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地下水淺埋條件下單向凍結(jié)土壤水熱變化試驗(yàn)
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國家自然科學(xué)基金資助項(xiàng)目（40472132）、國家國際科技合作專項(xiàng)資助項(xiàng)目（2012DFA20770）、高等學(xué)校博士學(xué)科點(diǎn)專項(xiàng)科研基金資助項(xiàng)目（20131402110008）、山西省自然科學(xué)基金資助項(xiàng)目（2012011033—2）和太原理工大學(xué)2012年校青年基金資助項(xiàng)目（2012L016）


Variation of Soil Temperature and Moisture under Unidirectional Freezing with Shallow Groundwater
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    摘要:

    采用室內(nèi)土壤單向凍結(jié)試驗(yàn)裝置，進(jìn)行了地下水位埋深為87.5cm的小幅降溫、中幅降溫和大幅降溫3種凍結(jié)氣溫作用下砂壤土和粉質(zhì)粘壤土的溫度和土壤含水率的監(jiān)測。結(jié)果表明：小幅降溫、中幅降溫和大幅降溫凍結(jié)條件下砂壤土地表溫度較粉質(zhì)粘壤土分別低0.88、2.06和2.81℃，土壤剖面溫度分別在第31、33和37天達(dá)到穩(wěn)定降溫階段；砂壤土水分主要聚集在10～30cm，而粉質(zhì)粘壤土水分主要聚集在10～40cm；小幅降溫凍結(jié)下，砂壤土0～10cm土壤含水率較中幅降溫和大幅降溫凍結(jié)下高1.5%和7.3%，粉質(zhì)粘壤土0～10cm土壤含水率較中幅降溫和大幅降溫凍結(jié)下高2.3%和2.7%。

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    In order to reveal the influence of decreasing range of freezing air temperature (DRFT) and soil texture on soil temperature variation and soil moisture migration with shallow groundwater, three freezing schemes, less DRFT, medium DRFT and larger DRFT, were conducted with the groundwater level depth of 87.5cm, and the temperature and moisture content of sandy loam and silty clay loam were monitored. The results showed that the surface temperature of sandy loam was lower than that of silty clay loam freezing by less DRFT, medium DRFT and larger DRFT about 0.88℃, 2.06℃ and 2.81℃, and soil profile temperature reached steady decreasing stage in 31d, 33d and 37d respectively. Soil moisture of sandy loam mainly gathered at the depth of 10cm to 30cm and that of silty clay loam gathered at the depth of 10cm to 40cm. Soil moisture of sandy loam at the depth of 0cm to 10cm freezing by less DRFT was higher than that freezing by medium DRFT and larger DRFT about 1.5% and 7.3%, while it was 2.3% and 2.7% respectively for silty clay loam. 

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陳軍鋒,楊軍耀,鄭秀清,秦作棟,劉萍,臧紅飛.地下水淺埋條件下單向凍結(jié)土壤水熱變化試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2014,45(12):146-151,248. Chen Junfeng, Yang Junyao, Zheng Xiuqing, Qin Zuodong, Liu Ping, Zang Hongfei. Variation of Soil Temperature and Moisture under Unidirectional Freezing with Shallow Groundwater[J]. Transactions of the Chinese Society for Agricultural Machinery,2014,45(12):146-151,248.

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  • 收稿日期:2014-08-11
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  • 在線發(fā)布日期: 2014-12-10
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