IMHE OpenIR  > 成都山地所知识仓储(2009年以前)
冻融季节苏打盐渍土的水盐变化规律
Alternative TitleVariation of water and salinity in sodic saline soil during frozen-thawing season
罗金明; 邓伟; 张晓平; 李秀军; 孙广友
Corresponding Author罗金明
2008
Source Publication水科学进
ISSN1001-6791
Volume19Issue:4Pages:559-566
Abstract通过野外定位观测和室内分析,探讨了冻融季节的微域尺度(32m长的横剖面)苏打盐渍土的水分和盐分的变化规律。结果表明:冻结期大量地下水迁移并储存在盐化草甸土的冻层中,同时地下水位埋深迅速从1.2m下降到2.5m以下;苏打盐化草甸土冻结层的含水率明显增加,其中30~40cm土层的含水率变化最明显(从冻结前的20%增加到50%)。苏打碱土冻层的含水率增量不明显,但盐分显著增加,其中白盖苏打碱土表层的盐分增量幅度达80%。盐分变化主要表现为苏打盐渍土表层HCO3^-、CO3^2-、SO4^2-以及Na^+的增加,大量盐分表聚使消融期土壤的盐渍化程度不断加重。
Other Abstract通过野外定位观测和室内分析,探讨了冻融季节的微域尺度(32 m长的横剖面)苏打盐渍土的水分和盐分的变化规律。结果表明:冻结期大量地下水迁移并储存在盐化草甸土的冻层中,同时地下水位埋深迅速从1.2 m下降到2.5 m以下;苏打盐化草甸土冻结层的含水率明显增加,其中30~40 cm土层的含水率变化最明显(从冻结前的20%增加到50%)。苏打碱土冻层的含水率增量不明显,但盐分显著增加,其中白盖苏打碱土表层的盐分增量幅度达80%。盐分变化主要表现为苏打盐渍土表层HCO3-、CO32-、SO42-以及Na+的增加,大量盐分表聚使消融期土壤的盐渍化程度不断加重。 
; By the in-situ observation and analysis in the laboratory , the variation of water and salinity in micro scale ( a 32- m-long transect) of sodic saline soil region are discussed during the frozen-thawing season. Results show that vast groundwater is transported and stored in the frozen layer of saline meadow soil in frozen period, which results in the significant enriched soil moisture, the moisture at 30- 40 cm layer increases most obviously (increase from 20% before frozen to 50%), and the groundwater level descends abruptly from 1.2 m to 2.5 m below . The enrichment of soil moisture in sodic saline soil isn't significant ; nevertheless, salinity is enriched significantly, the enrichment degree in white crust sodic alkaline soil reaches 80 %. The variation of salinity is mainly composed of the increased content of bicarbonate, carbonate, sulfate and sodium. The vast salinity accumulation in surface layer results in the graduall aggravated saline degree during thawing season.
Keyword冻融作用 苏打盐渍土 水盐迁移 变化规律 微域格局
Indexed ByEI
Language英语
CSCD IDCSCD:3354297
Funding Organization中国科学院知识创新重大项目(KZCX1-SW-19-02)
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/6801
Collection成都山地所知识仓储(2009年以前)
山区发展研究中心
Corresponding Author罗金明
Recommended Citation
GB/T 7714
罗金明,邓伟,张晓平,等. 冻融季节苏打盐渍土的水盐变化规律[J]. 水科学进,2008,19(4):559-566.
APA 罗金明,邓伟,张晓平,李秀军,&孙广友.(2008).冻融季节苏打盐渍土的水盐变化规律.水科学进,19(4),559-566.
MLA 罗金明,et al."冻融季节苏打盐渍土的水盐变化规律".水科学进 19.4(2008):559-566.
Files in This Item:
File Name/Size DocType Version Access License
冻融季节苏打盐渍土的水盐变化规律_罗金明(806KB) 开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[罗金明]'s Articles
[邓伟]'s Articles
[张晓平]'s Articles
Baidu academic
Similar articles in Baidu academic
[罗金明]'s Articles
[邓伟]'s Articles
[张晓平]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[罗金明]'s Articles
[邓伟]'s Articles
[张晓平]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 冻融季节苏打盐渍土的水盐变化规律_罗金明.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.