西北干旱地区绿洲生态需水及其量化方法研究  

Study on Ecological Water Requirements of Oasis and the Quantification of Method in Northwest Arid Regions

作　　者：李强坤[1] 胡亚伟[1] 丁宪宝[2] 孙娟[1] 

机构地区：[1]黄河水利科学研究院,河南郑州450003 [2]黄委会三门峡库区水文水资源局,河南三门峡452000

出　　处：《资源环境与工程》2007年第5期558-561,共4页Resources Environment & Engineering

基　　金：科技部社会公益研究专项资金项目(2001DIB10079)

摘　　要：在当前生态需水研究的基础上,从生态系统的需水机理出发,界定了生态需水的涵义,认为生态需水具有空间性、时间性和目标性的特点;基于此种认识,提出综合考虑植被组成、植被盖度等多种因素的西北干旱地区绿洲生态需水量化计算方法,以额济纳绿洲为例,计算2000年额济纳绿洲生态需水,并与额济纳绿洲不同时期的生态需水进行对比分析。结果表明,该方法计算结果合理。In the current study, the ecological water requirements based on the mechanism of water requirement from ecosystem, defines the meaning of the ecological water requirement, that the ecological water requirements with spatial, timing and objective features. Based on such comprehension, comprehensive considers the influences of vegetation composition and vegetation coverage on ecological water requirement. The method of calculating ecological water requirement in northwest arid region is presented. Taking the Ejina oasis for instance,this paper calculates the ecological water requirements in 2000, and carries out a comparative analysis of the ecological water requirement of Ejina oasis at different times. The results tests to be reasonable.

关 键 词：生态需水 绿洲 额济纳 

分 类 号：P333.1[天文地球—水文科学]