Five-Year Experimental Study on Effectiveness and Sustainability of a Dry Drainage System for Controlling Soil Salinity
The dry drainage system (DDS) is an alternative technique for controlling salinization. To quantify its role in soil salinity control, a five-year field observation from 2007 to 2011 was completed in a 2900 ha experimental plot in Yonglian Experimental Station, Hetao Irrigation District, China. Resu...
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description | The dry drainage system (DDS) is an alternative technique for controlling salinization. To quantify its role in soil salinity control, a five-year field observation from 2007 to 2011 was completed in a 2900 ha experimental plot in Yonglian Experimental Station, Hetao Irrigation District, China. Results showed that the groundwater table depth in the fallow areas quickly responded to the lateral recharge from the surrounding croplands during irrigation events. The groundwater electrical conductivity (GEC) of fallow areas increased from 5 mS·cm−1 to 15 mS·cm−1, whereas the GEC below croplands produced small fluctuations. The analysis of water and salt balance showed that the excess water that moved to fallow was roughly four times that moved by an artificial drainage system and with 7.7 times the corresponding salt. The fallow areas act as a drainage repository to receive excess water and salt from surrounding irrigated croplands. Slight salt accumulation occurred in irrigated croplands and salts accumulated, with an accelerating trend over the final two years. The evaporation capability weakened, partly due to the salt crust in the topsoil, and the decrease in soil permeability in the soil column, which was almost impermeable to water. Using halophytes may be an effective method to remove salts that have accumulated in fallow areas, having great economic and ecological value. A DDS may be effective and sustainable in situations where the fallow areas can sustain an upward capillary flux from planted halophytes. |
doi_str_mv | 10.3390/w11010111 |
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To quantify its role in soil salinity control, a five-year field observation from 2007 to 2011 was completed in a 2900 ha experimental plot in Yonglian Experimental Station, Hetao Irrigation District, China. Results showed that the groundwater table depth in the fallow areas quickly responded to the lateral recharge from the surrounding croplands during irrigation events. The groundwater electrical conductivity (GEC) of fallow areas increased from 5 mS·cm−1 to 15 mS·cm−1, whereas the GEC below croplands produced small fluctuations. The analysis of water and salt balance showed that the excess water that moved to fallow was roughly four times that moved by an artificial drainage system and with 7.7 times the corresponding salt. The fallow areas act as a drainage repository to receive excess water and salt from surrounding irrigated croplands. Slight salt accumulation occurred in irrigated croplands and salts accumulated, with an accelerating trend over the final two years. The evaporation capability weakened, partly due to the salt crust in the topsoil, and the decrease in soil permeability in the soil column, which was almost impermeable to water. Using halophytes may be an effective method to remove salts that have accumulated in fallow areas, having great economic and ecological value. A DDS may be effective and sustainable in situations where the fallow areas can sustain an upward capillary flux from planted halophytes.</description><identifier>ISSN: 2073-4441</identifier><identifier>EISSN: 2073-4441</identifier><identifier>DOI: 10.3390/w11010111</identifier><language>eng</language><publisher>MDPI AG</publisher><subject>Agricultural land ; Analysis ; Environmental sustainability ; Permeability ; Soils, Salts in</subject><ispartof>Water (Basel), 2019-01, Vol.11 (1), p.111</ispartof><rights>COPYRIGHT 2019 MDPI AG</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c303t-e946e93bd232641d1643ba88bc395544fa76b9bb8b79d8248cdf5157e28d9eb63</citedby><cites>FETCH-LOGICAL-c303t-e946e93bd232641d1643ba88bc395544fa76b9bb8b79d8248cdf5157e28d9eb63</cites><orcidid>0000-0003-0667-3604</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Wang, Changshu</creatorcontrib><creatorcontrib>Wu, Jingwei</creatorcontrib><creatorcontrib>Zeng, Wenzhi</creatorcontrib><creatorcontrib>Zhu, Yan</creatorcontrib><creatorcontrib>Huang, Jiesheng</creatorcontrib><title>Five-Year Experimental Study on Effectiveness and Sustainability of a Dry Drainage System for Controlling Soil Salinity</title><title>Water (Basel)</title><description>The dry drainage system (DDS) is an alternative technique for controlling salinization. To quantify its role in soil salinity control, a five-year field observation from 2007 to 2011 was completed in a 2900 ha experimental plot in Yonglian Experimental Station, Hetao Irrigation District, China. Results showed that the groundwater table depth in the fallow areas quickly responded to the lateral recharge from the surrounding croplands during irrigation events. The groundwater electrical conductivity (GEC) of fallow areas increased from 5 mS·cm−1 to 15 mS·cm−1, whereas the GEC below croplands produced small fluctuations. The analysis of water and salt balance showed that the excess water that moved to fallow was