Study of Soil Saturated Hydraulic Conductivity in Sand Dunes of the Horqin Sand Land

Yao, Shuxia; Zhang, Tong Hui; Zhao, Chuancheng

doi:10.4028/www.scientific.net/amr.610-613.2959

Cited by 3 publications

(3 citation statements)

References 5 publications

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“…Accordingly, precipitation was the main factor that affected soil water and caused similar trends of temporal patterns for different land uses. Therefore, land use was the main reason that affected the spatial variations, and precipitation was the main factor that influenced the temporal patterns, which was consistent with the recent findings from Yao et al (2012). …”

Section: Influences Of Precipitation Infiltration On Vertical Soil Wasupporting

confidence: 80%

Analysis of soil moisture condition under different land uses in the arid region of Horqin sandy land, northern China

2015

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Abstract. Land use plays an important role in controlling spatial and temporal variations of soil moisture by influencing infiltration rates, runoff and evapotranspiration, which is important to crop growth and vegetation restoration in semiarid environments, such as Horqin sandy land in north China. However, few studies have been conducted comparing differences of dynamics of soil water conditions and the responses of soil to infiltration under different land use types in semiarid area. Five different land use types were selected to analyze soil moisture variations in relation to land use patterns during the growing season of 2 years. Results showed that soil moisture condition was affected by different land uses in semi-arid sandy soils. The higher soil moisture content among different land uses was exhibited by the grassland, followed by cropland, poplar land, inter-dunes and shrub land. The temporal variations of soil moisture in different land uses were not always consistent with the rainfall due to the dry sequence. Moreover, soil water at the surface, in the root zone and at the deep soil layer indicated statistical differences for different types of land cover. Meanwhile, temporal variations of soil moisture profile changed with precipitation. However, in the deep soil layer, there was a clear lag in response to precipitation. In addition, seasonal variations of profile soil moisture were classified into two types: increasing and waving types. And the stable soil water layer was at 80-120 cm. Furthermore, the infiltration depth exhibited a positive correlation with precipitation under all land uses. This study provided an insight into the implications for land and agricultural water management in this area.

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Section: Influences Of Precipitation Infiltration On Vertical Soil Wasupporting

confidence: 80%

Analysis of soil moisture condition under different land uses in the arid region of Horqin sandy land, northern China

2015

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“…Horqin Sand Land is one of China's four major sandy lands. The ecological environment here is fragile, and SWC is a key factor for its ecosystem stability, structure and normal functioning (Yao et al, 2013). Therefore, it is necessary to analyze the statistical characteristics of SWC in the farmland which covering a large area in this region.…”

Section: Introductionmentioning

confidence: 99%

Statistical characteristics of soil water content at farmland of the Horqin Sand Land

Yao¹,

Zhao²,

Yang³

et al. 2015

Proceedings of the 2015 International Forum on Energy, Environment Science and Materials

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Based on the observed data of soil water content (SWC) at farmland from May to September in 2009~2012, the statistical characteristics of SWC in farmland at different soil depths (from 0 to 150 cm) and different months in the growing season (from May to September) in Korqin Sand Land were analyzed. In addition, by Skewness, Kurtosis test method, the normality of SWC of farmland in different soil layers and different months were tested. And then, we obtained the estimates and the confidence interval of the mean and variance for the normal distribution of SWC. The results indicated that: (1) The SWC of farmland at the same month and same soil depth passed the hypothesis testing of normal distribution at the significance level of 0.1 a = ; (2) SWC of farmland changed from 12% to 28% in 2009~2012; The standard deviation of SWC at farmland was 2~6; and the variation coefficients between 0~1, that was, belonged to the medium variation; (3) SWC at farmland was highest in July, and significant difference with other month in the growing season; And hence, the estimates and confidence interval for the mean and variance of SWC in July were significantly different from other month of the growing season; (4) SWC of farmland was lowest at 0~10 cm and differently from other soil layer, and it was highest at 120~150 cm; the change characteristics of the average value of SWC at farmland with soil depth was firstly increased, and then decreased, and finally increased.

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“…Hongjian LI et al analyzed the spatial-temporal characteristics of Loess Plateau's soil moisture variation [3]. Shuxia YAO et al studied the variation process and characteristics of different types of sand soil moisture along with time and soil thickness [4]. Lei GAO discussed the stability of soil moisture as well as the space scales of relevant variables in depth [5].…”

Section: Introductionmentioning

confidence: 99%

Study on the Dynamic Variation Law of Highway Slope's Soil Moisture

Tian

Cao

Song

et al. 2014

AMM

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[Objective] Soil moisture is the key factor of highway greening. To maintain the steady and sustainable development of highway greening, the problem of soil moisture should be primarily solved. [Method] In this paper, the dynamic variation law of highway slope’s soil moisture was studied by the continuous observation of the soil moisture (0~40cm) and rainfall in all points (sunny slope, shade slope, ground, and the central partition belt) of China’s Langfang—Zhuozhou Highway from April to November 2009. [Result] From April to May, the soil moisture content declined continuously. From May to August, the soil moisture content increased rapidly and also was kept at a higher level. From August to October, the soil moisture content declined gradually. From October to November, the soil moisture content increased steadily. The soil moisture in the surface (0~10cm) and the lower layer (10cm~20cm) fluctuated greatly, and the variation coefficient was 28.39% and 24.85% respectively; the change of the soil moisture content in the deep layer (20cm~40 cm) decreased significantly, and the variation coefficient was 19.41%. [Conclusion] The seasonal dynamic variation law of highway slope’s soil moisture is significant, and also keeps consistent with the dynamic rainfall, plant transpiration, and soil evaporation laws. The soil moisture conditions from May to August are the best. The spatial variation of the soil moisture can be divided into two layers: the rapid-variation layer (0~20 cm) and the active layer (20cm~40 cm). In each observation point, the soil moisture conditions are the best in the central partition belt, secondary in the sunny and shade slopes, and the worst in ground.

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Study of Soil Saturated Hydraulic Conductivity in Sand Dunes of the Horqin Sand Land

Cited by 3 publications

References 5 publications

Analysis of soil moisture condition under different land uses in the arid region of Horqin sandy land, northern China

Analysis of soil moisture condition under different land uses in the arid region of Horqin sandy land, northern China

Statistical characteristics of soil water content at farmland of the Horqin Sand Land

Study on the Dynamic Variation Law of Highway Slope's Soil Moisture

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