三江源地区气候变化及其对径流的驱动分析(英文)

编号 zgly0001585646

文献类型 期刊论文

文献题名 三江源地区气候变化及其对径流的驱动分析(英文)

作者 张士锋  华东  孟秀敬  张永勇 

作者单位 InstituteofGeographicSciencesandNaturalResourcesResearch  CAS  KeyLab.ofWaterCycle&RelatedSurfaceProcesses  CAS  GraduateUniversityofChineseAcademyofSciences 

母体文献 Journal of Geographical Sciences 

年卷期 2011年06期

年份 2011 

分类号 P467  P333 

关键词 theThree-RiverHeadwatersregion  climatechange  Makkinkmodel  drivingmodel  scenariosanalysis 

文摘内容 Based on the precipitation and temperature data of the 12 meteorological stations in the Three-River Headwaters region and the observed runoff data of Zhimenda in the headwater sub-region of the Yangtze River, Tangnaihai in the headwater sub-region of the Yellow River and Changdu in the headwater sub-region of the Lancang River during the period 1965-2004, this paper analyses the trends of precipitation, temperature, runoff depth and carries out significance tests by means of Mann-Kendall-Sneyers sequential trend test. Makkink model is applied to calculate the potential evaporation. The runoff model driven by precipitation and potential evaporation is developed and the influence on runoff by climate change is simulated under different scenarios. Results show that during the period 1965-2004 the temperature of the Three-River Headwaters region is increasing, the runoff of the three hydrological stations is decreasing and both of them had abrupt changes in 1994, while no significant trend changes happen to the precipitation. The runoff model suggests that the precipitation has a positive effect on the runoff depth, while the potential evaporation plays a negative role. The influence of the potential evaporation on the runoff depth of the Lancang River is found to be the significant in the three rivers; and that of the Yellow River is the least. The result of the scenarios analysis indicates that although the precipitation and the potential evaporation have positive and negative effects on runoff relatively, fluctuated characteristics of individual effect on the runoff depth in specific situations are represented.