塔里木河源流区径流量年内变化特征

基于塔里木河源流区6个水文站1957年-2008年的实测径流资料,运用非参数检验、小波分析等方法探讨了径流量年内变化特征。结果表明:塔里木河源流区月径流量以及丰水期、枯水期径流量以显著增加趋势为主;源流山区径流量集中度指数在协合拉水文站有轻微增加,而在其他5个水文站皆表现减少趋势;径流量集中度指数的显著周期集中在3⁸a。以上研究结果可为实现该流域水资源的合理配置提供理论依据。

Intra2annual variation analysis of runoff in the headstream area of Tarim River basin

Based on the runo ff data fr om six hydro log ical statio ns in the mo untain headstream a rea o f T arim Riv er Basin from 1957 t o 2008, the intr a2annua l var iation of runoff w as analyzed using the no n2 par amet ric t est and w avelet analysis. The r esults show ed that the mo nthly r unoff, and runoff during the hig h2 and low2flow per io ds in the headstream area increase significantly; in mountain headstr eam area, the concent ratio n deg ree index ( CDI) at the Xiehela hydro lo gical statio n increases slig htly , w hile the indexes at the other five statio ns ( Shanlig uilank, Kaqun, Yuzmenlek, T ongg uzlek, and Wuluw ati) decrease; The concentr a2 tion deg ree indexes of r unoff in the mountain headstr eam ar ea has a significant perio d of 3 to 8 y ea rs. Overall, the results of the study can pr ov ide a scientific basis for realizing the sustainable use o f water resour ces in the Tar im Riv er basin.