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Case Reports
. 2013 Dec 11;2(Suppl 1):S5.
doi: 10.1186/2193-1801-2-S1-S5. eCollection 2013.

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

Jianguo Zhang  1 , Xinwen Xu  2 , Jiaqiang Lei  2 , Shengyu Li  2
Affiliations
Case Reports

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

Jianguo Zhang et al. Springerplus. .

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 (2-) increased more obvious, then Mg(2+), K(+), Ca(2+) and HCO3 (-), CO3 (2-) 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.

Keywords: Chemical characteristics; Saline groundwater drip-irrigation; Soil salt crusts; Trim Desert Highway Shelterbelt.

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Figures

Figure 1
Figure 1
Map showing the study area.
Figure 2
Figure 2
SOM analysis of soil salt crusts in shelterbelt of different age.
Figure 3
Figure 3
Analysis of total salt of soil salt crusts in shelterbelt of different age.
Figure 4
Figure 4
Analysis of ions contents of salt crusts in shelterbelts of different age.
See this image and copyright information in PMC

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