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以新疆主要26条河流为研究对象,依据1956年~2000年径流量资料,揭示主要河流径流量演变趋势,并基于地理信息系统(G IS)技术探讨河流径流量变化的时空特征。结果表明:1956年~1986年为新疆主要河流径流量的衰减期,而自1987年起,河流径流量呈明显的增加趋势;在空间分布上,1956年~1986年间,河流径流量的衰减主要发生在新疆北部,而河流径流量的微增则发生在新疆南部;1987年~2000年间,河流径流量的变化,在空间格局上发生了明显的逆转,河流径流量的增加主要发生在新疆北部,而河流径流量的微减则发生在新疆南部;在与新疆同期气象资料的分析对比后发现,降水量以及温度的明显增加,是导致1987年以后新疆主要河流径流量增加和其空间格局发生变化的主要原因。
Taking the 26 major rivers in Xinjiang as the research object and the runoff data from 1956 to 2000, the trend of the runoff of the major rivers was revealed. Based on the GIS technology, the spatio - temporal characteristics of the runoff of the river were discussed. The results show that from 1956 to 1986, the decay period of the runoff of Xinjiang’s major rivers was significant. However, since 1987, the runoff of the rivers showed a significant increase. In the spatial distribution, the decay of river runoff was mainly between 1956 and 1986 Occurred in the northern part of Xinjiang, while the increase of river runoff occurred in the southern part of Xinjiang. From 1987 to 2000, the change of runoff in the river had a significant reversal in the spatial pattern. The increase of runoff in the river mainly occurred in the northern part of Xinjiang , While the slight decrease of river runoff occurred in southern Xinjiang. Compared with the meteorological data in Xinjiang over the same period, it was found that the significant increase of precipitation and temperature resulted in the increase of runoff and spatial pattern of major rivers in Xinjiang after 1987 The main reason for change.