Influence of super absorbent polymer on soil water retention, seed germination and plant survivals for rocky slopes eco-engineering

To improve the utilization of water resources on rocky slopes eco-engineering, super absorbent polymer (SAP) with the function of water retention was applied. Super absorbent polymer in three levels, 0.15%, 0.3% and 0.45% were mixed with sandy loam soil. This study was aimed to evaluate the saturated water content, evaporation rate and water holding capability of SAP treated soils, determine seed germination rate and plant survivals in soil with SAP by absorbing and spraying experiments. The addition of SAP to the sandy loam soil resulted in a significant increase of the soil water retention compared to the controls. Also, the seed germination was significantly higher in SAP amended soil than in the soil without SAP, survival times of grass and woody were prolonged under water stress. 0.30% SAP treatment was the optimum selection for sandy loam soil improvement on steep rocky slopes. These studies indicated that SAP with good water retention properties, was very effective in enhancing water uptake and utilization of water for plants growth, and could be expected to have wide potential applications in rocky slopes eco-engineering.

[1]  Aloys Hüttermann,et al.  Application of Superabsorbent Polymers for Improving the Ecological Chemistry of Degraded or Polluted Lands , 2009 .

[2]  K. Kabiri,et al.  Superabsorbent Polymer Materials: A Review , 2008 .

[3]  Peter J. Shouse,et al.  Relationship between the Hydraulic Conductivity Function and the Particle‐Size Distribution , 2003 .

[4]  Lei Xu,et al.  Porosity change model for watered super absorbent polymer-treated soil , 2010 .

[5]  M. Caldwell,et al.  Hydraulic lift: Substantial nocturnal water transport between soil layers by Artemisia tridentata roots , 1987, Oecologia.

[6]  Liuwei,et al.  Polyacrylamide molecular formulation effects on erosion control of disturbed soil on steep rocky slopes , 2011 .

[7]  M. Lallemant,et al.  Absorption and desorption of liquid water by a superabsorbent polymer: Effect of polymer in the drying of the soil and the quality of certain plants , 2002 .

[8]  Shaoyu Lü,et al.  Novel Slow-Release Multielement Compound Fertilizer with Hydroscopicity and Moisture Preservation , 2010 .

[9]  Aloys Hüttermann,et al.  Effects of Hydrogel Amendment to Different Soils on Plant Available Water and Survival of Trees under Drought Conditions , 2010 .

[10]  A. Ravve,et al.  Principles of Polymer Chemistry , 1995 .

[11]  C. Kıncal,et al.  Abandoned stone quarries in and around the Izmir city centre and their geo-environmental impacts¿Turkey , 2004 .

[12]  Hai-long Sun,et al.  Polyacrylamide molecular formulation effects on erosion control of disturbed soil on steep rocky slopes , 2011, Canadian Journal of Soil Science.

[13]  Zhengquan Jiang,et al.  Runoff-driven nitrogen and phosphorus dynamics of substrate material for rocky slope eco-engineering , 2013 .

[14]  The effect of a soil-amended hydrogel on the establishment of Pinus elliottii × caribaea rooted cuttings on the Zululand coastal sands. , 2000 .

[15]  D. Warrington,et al.  Water retention and hydraulic conductivity of cross-linked polyacrylamides in sandy soils , 2007 .

[16]  A. Hüttermann,et al.  Addition of hydrogels to soil for prolonging the survival of Pinus halepensis seedlings subjected to drought , 1999 .

[17]  J. A. Koupaei,et al.  EFFECTS OF A HYDROPHILIC POLYMER ON THE FIELD PERFORMANCE OF AN ORNAMENTAL PLANT (CUPRESSUS ARIZONICA) UNDER REDUCED IRRIGATION REGIMES , 2006 .

[18]  J. Sperry,et al.  Influence of soil texture on hydraulic properties and water relations of a dominant warm-desert phreatophyte. , 2006, Tree physiology.

[19]  Peng Chen,et al.  Synthesis of superabsorbent polymers by irradiation and their applications in agriculture , 2004 .

[20]  W. Doane,et al.  Influence of starch granule swelling on graft copolymer composition. A comparison of monomers , 1971 .

[21]  J. Theron,et al.  The effect of a soil-amended hydrogel on the establishment of a Eucalyptus grandis clone on a sandy clay loam soil in Zululand during winter , 2002 .

[22]  A. Hüttermann,et al.  Amending Soils with Hydrogels Increases the Biomass of Nine Tree Species under Non-water Stress Conditions , 2009 .

[23]  H. A. El-Rehim,et al.  Radiation synthesis of hydrogels to enhance sandy soils water retention and increase plant performance , 2004 .

[24]  A. M. Al-Darby.  The hydraulic properties of a sandy soil treated with gel-forming soil conditioner , 1996 .