干旱区生态环境知识资源中心(Arid): 焉耆盆地绿洲灌区生态安全下的地下水埋深合理界定

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	焉耆盆地绿洲灌区生态安全下的地下水埋深合理界定
其他题名	Determination of the Ecological Groundwater Depth Considering Ecological Integrity over Oasis Irrigation Areas in the Yanqi Basin
	王水献; 吴彬; 杨鹏年; 李霞; 董新光
来源期刊	资源科学
ISSN	1007-7588
出版年	2011
卷号	33 期号:3 页码:422-430
中文摘要	在西北干旱地区,地下水埋深与生态环境的关系十分密切. 焉耆盆地是新疆重要的绿洲农业区, 但该区生态环境脆弱,生态环境对地下水的依赖作用十分显著,同时该区又担负着向塔里木河下游输水的重任, 如何实现该地区地下资源可持续开发模式,是一个急需探讨的现实问题. 本文基于大量的野外调查和综合分析的基础上, 通过对焉耆盆地的地下水埋深与土壤盐碱化、植被生长与潜水蒸发的相互关系的研究, 从确保绿洲灌区生态安全角度提出了地下水生态埋深的概念, 并阐述了其内涵, 确定绿洲灌区适宜生态埋深为3.0~4.0m, 即适合林地生长的适宜深度与极限潜水蒸发深度的区间. 地下水生态埋深的确定, 对于估算生态用水、防治土地盐渍化和沙漠化提供了科学依据, 也为焉耆盆地地下水合理开采与水盐调控提供理论支撑
英文摘要	In arid areas, the buried depth of groundwater and salt content jointly affect the growth of natural vegetation. Salts dissolved in groundwater can be carried upward by capillary water and accumulated in top soil if the groundwater buried depth is too shallow under violent evaporation conditions. As such, soil salinization and salt stress often occur. Upward capillary water cannot reach the rhizosphere of plants if the groundwater buried depth is too deep. Therefore, the growth of vegetation is in part determined by the groundwater buried depth, and land desertification occurs. The Yanqi basin, located in northwestern China, has been used for agriculture for a long time. Extensive agricultural activities in the basin have started since the 1950’s with flood irrigation techniques. The groundwater table has been raised since then as a consequence of the absence of an effective drainage system. In terms of the field data in 2007, the groundwater depths in the basin ranged generally between 0.5 m and 3 m.As a result of the shallow groundwater table and high evaporation, soil salinization has become one of the most serious environmental problems in this region due to the groundwater being severely contaminated by salinization. Therefore, agriculture is only feasible with full irrigation. The overall environment of the Yanqi basin has been incrementally degrading because of unreasonable water resources development during the past 60 years, especially irrigation with large amount of surface water and with little groundwater. This has raised the groundwater level and led increasingly serious soil salinization. Based on field investigations and synthetic analysis, the paper discusses the relationship between the buried depth of groundwater table and soil salinization, vegetation growth, and evaporation. Subsequently,a concept of the buried depth of eco-security on groundwater table was put forth from the perspective of ecological safety across oasis irrigation areas. The buried depths of eco-safety on groundwater table range between 3~4 m in oasis irrigation areas of the Yanqi basin. This range is considered suitable for forest growth and limiting evaporation. The groundwater ecological depth was determined for the estimation of ecological water use, and preventing land desertification and salinization. This study provides a basis for reasonable groundwater exploitation and effective salinity control in the Yanqi basin
中文关键词	地下水生态埋深 ; 生态安全 ; 绿洲灌区, 天然植被 ; 焉耆盆地
英文关键词	Ecological groundwater depth Eco-security Oasis irrigation area Natural vegetation Yanqi basin
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Energy & Fuels
WOS研究方向	Energy & Fuels
CSCD记录号	CSCD:4162517
来源机构	兰州大学 ; 新疆农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227644
作者单位	王水献, 兰州大学资源环境学院, 兰州, 甘肃 730000, 中国.; 吴彬, 新疆农业大学水利与土木工程学院, 乌鲁木齐, 新疆 830052, 中国.; 杨鹏年, 新疆农业大学水利与土木工程学院, 乌鲁木齐, 新疆 830052, 中国.; 董新光, 新疆农业大学水利与土木工程学院, 乌鲁木齐, 新疆 830052, 中国.; 李霞, 新疆农业大学林学与园艺学院, 乌鲁木齐, 新疆 830052, 中国.
推荐引用方式 GB/T 7714	王水献,吴彬,杨鹏年,等. 焉耆盆地绿洲灌区生态安全下的地下水埋深合理界定[J]. 兰州大学, 新疆农业大学,2011,33(3):422-430.
APA	王水献,吴彬,杨鹏年,李霞,&董新光.(2011).焉耆盆地绿洲灌区生态安全下的地下水埋深合理界定.资源科学,33(3),422-430.
MLA	王水献,et al."焉耆盆地绿洲灌区生态安全下的地下水埋深合理界定".资源科学 33.3(2011):422-430.