It is of great significance to quantitatively assess the impact of mountain precipitation on inland river runoff in data scarce regions. Based on the corrected TRMM precipitation and runoff data, a variety of statistical methods were used to identify which areas of precipitation have an important impact on runoff in the Hotan River Basin, and to evaluate the effects that precipitation changes have on runoff at low, mid, high, and extremely high altitudes of mountainous areas. The results showed that: 1) From 1998 to 2015, the annual runoff showed a fluctuating upward trend with a rate of 11.21 × 10⁸ m³/10 a (P < 0.05). Runoff in every season also had an increasing trend, with summer runoff the most significant at a rate of 6.09 × 10⁸ m³/10 a. 2) The annual runoff and precipitation changes had certain synchronization, with a correlation coefficient of 0.45 (P < 0.05). Among them, the correlations between precipitation and runoff changes were highest at low and mid- altitudes, with coefficients of 0.62 and 0.55, respectively (P < 0.05). 3) 65.95% of the regional precipitation at low altitudes and 48.34% at high altitudes were significantly correlated with runoff (P < 0.05), while only 38.84% and 26.58% of regional precipitation levels at mid- and extremely high altitudes were significantly correlated with runoff. 4) The annual precipitation change in the basin was 1%, which would cause the annual runoff to change by 0.24%. In 1998–2015, the change of annual runoff caused by precipitation change at high altitudes was largest at a rate of −6.01%; the change rates of annual runoff caused by precipitation change in the low, mid-, and extremely high altitudes were −3.66%, −3.62%, and −3.67%, respectively. The results have significant scientific guidance for water resource management in arid basins.

在数据稀缺地区，定量评估山区降水对内河径流的影响具有重要意义。根据校正后的TRMM降水和径流数据，使用各种统计方法来确定和田河流域哪些降水区域对径流有重要影响，并评估降水变化对中低端径流的影响。 ，高和极高的山区。结果表明：1从1998年到2015），年径流量显示出与11.21×10的速率波动的上升趋势⁸米³ /10 A（P <0.05）。每个季节的径流量也有增加的趋势，其中夏季径流量最大，为6.09×10 ⁸米³ /10 A。2）年径流量与降水变化具有一定的同步性，相关系数为0.45（P <0.05）。其中，降水和径流变化之间的相关性在低海拔和中海拔最高，分别为0.62和0.55（P <0.05）。3）低海拔地区降水的65.95％和高海拔地区降水的48.34％与径流显着相关（P<0.05），而在中高海拔和极高海拔地区，只有38.84％和26.58％的区域降水水平与径流显着相关。4）流域年降水量变化为1％，年径流量变化为0.24％。1998-2015年，高海拔地区降水变化引起的年径流量变化最大，为−6.01％。在低海拔，中海拔和极高海拔，由降水变化引起的年径流量变化率分别为-3.66％，-3.62％和-3.67％。研究结果对干旱盆地水资源管理具有重要的科学指导意义。