Soil salinity of urban turf areas irrigated with saline water

Miyamoto, S.; Chacon, Arturo; Hossain, Manwar; Martinez, I.

doi:10.1016/j.landurbplan.2004.03.006

Cited by 13 publications

(7 citation statements)

References 9 publications

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“…Most of our experience with the use of poor quality irrigation water is derived from studies focussing on the use of saline water for irrigation of crop fields (e.g. Rhoades et al, 1992;Ayars et al, 1993) and use of urban and industrial wastewater in forestry and amenity areas (Miyamoto and Chacon, 2006;Thwaites et al, 2006). Irrigating soils with wastewater containing excess salts with sodium as the dominant ion may adversely affect infiltration, hydraulic conductivity and aggregate stability (Abu-Sharar and Salameh, 1995;Suarez et al, 2006;Eltaif and Gharaibeh, 2007).…”

Section: Introductionmentioning

confidence: 99%

Reuse of laundry greywater as affected by its interaction with saturated soil

Misra

Sivongxay

2009

Journal of Hydrology

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SUMMARYWe conducted laboratory experiments on a well aggregated, non-swelling clay soil to measure water retention, saturated hydraulic conductivity (K s ) and salts present in the irrigation and drainage water to study the impacts of reusing untreated laundry greywater (GW) to irrigate soils in the residential garden beds. We used undisturbed (field) and disturbed (loose and compacted) soil cores to represent situations typical in old and recently established garden beds. Using tap water (TW), soil water retention within 0-10 kPa matric suction was found to be significantly lower and hysteresis significantly higher for the loose soil than the field or compacted soil. Measured values of K s with TW were in the order loose >field >compacted soil, but these values were reduced to 5-16% when GW was used. Further measurements of K s with application of TW to soil cores which had been previously saturated with GW, greater reduction in K s occurred with K s →0 for the compacted soil. A comparison of the quality of GW with TW as irrigation water indicated an approx. increase in pH of GW by 3 pH units over TW, two-fold increase in EC, 5-fold increase in Na concentration and a 10-fold increase in Sodium Adsorption Ratio (SAR). Measurements of drainage water during the water flux measurements for K s showed that the soil was able to reduce pH and EC of infiltrating water, store some salts (Na and K) and released Ca and Mg from soil so that the quality of drainage water improved substantially to become similar in quality to TW. Thus, long-term use of untreated laundry greywater may reduce salt contamination of groundwater, but predispose soils to future environmental hazards from excess sodium accumulation.

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Section: Introductionmentioning

confidence: 99%

Reuse of laundry greywater as affected by its interaction with saturated soil

Misra

Sivongxay

2009

Journal of Hydrology

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“…It could be related to the different soil infiltration ability, which is a key to salinity control (Amer, 2010). The poor hydraulic properties of the silt loam could impede irrigation water penetration further to cause salt accumulation at the upper zone (Miyamoto and Chacon, 2006; Ganjegunte et al, 2011). While remarkable increases occurred in the bottom layer salinity (40–60 cm EC) of sandy loam soil due to higher soil permeability, the salt accretion was alleviated to some extent in the upper layers.…”

Section: Discussionmentioning

confidence: 99%

Soil Salinity and Maize Growth under Cycle Irrigation in Coastal Soils

Huang

Zhang

Sheng³

et al. 2019

Agronomy Journal

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The coastal regions of eastern China have substantial potential for agricultural production. Freshwater scarcity makes the utilization of plentiful brackish water a vital issue in this area. We aim to assess the effects of cycle irrigation with fresh and brackish water on soil salinity and maize (Zea mays L.). A pot experiment was performed with two typical coastal soils (sandy loam and silt loam) and one local maize cultivar. The maize growing season was divided into three phases (development, mid‐, and later stage). Cycle irrigation was conducted using brackish water (5 g NaCl L−1) during one stage and freshwater for the remaining stages. Cycle irrigation using brackish water at the development stage caused both osmotic and ionic stresses on the maize, leading to significantly‐reduced evapotranspiration (ET), increased stem and leaf Na+/K+ ratio, and stunted growth. The decline of kernel number and 100‐grain weight resulted in severe yield loss. Cycle irrigation with brackish water at the mid‐stage induced less adverse effects on crop growth, while the decrease in kernel number remarkably reduced the yield. Cycle irrigation with brackish water at the later stage minimized the impacts of saline irrigation on soil salinity and maize productivity. Nonetheless, salt leaching by off‐season rainfall and low salinity water and soil salt monitoring should be considered before the next season. Compared to sandy loam soil, silt loam displayed higher soil salinization, and lower maize growth and yield. Additional field research is recommended to facilitate the reliable use of coastal soil and water resources. Core Ideas Cycle irrigation with fresh and brackish water in two coastal soils is studied. Cycle irrigation using brackish water is effective when freshwater is scarce. Brackish water is proposed to be used at maize later reproductive stages. Sandy loam soil is preferable for cycle irrigation compare to silt loam soil.

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“…Based on the GI and the CR values and the findings of available studies, this paper classifies spatial heterogeneity into three grades and concentration into six grades. According to the research protocols of scholars such as Zhao [100], Miyamoto [101], Bain [102], and Li [103] and the classification criteria of the United Nations Development Program, a classification criterion for spatial differentiation and concentration are proposed in this paper (Table 1). Created by the Boston Consulting Group in the 1970s, BCG is a method for analyzing and optimizing existing business portfolios that is mainly applied in the fields of business management and economics.…”

Section: Spatial Heterogeneity and Agglomeration Methods: CV Gi Cr Hhimentioning

confidence: 99%

A Dynamic Performance and Differentiation Management Policy for Urban Construction Land Use Change in Gansu, China

Zhang

Zhao

et al. 2022

Land

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Making efforts to promote rationalized urban construction land change, distribution, allocation, and its performance is the core task of territory spatial planning and a complex issue that the government must face and solve. Based on the Boston Consulting Group matrix, a decoupling model, and a GIS tool, this paper constructs a new tool that integrates “dynamic analysis + performance evaluation + policy design” for urban construction land. We reached the following findings from an empirical study of Gansu, China: (1) Urban construction land shows diversified changes, where expansion is dominant and shrink cannot be ignored. (2) Most cities are in the non-ideal state of LH (Low-High) and LL (Low-Low), with a small number in the state of HH (High-High) and HL (High-Low). (3) Urban construction land change and population growth, economic development, and income increase are in a discordant relationship, mostly in strong negative decoupling and expansive negative decoupling. (4) The spatial heterogeneity of urban construction land change and its performance are at a high level, and they show a slow upward trend. Additionally, the cold and the hot spots show obvious spatial clustering characteristics, and the spatial pattern of different indexes is different to some extent. (5) It is suggested that in territory spatial planning Gansu should divide the space into four policy areas—incremental, inventory, a reduction development policy area, and a transformation leading policy area—to implement differentiated management policies and to form a new spatial governance system of “control by zoning and management by class.” The change of urban construction land, characterized by dynamics and complexity, is a direct mapping of the urban growth process. The new tools constructed in this paper will help to reveal the laws of urban development and to improve the accuracy of territory spatial planning in the new era. They are of great theoretical significance and practical value for promoting high-quality and sustainable urban development.

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Soil salinity of urban turf areas irrigated with saline water

Cited by 13 publications

References 9 publications

Reuse of laundry greywater as affected by its interaction with saturated soil

Reuse of laundry greywater as affected by its interaction with saturated soil

Soil Salinity and Maize Growth under Cycle Irrigation in Coastal Soils

A Dynamic Performance and Differentiation Management Policy for Urban Construction Land Use Change in Gansu, China

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