roughly four times that moved by an artificial drainage system and with 7.7 times the corresponding salt. The fallow areas act as a drainage repository to receive excess water and salt from surrounding irrigated croplands. Slight salt accumulation occurred in irrigated croplands and salts accumulated, with an accelerating trend over the final two years. The evaporation capability weakened, partly due to the salt crust in the topsoil, and the decrease in soil permeability in the soil column, which was almost impermeable to water. Using halophytes may be an effective method to remove salts that have accumulated in fallow areas, having great economic and ecological value. A DDS may be effective and sustainable in situations where the fallow areas can sustain an upward capillary flux from planted halophytes.</description><subject>Agricultural land</subject><subject>Analysis</subject><subject>Environmental sustainability</subject><subject>Permeability</subject><subject>Soils, Salts in</subject><issn>2073-4441</issn><issn>2073-4441</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNpNUMFKAzEUXETBUnvwD3L1sDXZZHeTY6mtCgUP1YOnJdm8lMg2KUlq3b83UhHf8HjDMPMOUxS3BM8pFfj-RAjOIOSimFS4pSVjjFz-49fFLMYPnIcJzms8KU5r-wnlO8iAVl8HCHYPLskBbdNRj8g7tDIG-pRNDmJE0mm0PcYkrZPKDjZlj0ESPYQx74-6A7QdY4I9Mj6gpXcp-GGwboe23ua_MvMcuymujBwizH7vtHhbr16XT-Xm5fF5udiUPcU0lSBYA4IqXdGqYUSThlElOVc9FXXNmJFto4RSXLVC84rxXpua1C1UXAtQDZ0W8_PfnRygs874FGSfoWFve-_A2KwvWkEqTjlmOXB3DvTBxxjAdIdcigxjR3D303L31zL9Bllxb8M</recordid><startdate>20190110</startdate><enddate>20190110</enddate><creator>Wang, Changshu</creator><creator>Wu, Jingwei</creator><creator>Zeng, Wenzhi</creator><creator>Zhu, Yan</creator><creator>Huang, Jiesheng</creator><general>MDPI AG</general><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0003-0667-3604</orcidid></search><sort><creationdate>20190110</creationdate><title>Five-Year Experimental Study on Effectiveness and Sustainability of a Dry Drainage System for Controlling Soil Salinity</title><author>Wang, Changshu ; Wu, Jingwei ; Zeng, Wenzhi ; Zhu, Yan ; Huang, Jiesheng</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c303t-e946e93bd232641d1643ba88bc395544fa76b9bb8b79d8248cdf5157e28d9eb63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Agricultural land</topic><topic>Analysis</topic><topic>Environmental sustainability</topic><topic>Permeability</topic><topic>Soils, Salts in</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Changshu</creatorcontrib><creatorcontrib>Wu, Jingwei</creatorcontrib><creatorcontrib>Zeng, Wenzhi</creatorcontrib><creatorcontrib>Zhu, Yan</creatorcontrib><creatorcontrib>Huang, Jiesheng</creatorcontrib><collection>CrossRef</collection><jtitle>Water (Basel)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Changshu</au><au>Wu, Jingwei</au><au>Zeng, Wenzhi</au><au>Zhu, Yan</au><au>Huang, Jiesheng</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Five-Year Experimental Study on Effectiveness and Sustainability of a Dry Drainage System for Controlling Soil Salinity</atitle><jtitle>Water (Basel)</jtitle><date>2019-01-10</date><risdate>2019</risdate><volume>11</volume><issue>1</issue><spage>111</spage><pages>111-</pages><issn>2073-4441</issn><eissn>2073-4441</eissn><abstract>The dry drainage system (DDS) is an alternative technique for controlling salinization. To quantify its role in soil salinity control, a five-year field observation from 2007 to 2011 was completed in a 2900 ha experimental plot in Yonglian Experimental Station, Hetao Irrigation District, China. Results showed that the groundwater table depth in the fallow areas quickly responded to the lateral recharge from the surrounding croplands during irrigation events. The groundwater electrical conductivity (GEC) of fallow areas increased from 5 mS·cm−1 to 15 mS·cm−1, whereas the GEC below croplands produced small fluctuations. The analysis of water and salt balance showed that the excess water that moved to fallow was roughly four times that moved by an artificial drainage system and with 7.7 times the corresponding salt. The fallow areas act as a drainage repository to receive excess water and salt from surrounding irrigated croplands. Slight salt accumulation occurred in irrigated croplands and salts accumulated, with an accelerating trend over the final two years. The evaporation capability weakened, partly due to the salt crust in the topsoil, and the decrease in soil permeability in the soil column, which was almost impermeable to water. Using halophytes may be an effective method to remove salts that have accumulated in fallow areas, having great economic and ecological value. A DDS may be effective and sustainable in situations where the fallow areas can sustain an upward capillary flux from planted halophytes.</abstract><pub>MDPI AG</pub><doi>10.3390/w11010111</doi><orcidid>https://orcid.org/0000-0003-0667-3604</orcidid><oa>free_for_read</oa></addata></record> |
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source | MDPI - Multidisciplinary Digital Publishing Institute; EZB-FREE-00999 freely available EZB journals |
subjects | Agricultural land Analysis Environmental sustainability Permeability Soils, Salts in |
title | Five-Year Experimental Study on Effectiveness and Sustainability of a Dry Drainage System for Controlling Soil Salinity |
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