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通过丽江盆地气象水文观测资料研究发现:冰雪消融加剧、融水增加,漾弓江流域径流量明显上升;高海拔冰雪区消融期提前,春季径流增加明显;高海拔冰雪区的径流输出对漾弓江流域水量平衡的贡献量逐年增加,体现了全球气候变暖背景下高海拔冰雪区对整个流域水循环的重要性.对海螺沟流域实测气象水文资料的分析也表明,气候变暖背景下,该流域冰雪区水量输出也逐年上升.两流域高海拔区输出水量的剧烈增加,明显响应了气候变暖,表明了流域水循环的加速,这必然将对区域的发展和资源开发产生重要影响.
According to the meteorological and hydrological observation data of Lijiang Basin, the runoff of ice and snow aggravated and meltwater increased, and the runoff of Yanggong River valley increased obviously. The ablation period in high altitude and ice zone advanced earlier and the spring runoff increased obviously. The contribution of water balance increases year by year, reflecting the importance of high altitude ice and snow area to the water cycle of the whole basin in the context of global warming.Analysis of the measured meteorological and hydrological data in Hailuogou watershed also shows that under the background of climate warming, The output of water in the district also increased year by year.The drastic increase of the output water in the high-altitude area of the two basins obviously responded to the warming of the water, indicating the acceleration of water cycle in the basin, which will inevitably have an important influence on the regional development and resource development.