The effects of soil salt crusts on soil evaporation and chemical changes in different ages of Taklimakan Desert Shelterbelts

Understanding soil evaporation in reforestation processes in an area of extreme drought is important. We examined the effects of drip-irrigated, high-salinity groundwater on the formation of soil salt crusts and subsequent soil evaporation in the Taklimakan Desert Highway Shelterbelt. Soil evaporati...

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Autores principales:	Zhang,J.G, Xu,X.W, Lei,J.Q, Li,S.Y, Hill,R.L, Zhao,Y
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2013
Materias:	Saline groundwater drip irrigation soil salt crusts chemical properties evaporation artificial shelterbelt
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000400020
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spelling	oai:scielo:S0718-951620130004000202014-01-29The effects of soil salt crusts on soil evaporation and chemical changes in different ages of Taklimakan Desert ShelterbeltsZhang,J.GXu,X.WLei,J.QLi,S.YHill,R.LZhao,Y Saline groundwater drip irrigation soil salt crusts chemical properties evaporation artificial shelterbelt Understanding soil evaporation in reforestation processes in an area of extreme drought is important. We examined the effects of drip-irrigated, high-salinity groundwater on the formation of soil salt crusts and subsequent soil evaporation in the Taklimakan Desert Highway Shelterbelt. Soil evaporation was measured using micro-lysimeters (MLS, 20 cm in length x 10 cm in diameter), and chemical characteristics, including SOM, total salts, ion composition and pH, were analyzed. The results showed that the inhibition efficiency of salt crusts on soil evaporation decreased from the surface to the lower soil layers. Following irrigation, the inhibition efficiency was 33.0% in the shelterbelt, which was much higher than the 13.8% observed for the bare soil. Total salt content and ion contents (Cl¾, Na+, and SO4²>) were much higher for the soil salt crusts than for shifting sandy soils, while the contents of other ions (Mg²+, K+, Ca²+, HCO3>, and CO3²>) were very similar. The total salt content and ion composition of the salt crusts increased during the first 2 years of shelterbelt age, and decreased from 2 to 5 years. With the increasing age of the shelterbelts, the SOM of the salt crusts increased, whereas the total salts and pH decreased. We concluded that the formation of soil salt crusts results in reduced soil evaporation and the soil chemical condition functioned better for growth of the Taklimakan Desert Highway Shelterbelt.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.13 n.4 20132013-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000400020en10.4067/S0718-95162013005000080
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Saline groundwater drip irrigation soil salt crusts chemical properties evaporation artificial shelterbelt
spellingShingle	Saline groundwater drip irrigation soil salt crusts chemical properties evaporation artificial shelterbelt Zhang,J.G Xu,X.W Lei,J.Q Li,S.Y Hill,R.L Zhao,Y The effects of soil salt crusts on soil evaporation and chemical changes in different ages of Taklimakan Desert Shelterbelts
description	Understanding soil evaporation in reforestation processes in an area of extreme drought is important. We examined the effects of drip-irrigated, high-salinity groundwater on the formation of soil salt crusts and subsequent soil evaporation in the Taklimakan Desert Highway Shelterbelt. Soil evaporation was measured using micro-lysimeters (MLS, 20 cm in length x 10 cm in diameter), and chemical characteristics, including SOM, total salts, ion composition and pH, were analyzed. The results showed that the inhibition efficiency of salt crusts on soil evaporation decreased from the surface to the lower soil layers. Following irrigation, the inhibition efficiency was 33.0% in the shelterbelt, which was much higher than the 13.8% observed for the bare soil. Total salt content and ion contents (Cl¾, Na+, and SO4²>) were much higher for the soil salt crusts than for shifting sandy soils, while the contents of other ions (Mg²+, K+, Ca²+, HCO3>, and CO3²>) were very similar. The total salt content and ion composition of the salt crusts increased during the first 2 years of shelterbelt age, and decreased from 2 to 5 years. With the increasing age of the shelterbelts, the SOM of the salt crusts increased, whereas the total salts and pH decreased. We concluded that the formation of soil salt crusts results in reduced soil evaporation and the soil chemical condition functioned better for growth of the Taklimakan Desert Highway Shelterbelt.
author	Zhang,J.G Xu,X.W Lei,J.Q Li,S.Y Hill,R.L Zhao,Y
author_facet	Zhang,J.G Xu,X.W Lei,J.Q Li,S.Y Hill,R.L Zhao,Y
author_sort	Zhang,J.G
title	The effects of soil salt crusts on soil evaporation and chemical changes in different ages of Taklimakan Desert Shelterbelts
title_short	The effects of soil salt crusts on soil evaporation and chemical changes in different ages of Taklimakan Desert Shelterbelts
title_full	The effects of soil salt crusts on soil evaporation and chemical changes in different ages of Taklimakan Desert Shelterbelts
title_fullStr	The effects of soil salt crusts on soil evaporation and chemical changes in different ages of Taklimakan Desert Shelterbelts
title_full_unstemmed	The effects of soil salt crusts on soil evaporation and chemical changes in different ages of Taklimakan Desert Shelterbelts
title_sort	effects of soil salt crusts on soil evaporation and chemical changes in different ages of taklimakan desert shelterbelts
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000400020
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The effects of soil salt crusts on soil evaporation and chemical changes in different ages of Taklimakan Desert Shelterbelts

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