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通过对天山北麓中段土地类型、河流径流和植被覆盖等土壤侵蚀影响因素的空间分布特征分析认为 :1天山北麓中段主要侵蚀类型为风蚀、水蚀、冻融侵蚀及人为加速侵蚀 ;2侵蚀产沙类型以及产沙强度在空间上具有明显的垂直变化规律 :沙漠以风力侵蚀、高山和亚高山以冻融侵蚀为强烈侵蚀类型 ,普遍存在微度水力侵蚀 ,局部表现为中度甚至强度 ;3水蚀类型有冰川融雪径流侵蚀和降雨径流侵蚀两种方式。天山北麓中段河流产沙时间上主要在每年的 5月初至 8月末 ,且冰川雪水径流产沙要比雨水径流产沙量大 ,空间上则主要位于海拔 80 0～ 1 50 0 m的由第三纪、第四纪地层和黄土堆积所组成的中、低山丘陵地
According to the spatial distribution characteristics of soil erosion factors such as land type, runoff and vegetation coverage in the middle section of the northern foot of the Tianshan Mountains, the main erosion types in the northern foot of the Tianshan Mountain are wind erosion, water erosion, freeze-thaw erosion and artificial erosion. Sand type and sediment yield have obvious vertical variation in space: wind erosion in the desert, freezing and thawing erosion in the mountain and sub-alpine area are strongly eroded types, and micro-scale hydraulic erosion is common, with local or even moderate intensity. Water erosion types are glacial snowmelt runoff erosion and rainfall runoff erosion in two ways. The sand production in the middle section of the northern foot of the Tianshan Mountains is mainly from the beginning of May to the end of August of each year. Snowfall runoff from glacier snowfall runoff is larger than runoff from the storm runoff. The spatial distribution is mainly from 80 0 to 1 50 0 m Tertiary, Quaternary strata and the accumulation of loess composed of hilly areas