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基于GPS與GE的土壤水力參數(shù)空間變異采樣間距確定
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國(guó)家自然科學(xué)基金資助項(xiàng)目（51179150）和國(guó)家自然科學(xué)基金重點(diǎn)資助項(xiàng)目（91025018）


Sample Spacing of Spatial Variability of Soil Hydraulic Parameters in Basin Scale Based on GPS and Google Earth
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    摘要:

    為在土壤分析研究時(shí)，制定工作量少,、試驗(yàn)設(shè)計(jì)經(jīng)濟(jì)合理,，同時(shí)采樣點(diǎn)具備代表性的野外采樣方案，采用GPS與Google Earth相結(jié)合的方法,，在陜西省涇惠渠灌區(qū)研究了土壤水力參數(shù)區(qū)域尺度的空間變異性,，結(jié)果表明：土壤飽和含水率與飽和導(dǎo)水率在該區(qū)域尺度下屬于中等變異，且兩者均具有較強(qiáng)的空間依賴(lài)性,；飽和含水率的最佳擬合模型為球形模型,，土壤飽和導(dǎo)水率的最佳擬合模型為指數(shù)型；推薦兩者的采樣間距分別為2.38km和7.14km,。

    Abstract:

    There are some problems, such as how to use advanced methods, how to make less work, economical and reasonable experimental design and how to make representative sampling points during soil analysis. The above-mentioned problems are becoming research difficulties and hotspots in recent years. A research on spatial variability of soil hydraulic parameters basin scale in Jinghui Irrigation, Shaanxi Province was made based on GPS and Google Earth methods. The results showed that saturated soil moisture content and saturated hydraulic conductivity moderate variation in the regional scale show out moderate variability and strong spatial dependence. The best-fitting models for saturated soil moisture content and saturated hydraulic conductivity are spherical model and exponential model, respectively. As for the above two, the sample spacing of 2.38km and 7.14km are recommended.

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王衛(wèi)華,王全九.基于GPS與GE的土壤水力參數(shù)空間變異采樣間距確定[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2014,45(3):97-100. Wang Weihua, Wang Quanjiu. Sample Spacing of Spatial Variability of Soil Hydraulic Parameters in Basin Scale Based on GPS and Google Earth[J]. Transactions of the Chinese Society for Agricultural Machinery,2014,45(3):97-100.

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  • 收稿日期:2013-12-04
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  • 在線(xiàn)發(fā)布日期: 2014-03-10
  • 出版日期: 2014-02-10
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