項目（51079121）,、陜西省自然科學(xué)基金資助項目（2010JQ7010）,、中國博士后科學(xué)基金資助項目、西安理工大學(xué)博士科研啟動基金資助項目和陜西省重點學(xué)科建設(shè)資助項目


Spatial Variability of Infiltration Parameters at the Region Scales
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    摘要:

    以在楊凌區(qū)進(jìn)行的土壤入滲試驗為基礎(chǔ),，利用標(biāo)定理論,、統(tǒng)計學(xué)與地統(tǒng)計學(xué)相結(jié)合的方法研究了Philip入滲公式的標(biāo)定過程,，以及標(biāo)定因子的空間變異規(guī)律。研究結(jié)果表明：在研究區(qū)域內(nèi)不同標(biāo)定因子中αA標(biāo)定的效果最優(yōu),，可用αA對入滲曲線進(jìn)行標(biāo)定,；利用統(tǒng)計學(xué)原理計算了不同置信水平和精度要求下入滲測點的合理取樣數(shù)；采用ArcGIS軟件對標(biāo)定因子αA的空間變異規(guī)律進(jìn)行了分析,；建立了可根據(jù)易測定的土壤物理參數(shù)直接估算αA的土壤轉(zhuǎn)換函數(shù),，并通過驗證，其結(jié)果可較好地解決區(qū)域尺度內(nèi)土壤入滲參數(shù)的點面轉(zhuǎn)換問題,。

    Abstract:

    Based on the infiltration experiments in Yangling district, the objective was to analyze the scaling process of Philip model. The spatial variation discipline of scaling factors was found out and the pedo-transfer function was established for estimating scaling factors. The study showed that the scaling of infiltration process based on αA was the best among different scaling factors in Yangling district. Therefore, the infiltration curves in the regional scale can be scaled with αA. Meanwhile, the reasonable sampling number was calculated under the different confidence levers and required precision. The spatial variation discipline of αA by ArcGIS software was analyzed, and the pedo-transfer function was established to estimate αA. Accuracy of the estimate αA was analyzed in terms of pedo-transfer function, the results suggested that it has feasible and reliable for estimating αA, which could be used to achieve the conversion of soil infiltration between point and region. 

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聶衛(wèi)波,費(fèi)良軍,馬孝義.區(qū)域尺度土壤入滲參數(shù)空間變異性規(guī)律研究[J].農(nóng)業(yè)機(jī)械學(xué)報,2011,42(7):102-108. Nie Weibo, Fei Liangjun, Ma Xiaoyi. Spatial Variability of Infiltration Parameters at the Region Scales[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(7):102-108.

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