| Cite this article: | 赵磊,曹文华,李鑫浩,等.黄泛平原风沙区不同土地利用方式土壤水分对降水的响应[J].灌溉排水学报,,():-. |
| zhaolei,Cao Wenhua,Li Xinhao,et al.黄泛平原风沙区不同土地利用方式土壤水分对降水的响应[J].灌溉排水学报,,():-. |
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| The Response of Soil Moisture to Precipitation of Different Land Use Types in the Sandy Area of the Yellow River Flood Plain |
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zhaolei1, Cao Wenhua2, Li Xinhao1, Zhang Boyan1, Zhang Chuanjie1
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1.Shandong Agricultural University;2.Mortoring Center of Soil and Water Conservation
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| Abstract: |
| 【Objective】The study of the response of soil water content to precipitation and its time stability under different land use methods is of great significance to improving regional land productivity and improving the regional ecological environment.【Method】In this study, three experimental treatments were set up in the wind～sand area of the Yellow River floodplain, farming area (T1 treatment), bare area (T2 treatment), and natural restoration area (T3 treatment). In 2016~2019, the soil depth of 0～5 cm and 5～10 cm was used. Dynamic monitoring of water content and local rainfall, statistical analysis of different land use methods, dynamic changes of soil water content of different soil layers and response to precipitation, and relative difference method to analyze the time stability of soil water content.【Result】 (1) The soil water content during the monitoring period showed: T3 treatment>T1 treatment>T2 treatment, and the average soil moisture content of 0～5 cm and 5～10 cm had significant differences (P<0.05), and the soil moisture content varied with the soil;(2) There is a significant positive correlation between the soil water content of different soil layers and precipitation under different land use methods (P<0.01). The soil water content increases with the increase in precipitation. The greater the precipitation, the more significant the increase in soil water content. When the precipitation is less than 60 mm, the soil water content of 0～5 cm responds more significantly to the precipitation, and when the accumulated precipitation is greater than 60 mm, the precipitation mainly acts on the 5～10 cm soil layer; (3) There are significant differences in the time stability of different soil layers. The standard deviation (SDRD) and time stability index (ITS) of the relative difference of soil water content of 0～5 cm soil layer of T1 treatment and T2 treatment are larger than 5～10 cm, and the time stability is poor, while that of 0～5 cm soil of T3 treatment are relatively small, and the time stability is strong. There are also significant differences in the temporal stability of soil moisture between the same soil layer and different land use modes. The temporal stability of soil moisture in 0～5 cm: T3 treatment >T2 treatment >T1 treatment; the temporal stability of soil moisture in 5～10 cm: T2 treatment >T1 treatment >T3 treatment.【Conclusion】T3 treatment is significantly better than T1 treatment and T2 treatment in terms of soil surface water retention. |
| Key words: soil water content; precipitation; temporal stability; land use patterns; the sandy area of the Yellow River flood plain |
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