干旱区生态环境知识资源中心(Arid): 干旱半干旱区天然植被的地下水水文生态响应研究

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	干旱半干旱区天然植被的地下水水文生态响应研究
其他题名	Eco-hydrological response of natural vegetation in arid and semi-arid area:a review
	黄金廷; 侯光才; 尹立河; 卢桦
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2011
卷号	34 期号:5 页码:788-793
中文摘要	在干旱半干旱地区，天然植被与地下水关系是生态水文地质学的重要研究内容之一。生态地下水埋深等概念建立了生态地下水位的基本框架，但研究成果仅是定性或半定量的描述。为弥补这一不足，国内外学者开展了大量的理论和实验研究。在理论研究方面，提出了植物蒸腾地下水临界水位埋深理论公式，确定了植被受水分胁迫响应的评价方法，并利用植物生理学、地下水水文学理论评价地下水水位变化对植被影响及相互作用机制；在实验研究方面，广泛应用蒸腾比例法和同位素混合比法确定植被对地下水的依赖程度。这些研究成果虽然为生态与水资源保护提供了重要的理论和技术支撑，但仍需进一步深入研究根系吸水机制、蒸散发的解析方法、人类工程活动影响地下水时的生态响应机制。
英文摘要	Research on the relationship between natural vegetation and groundwater plays an important role in protecting the ecosystem and water resource in arid and semi-arid area,as well as the important component of eco hydrology.In arid and semi-arid area,because of spare rain fall and strong evapotranspration,the natural vegetation grows under water-limited conditions which cause two kinds of response:physiological and ecological response.The physiological response expressed by the direct effects of water stress,the redistribution of roots and biomass production limitation.The physiological research limited in single plant scale so it can not server for the protecting of eco-environment and water resource in the large scale.Generally speaking,when the researchers focus on this question,they always arrive at the concept of ecological groundwater depth,suitable groundwater table depth according to field survey.Obviously,this kind of conception is lack of the theory basis.To overcome these problems,in recent years,researchers study ulterior under the atmosphere,soil,vegetation and groundwater continuum theory.The results can be attribute two type:the first one is theory research and the second one is field test.In the theory facet,there are two kinds of function,the step and linear equations,can be used to quantify the threshold depth of groundwater table consuming by phreatophyte; another advance is using the mean duration of an excursion below the soil moisture level which plants begin closing their stomata to justify vegetation eco-hydrology response.In the field test facet,the methods evapotranspiration ratio and the mixing isotopic model can be used to determine the ratios of various water source used by vegetation that has been adopted and acquired confidence results in the America and Australia.Although lots of results have been got but there remain some questions:(1)whether or not exist of the compensation ability of roots? (2)The response mechanism of vegetation under the impact by human activity? (3)How to separate accurately the evaporation and transpiration from evapotranspiration? The analysis on the eco-hydrology response of natural vegetation in arid and semi-arid area can guide us to do further research that sever for establishing the scientific scenario to protect the vegetation and water resources.
中文关键词	植被 ; 蒸散发 ; 生态水文 ; 地下水
英文关键词	vegetation evapotranspiration eco-hydrology groundwater
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Geology
WOS研究方向	Geology
CSCD记录号	CSCD:4327929
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226481
作者单位	黄金廷, 长安大学环境科学与工程学院, 西安, 陕西 710054, 中国.; 卢桦, 长安大学环境科学与工程学院, 西安, 陕西 710054, 中国.; 侯光才, 西安地质调查中心, 西安, 陕西 710054, 中国.; 尹立河, 西安地质调查中心, 西安, 陕西 710054, 中国.
推荐引用方式 GB/T 7714	黄金廷,侯光才,尹立河,等. 干旱半干旱区天然植被的地下水水文生态响应研究[J],2011,34(5):788-793.
APA	黄金廷,侯光才,尹立河,&卢桦.(2011).干旱半干旱区天然植被的地下水水文生态响应研究.干旱区地理,34(5),788-793.
MLA	黄金廷,et al."干旱半干旱区天然植被的地下水水文生态响应研究".干旱区地理 34.5(2011):788-793.