| 基于改进月保证率设定法的青海湖流域河流生态需水研究 |
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| 引用本文： | 马育军,李小雁,张思毅,李广泳.基于改进月保证率设定法的青海湖流域河流生态需水研究[J].资源科学,2011,33(2):265-272. |
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| 作者姓名： | 马育军 李小雁 张思毅 李广泳 |
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| 作者单位： | 1. 北京师范大学地表过程与资源生态国家重点实验室,北京,100875;北京师范大学资源学院,北京,100875
2. 北京师范大学资源学院,北京,100875 |
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| 基金项目： | 教育部新世纪优秀人才支持计划项目(编号：NCET-08-0056)；“十一五”国家科技支撑计划重点项目(编号：2007BAC30B02)；国家杰出青年科学基金资助项目(编号：41025001)；中国林业科学研究院林业研究所协作项目(ZD200907)。 |
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| 摘 要： | 本文对月保证率设定法进行改进,不仅考虑了不同保证率年份河流生态需水的差异,而且对不同的生态需水推荐流量等级进行了区分。随后采用改进月保证率设定法研究了青海湖流域的河流生态需水特征,结果表明:布哈河和沙柳河径流量的年际变化幅度较大,但增加或减少趋势不明显,夏季径流量年际波动最为明显,而径流量年内分布均呈单峰变化态型,峰值都出现在7月-8月份;伴随着保证率的降低,河流生态需水量不断增加,而且需水等级越高、增加幅度越大,同时不同保证率年份河流逐月生态需水呈现不同的变化规律;平水年(P=50%)青海湖流域两条主要河流布哈河和沙柳河适宜的生态需水量分别为2.18亿m3、1.36亿m3,枯水年(P=90%)二者分别为1.16亿m3和0.70亿m3。
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| 关 键 词： | 生态需水 改进月保证率设定法 推荐等级 青海湖流域 |
Environmental Flow Requirements of Rivers in the Qinghai Lake Watershed Based on the Improved Monthly Guaranteed Frequency Method |
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| MA Yujun,LI Xiaoyan,ZHANG Siyi and LI Guangyong.Environmental Flow Requirements of Rivers in the Qinghai Lake Watershed Based on the Improved Monthly Guaranteed Frequency Method[J].Resources Science,2011,33(2):265-272. |
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| Authors: | MA Yujun LI Xiaoyan ZHANG Siyi and LI Guangyong |
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| Institution: | State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China; College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China;State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China; College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China;College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China;College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China |
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| Abstract: | Rivers in the Qinghai Lake watershed have been environmentally degraded seriously over the past several decades due to a combined effect of climate change and human activities.In order to provide reference for optimal allocation of water resources,it is critical to evaluate the environmental flow requirements(EFRs) of rivers in this watershed.On the basis of the improvement of the monthly guaranteed frequency method,the authors not only considered the difference of EFRs for different guaranteed frequency ye... |
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| Keywords: | Environmental flow requirements Improved monthly guaranteed frequency method Recommended grade Qinghai Lake watershed |
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