基于临界支撑流量的西藏典型河流源头位置确定及河网解析研究
Determination of a Riverhead Based on Critical Support Discharge and River Network Analysis
查看参考文献24篇
文摘
|
河源作为河流形成环境的重要标志,需要一个简单且客观有效的判定方法。提出一种基于临界支撑流量(CSD)的河源集水面积计算模型,并且建立最小集水面积CSA和CSD的关系。利用该模型在西藏的2个流域(拉萨河的堆龙曲、尼洋河白水曲)进行对比研究,结果表明,堆龙曲的临界支撑流量(Q_c)为0.002 8 m~3/s,而白水曲为0.008 5 m~3/s。另外,临界支撑流量可随水文气候条件而变化,湿润地区(白水曲)的临界支撑流量Q_c要比半干旱地区(堆龙曲)的大。所提出的临界支撑流量(CSD)概念和模型方法可以用于在复杂的地理区域确定河源的水文学指标,它也可以反映出不同地区水文气候变化对河流补给的影响。 |
其他语种文摘
|
A new model referring to the relation of CSA and CSD was proposed,which was based on the physical mechanism for the origin of river heads.The feasibility of the model was verified by using two watersheds of Duilongqu basin of Lhasa River and Beishuiqu basin of Niyang River in Tibet to calculate the CSA and extract river networks.The comparison results of river networks derived from DEM with real ones indicated that the critical support discharge Q_c are (0.002 8 ±0.001) m~3/s in Duilongqu and (0.008 5±0.001) m~3/s in Beishuiqu,respectively.The CSD can vary with hydro-climate conditions. It was higher in humid region and lower in arid region.Using this method, the optimal critical support discharge Q_c of 0.008 5 m~3/s in Beishuiqu basin (humid region) was greater than 0.002 8 m~3/s for Duilongqu (semi-arid region).The suggested method provided a new application approach that could be used to determine CSD (Q_c) in complex geographical regions,and the effect of hydro-climate change could be reflected. |
来源
|
四川大学学报. 工程科学版
,2014,46(6):49-55 【核心库】
|
关键词
|
河网提取
;
临界支撑流量
;
水文气候条件
;
河流源头
|
地址
|
中国科学院成都山地灾害与环境研究所, 中国科学院山地表生过程与生态调控重点实验室, 四川, 成都, 610041
|
语种
|
中文 |
文献类型
|
研究性论文 |
ISSN
|
1009-3087 |
学科
|
地球物理学 |
基金
|
国家自然科学基金资助项目
;
中国科学院知识创新工程项目
|
文献收藏号
|
CSCD:5280903
|
参考文献 共
24
共2页
|
1.
Jones R. Algorithms for using a DEM for mapping catchment areas of stream sediment samples.
Computers and Geosciences,2002,28(9):1051-1060
|
被引
7
次
|
|
|
|
2.
Ariza-Villaverde A B. Multi-fractal analysis applied to the study of the accuracy of DEM-based stream derivation.
Geomorphology,2013,197:85-95
|
被引
6
次
|
|
|
|
3.
关颖慧. 基于DEM的黑龙江宾州河流域水系提取试验研究.
水土保持通报,2012,32(1):127-131
|
被引
8
次
|
|
|
|
4.
潘扎荣. 河道基本生态需水的年内展布计算法.
水利学报,2013,44(1):119-126
|
被引
30
次
|
|
|
|
5.
郑志宏. 生态需水量计算Tennant法的改进及应用.
四川大学学报:工程科学版,2010,42(2):34-39
|
被引
13
次
|
|
|
|
6.
Tennant D L. Instream flow regiments for fish,wildlife,recreation and related environmental resources.
Fisheries,1976,1(4):6-10
|
被引
138
次
|
|
|
|
7.
Fraser J C.
Suggestions for developing flow recommendations for in-stream uses of New Zealand streams. Ministry of Works and Development Water and Soil Miscellaneous Publication NO.6,1978
|
被引
1
次
|
|
|
|
8.
Singh K P. Hydrology of 7-day 10-year low flows.
Journal of the Hydraulics Division,1974,100(12):1753-1771
|
被引
3
次
|
|
|
|
9.
Chiang S L. Low flow criteria for diversions and impoundments.
Journal of the Water Resources Planning and Management Division,1976,102(2):227-238
|
被引
2
次
|
|
|
|
10.
Tharme R E. A global prespective on environmental flow assessment: emerging trends in the development and application of environmental flow methodologies for rivers.
River Research and Applications,2003,19(5/6):397-441
|
被引
109
次
|
|
|
|
11.
Martz L W. Numerical definition of drainage network and subcatchment areas from digital elevation models.
Computers and Geosciences,1992,18(6):747-761
|
被引
84
次
|
|
|
|
12.
孙爱立. 我国水系提取阈值影响因素分析.
水利学报,2013,44(8):901-908
|
被引
14
次
|
|
|
|
13.
师长兴. 利用DEM进行黄河中游河网提取及河网密度空间差异分析.
测绘通报,2012(10):24-27
|
被引
5
次
|
|
|
|
14.
杨邦. 集水面积阈值确定方法的比较研究.
水电能源科学,2009,27(5):11-14
|
被引
18
次
|
|
|
|
15.
Li L. A preprocessing program for hydrologic model-A case study in the Wei River Basin.
Procedia Environmental Sciences,2012,13:766-777
|
被引
4
次
|
|
|
|
16.
Richter B D. How much water does a river need?.
Freshwater Biology,1997,37(1):231-249
|
被引
126
次
|
|
|
|
17.
O'Callaghan J F. The extraction of drainage networks from digital elevation data.
Computer Vision,Graphics,and Image Processing,1984,28(3):323-344
|
被引
242
次
|
|
|
|
18.
Quinn P. The prediction of hillslope flow paths for distributed hydrological modeling using digital terrain models.
Hydrological Processes,1991,5(1):59-79
|
被引
76
次
|
|
|
|
19.
Gain A K. Thresholds of hydrologic flow regime of a river and investigation of climate change impact-the case of the Lower Brahmaputra river Basin.
Climatic Change,2013,120(1/2):463-475
|
被引
2
次
|
|
|
|
20.
Takahashi H. The calculation method of monthly average temperature,monthly precipitation and evapotranspiration.
Synoptics,1979,26(12):759-763
|
被引
1
次
|
|
|
|
|