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Influence of drip irrigation level on salt leaching and vegetation growth during reclamation of coastal saline soil having an imbedded gravel-sand layer
Sun, Jiaxia1; Kang, Yaohu1,2; Wan, Shuqin1; Hu, Wei3
2017-11-01
Source PublicationECOLOGICAL ENGINEERING
ISSN0925-8574
Volume108Pages:59-69
Corresponding AuthorWan, Shuqin(wans@igsnrr.ac.cn)
AbstractWater resources are very scarce in coastal saline areas; as such, water-saving irrigation regimes are needed. Drip irrigation combined with an imbedded gravel-sand layer has been proved to be a good method for constructing ecological landscapes in coastal saline soils. A 3-yr experiment (2009-2011) was conducted to evaluate the effects of different drip irrigation amounts controlled by soil matric potentials (SMP) (-5, -10, -15, -20, and -25 kPa) on soil salinity and landscape species growth in coastal saline soils with an imbedded gravel-sand layer in Northeast China. The mean electrical conductivity of the saturated paste extract (ECe) of the soil profile significantly decreased to less than 4 dS m(-1) for SMP treatments higher than -20 kPa after two months, then remained at the low level. No significant differences in the extent of desalinization occurred among the drip irrigation treatments based on -5, -10, -15, and -20 kPa SMP. The -20 kPa treatment could reduce irrigation water usage by 150-610 mm in the first three years of reclamation compared with higher SMPs (-5, -10, and -15 kPa). Variations of pH of the saturated paste extract (pH(e)) in the soil profile were relatively moderate. After the 3-yr experiment, the landscape species that are moderately sensitive or sensitive to salt grew well, with an average survival rate of 72%. To balance salt leaching and water saving, a SMP of -20 kPa could be used to guide landscape construction in the first three years of reclamation.
KeywordElectrical conductivity of the saturated paste extract pH of the saturated paste extracts Soil matric potential Desalinization Landscape species
DOI10.1016/j.ecoleng.2017.08.004
WOS KeywordHELIANTHUS-ANNUUS L. ; SODIC SOIL ; NORTH CHINA ; HYDRAULIC CONDUCTIVITY ; WATER IRRIGATION ; ION ACCUMULATION ; RECLAIMED WATER ; EASTERN CHINA ; MSW COMPOST ; SE SPAIN
Indexed BySCI
Language英语
Funding ProjectSpecial Fund for Forest Scientific Research in the Public Welfare[201504402] ; National Science Foundation for Young Scientists in China[51409126] ; National Key R & D Program of China[2016YFC0501304] ; Frontier Science Key Research Project of Chinese Academy of Sciences[QYZDJ-SSW-DQC028]
Funding OrganizationSpecial Fund for Forest Scientific Research in the Public Welfare ; National Science Foundation for Young Scientists in China ; National Key R & D Program of China ; Frontier Science Key Research Project of Chinese Academy of Sciences
WOS Research AreaEnvironmental Sciences & Ecology ; Engineering
WOS SubjectEcology ; Engineering, Environmental ; Environmental Sciences
WOS IDWOS:000412127500008
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/62101
Collection中国科学院地理科学与资源研究所
Corresponding AuthorWan, Shuqin
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 101408, Peoples R China
3.New Zealand Inst Plant & Food Res Ltd, Private Bag 4704, Christchurch 8140, New Zealand
Recommended Citation
GB/T 7714
Sun, Jiaxia,Kang, Yaohu,Wan, Shuqin,et al. Influence of drip irrigation level on salt leaching and vegetation growth during reclamation of coastal saline soil having an imbedded gravel-sand layer[J]. ECOLOGICAL ENGINEERING,2017,108:59-69.
APA Sun, Jiaxia,Kang, Yaohu,Wan, Shuqin,&Hu, Wei.(2017).Influence of drip irrigation level on salt leaching and vegetation growth during reclamation of coastal saline soil having an imbedded gravel-sand layer.ECOLOGICAL ENGINEERING,108,59-69.
MLA Sun, Jiaxia,et al."Influence of drip irrigation level on salt leaching and vegetation growth during reclamation of coastal saline soil having an imbedded gravel-sand layer".ECOLOGICAL ENGINEERING 108(2017):59-69.
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