Changes in pore size distribution and hydraulic properties of forest soil resulting from structural development

Hayashi, Yasuhiko; Kosugi, Ken’ichirou; Mizuyama, Takahisa

doi:10.1016/j.jhydrol.2006.05.003

Cited by 66 publications

(35 citation statements)

References 38 publications

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“…These models are developed based on the close similarity between the shapes of PSD and pore size distribution (Arya and Paris, 1981;Arya et al, 1999;Hayashi et al, 2006;Hwang and Choi, 2006). A significant contribution, the AP model, was made by Arya and Paris (1981).…”

Section: à3mentioning

confidence: 99%

“…Soils have a layered structure with obvious heterogeneity in both the horizontal and vertical directions (Li and Shao, 2013). It has been reported that land use, soil texture and structure have substantial effects on water retention (Hayashi et al, 2006;Wu et al, 2011;Haghverdi et al, 2015). Accurate prediction of soil water retention is essential for optimizing irrigation schedules, draining to alleviate salinization, and calculating ecological water requirement in this region.…”

Section: à3mentioning

confidence: 99%

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Predicting available water of soil from particle-size distribution and bulk density in an oasis–desert transect in northwestern China

Gao

Shao

et al. 2016

Journal of Hydrology

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Keywords:Soil water characteristic curve Soil available water Pedotransfer functions Oasis-desert transect s u m m a r y A detailed understanding of soil hydraulic properties, particularly the available water content of soil, (AW, cm 3 cm À3), is required for optimal water management. Direct measurement of soil hydraulic properties is impractical for large scale application, but routinely available soil particle-size distribution (PSD) and bulk density can be used as proxies to develop various prediction functions. In this study, we compared the performance of the Arya and Paris (AP) model, Mohammadi and Vanclooster (MV) model, Arya and Heitman (AH) model, and Rosetta program in predicting the soil water characteristic curve (SWCC) at 34 points with experimental SWCC data in an oasis-desert transect (20 Â 5 km) in the middle reaches of the Heihe River basin, northwestern China. The idea of the three models emerges from the similarity of the shapes of the PSD and SWCC. The AP model, MV model, and Rosetta program performed better in predicting the SWCC than the AH model. The AW determined from the SWCCs predicted by the MV model agreed better with the experimental values than those derived from the AP model and Rosetta program. The fine-textured soils were characterized by higher AW values, while the sandy soils had lower AW values. The MV model has the advantages of having robust physical basis, being independent of databaserelated parameters, and involving subclasses of texture data. These features make it promising in predicting soil water retention at regional scales, serving for the application of hydrological models and the optimization of soil water management.

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Section: à3mentioning

confidence: 99%

Section: à3mentioning

confidence: 99%

Predicting available water of soil from particle-size distribution and bulk density in an oasis–desert transect in northwestern China

Gao

Shao

et al. 2016

Journal of Hydrology

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“…Although numerous criteria had been used to define pore size classes, pores > 100 µm are often classified as large macropores, and 30 µm is often taken as the boundary between small macropores and mesopores, and pores of <0.2 µm are generally referred to as micropores [18]. Hence, pore size distribution in the current study was categorized into four classes: large and small macropores (>100 µm and 30-100 µm, respectively), and meso-(0.2-30 µm) and micropores (<0.2 µm).…”

Section: Relationship Between Soil Co 2 Efflux and Pore Size Distribumentioning

confidence: 99%

“…This could be owing to the different soil functions in different soil pores. Small macropores are responsible for optimizing both gas and water fluxes simultaneously in soil [18]. However, large macropores constitute free spaces where plant roots can grow or earthworm activity prevails [19].…”

Section: Relationship Between Soil Co 2 Efflux and Pore Size Distribumentioning

confidence: 99%

Effects of Soil Compaction and Tillage Practices on Carbon Dioxide Efflux in Northeast China: Evidence from an Incubation Study

Chen¹,

Yang²,

Liang³

et al. 2016

Pol. J. Environ. Stud.

