Using the method of measuring weir, the runoff yield and its process are studied in forested watershed, cutting watershed and rangeland watershed during the period from 1999 to 2003 in Huanglong mountainous area. The results show that the runoff variations of interannual and seasonal are various. The runoff in forested watershed is yielded during a whole year and its amount is mainly connected with precipitation. The runoff in rangeland watershed is yielded only in storm season and its amount is mainly conn...
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