【作者】 邓振镛； 张强； 李栋梁； 朱拥军； 董安祥； 张毅；

【Author】 DENG Zheng-yong1, ZHANG Qiang1, LI Dong-liang2, Zhu Yong-jun3,DONG An-Xiang1,ZHANG Yi4 (1. Key Laboratory of Arid Climatic Change and Reducting Disaster of Gansu Province, Lanzhou Arid Meteorological Institute, Chinese Meteorological Administration, Lanzhou Gansu 730020,China; 2. Cold and Arid Region Environmental and Engineering Research Institute, Chinese Academy of Science ,Lanzhou 730020,China; 3.Tianshui Meteorological Bureau, Tianshui Gansu 730020,China; 4. Gansu Meteorological Bureau ,Lanzhou 730020,China)

【机构】 中国气象局兰州干旱气象研究所甘肃省干旱气候变化与减灾重点实验室； 中国科学院寒区旱区环境与工程研究所； 天水市气象局； 甘肃省气象局；

【摘要】 利用渭河上游北道水文站的径流量和输沙量资料和渭河上游流域16个气象站的气象资料,分析了1951～2003年期间气候变化对渭河上游径流量和输沙量的影响。结果表明:渭河上游径流量变化总体呈下降趋势,跃变点发生在1967年,60年代径流量最大,90年代以后径流量最小。径流量的变化主要取决于流域降水量的变化。葫芦河支流流域的降水量对径流量变化的影响最为敏感,其次是榜沙河支流流域的降水量。输沙量的多少主要取决于上游降水量的多少和大雨的次数,其次是风速大小和大风次数的多少。更多还原

【Abstract】 Using data of the Surface Runoff and transporting sand in Beidao hydrologic station and data in 16 meteorological stations of Upper reaches of Wei River, Impact of Climate Change on the Surface Runoff in Upper reaches of Wei River and transporting sand has been analyzed from 1951 to 2003. The results show that the Surface Runoff in Upper reaches of Wei River exists primarily descending trends. Catastrophe appeared in 1967. The Surface Runoff was the biggest in the 1960s.It was the least after the 1990s.The Surface Runoff change main depends on precipitation change. Precipitation of tributary valley of hulu river is extremely sensitive to the surface runoff change first, precipitation of tributary valley of bangsha river second. Transporting sand number depends on precipitation change and heavy rain number in Upper Reaches first, wind force and gale number second.更多还原