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Limited information is available for how soil compaction affects carbon dioxide (CO 2 ) efflux under different tillage systems. To improve understanding of the effects of compaction and tillage on soil CO 2 efflux, an incubation study consisting of no tillage (NT), moldboard plow (MP), and ridge tillage (RT) was conducted to explore the relationships between CO 2 efflux and bulk density, as well as pore size distribution under different levels of bulk densities, and the thresholds of bulk density and the volume of pore size above which CO 2 efflux were affected in northeast China. Results showed that there was a significantly negative correlation (r = -0.990, p<0.05; r = -0.986, p<0.05; and r = -0.992, p<0.01, respectively, for NT, MP, and RT) between CO 2 efflux and bulk density, whereas the correlation was significantly positive (r ranges from 0.75 to 0.85, p<0.05 for each tillage practice under bulk densities of 1.0-1.6 g/cm 3 ) for the volume of small macropores (30-100 µm). The critical value of bulk density for impeding CO 2 efflux was more produced in 1.6 g/cm 3 and the volume of small macropores affected CO 2 efflux variation greatly. Ridge tillage is a better tillage practice for impeding soil CO 2 efflux than no tillage, as evidenced by the lesser volume of small macropores.

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“…The considerable increase in soil N was mainly due to the soil reclamation and fertilizer application. During reclamation, both the aboveground and underground parts of the crop can flourish yearly, and large amounts of tiny holes and channels observable in the soil with growing crops indicate a fibrous root system, creating micropores in the soil (Hayashi et al, 2006;Tejada et al, 2006). This can improve hydraulic conductivity in the soil structure and provide available water and nutrients for crops to grow.…”

Section: Spatial and Temporal Changes In Soil Nutrientsmentioning

confidence: 99%

Effects of different drip irrigation regimes on saline–sodic soil nutrients and cotton yield in an arid region of Northwest China

Wang

Kang

Wan

2015

Agricultural Water Management

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a b s t r a c tA field experiment was conducted on a saline wasteland in Xinjiang, Northwest China, during [2008][2009][2010] to evaluate the nutrient behavior and cotton yield during reclamation, applied by different drip irrigation regimes. The experiment included five treatments in which the soil matric potential (SMP) thresholds at 20 cm depth were controlled at −5, −10, −15, −20 and −25 kPa. The results indicated that both soil salinity and sodicity declined significantly at 0-40 cm depth and greater reductions were achieved at higher SMP thresholds (−5 and −10 kPa) than in other treatments. The distributions in soil inorganic nitrogen (N) and available phosphorus (P) and potassium (K) in the soil profile were mainly influenced by the point-source characteristic of drip irrigation, drip irrigation regime and fertilization mode. With the reclamation of both soil chemical and physical properties, there were dramatic increases in soil N, P and K concentration by the end of 2010. The soil nutrient concentrations in N, P and K were all proportional to the SMP thresholds, as higher SMP could result in greater reductions in soil salinity and sodicity. Since crop growth became more vigorous during reclamation, there was also a considerable increase (9.7-31.9%) in soil organic carbon by the end of 2010, and the concentrations were also proportional to SMP thresholds. The highest cotton yield was obtained in S1 (−5 kPa) treatment for both 2009 (2.87 Mg ha −1 ) and 2010 (3.60 Mg ha −1 ). Additionally, the soil C:N ratios were inversely proportional to the SMP thresholds in 2009 and 2010. Considering the soil reclamation efficiency, soil nutrient stocks and cotton yield, SMP thresholds of −5 and −10 kPa could be used as effective measures to trigger irrigation in the first 3 years of saline-sodic soil reclamation in Xinjiang, Northwest China.

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Changes in pore size distribution and hydraulic properties of forest soil resulting from structural development

Cited by 66 publications

References 38 publications

Predicting available water of soil from particle-size distribution and bulk density in an oasis–desert transect in northwestern China

Predicting available water of soil from particle-size distribution and bulk density in an oasis–desert transect in northwestern China

Effects of Soil Compaction and Tillage Practices on Carbon Dioxide Efflux in Northeast China: Evidence from an Incubation Study

Effects of different drip irrigation regimes on saline–sodic soil nutrients and cotton yield in an arid region of Northwest China

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