There are many moraine slopes which are high and steep along the north bank of Purlung Tsangpo River because of construction of Sichuan-Tibet Highway.

The research area is located at the head area of Urumqi Rjver，above 3000m and in al-pine periglacial environment．On the moraines of the Last Glaciation and Neo一glaciation al-pine meadow soils develop from 3000 to 3700 m.

This paper is intended to present a preliminary model of transfo(?) mation from moraine to the deposits of glacial debris flow, to describe the distinguishing marks between the two types of deposits, and to compare and study some characteristics of granularity, light and heavy mineral, clay mineral and gravel fabric of them.

Based on the observations on precipitation,ice and snow melt,evaporation and runoff in the mountainous basin of the rmqi River,which is located at the north flank of the middle Chinese Tianshan Mountains,the runoff formation processes are discussed in this paper.

Based on the measurement of energy balance on a glacier at the source area of the Urumqi River on the Tianshan Mountain druing the ablation seasons from June to August of 1986 and 1987, a parameterized energy balance model of glacier melting is developed with standard meteorological elements.