Research on chemical characteristics of soil salt crusts with saline groundwater drip-irrigation in the Tarim Desert Highway ShelterbeltReportar como inadecuado




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SpringerPlus

, 2:S5

First Online: 11 December 2013

Abstract

Soil salt crusts are special layers at soil surface which are widely distributed in the Trim Desert Highway Shelterbelt under drip-irrigation with high salinity groundwater. In order to reveal annual variation of their chemical characteristics, soil salt crusts in shelterbelt of different ages in hinterland of the Taklimakan Desert were sampled. SOM, total salt, inions and pH were analyzed. Following results were obtained. SOM of salt crusts increased with the shelterbelt ages, but increasing trend became lower gradually. Total salt, ions, and pH of salt crusts reduced gradually with the shelterbelt ages. Total salt of salt crusts in shelterbelt of different ages was much higher than shifting sandy land. Ions were higher than shifting sandy land, Cl, Na, and SO4 increased more obvious, then Mg, K, Ca and HCO3, CO3 was little and nearly had no change. pH was all alkaline, pH of salt crusts in shelterbelt of 11 years was even lower than shifting sandy land. We can include that the quality of shallow soil 0~30 cm in the Trim Desert Highway Shelterbelt becomes better gradually.

KeywordsChemical characteristics Soil salt crusts Saline groundwater drip-irrigation Trim Desert Highway Shelterbelt  Download fulltext PDF



Autor: Jianguo Zhang - Xinwen Xu - Jiaqiang Lei - Shengyu Li

Fuente: https://link.springer.com/







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