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基于電磁感應(yīng)技術(shù)的區(qū)域三維土壤鹽分空間變異研究
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國家自然科學(xué)基金資助項(xiàng)目(41171178);公益性行業(yè)(農(nóng)業(yè))科研專項(xiàng)經(jīng)費(fèi)資助項(xiàng)目(200903001);公益性行業(yè)(海洋)科研專項(xiàng)經(jīng)費(fèi)資助項(xiàng)目(201105020)


Regional 3-D Soil Salt Spatial Variability Based on Electromagnetic Induction Technology
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    摘要:

    以孔雀河流域典型地帶為研究區(qū)域,利用電磁感應(yīng)式大地電導(dǎo)率快速測(cè)定技術(shù)探測(cè)獲得表觀土壤電導(dǎo)率數(shù)據(jù),構(gòu)建了基于電磁感應(yīng)技術(shù)的區(qū)域尺度剖面分層土壤鹽分精確解譯模型,精準(zhǔn)解譯出研究區(qū)剖面土壤鹽分含量信息,并以此為數(shù)據(jù)源采用三維普通克里格法解析并評(píng)估了研究區(qū)土壤鹽分三維空間分布特征。研究表明,不同測(cè)量位數(shù)據(jù)的綜合應(yīng)用能夠表征剖面土壤鹽分信息,構(gòu)建出的剖面分層土壤鹽分解譯模型具有較好的精度;研究區(qū)不同區(qū)位土壤鹽分三維分布呈現(xiàn)明顯差異;研究區(qū)土壤主體屬中度以上鹽漬化,局部地帶屬于重度以上鹽漬化土壤,需采取有效治理措施對(duì)土壤鹽漬化進(jìn)行可靠防控。

    Abstract:

    Taking typical area of the Peacock River Basin as the study area, apparent electrical conductivity of soil was induced by using electromagnetic technology, and thus layered soil salinity interpreting models were built up. 3-D soil salt distribution was characterized by using 3-D ordinary Kriging method. The profile soil salt information was presented by different operation modes. The layered salinity interpreting models showed good accuracy. Soil salt distributions of different zones in this area were significantly different. Most of soil in study area belonged to moderate salinity, and some local areas were severe saline soil. Thus, the effective countermeasures should be taken to prevent and control soil salinization in this region.

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劉廣明,吳亞坤,楊勁松,余世鵬,王相平.基于電磁感應(yīng)技術(shù)的區(qū)域三維土壤鹽分空間變異研究[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2013,44(7):78-82,66. Liu Guangming, Wu Yakun, Yang Jingsong, Yu Shipeng, Wang Xiangping. Regional 3-D Soil Salt Spatial Variability Based on Electromagnetic Induction Technology[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(7):78-82,66.

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  • 在線發(fā)布日期: 2013-06-20
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