Effect of climate resource on the grass resuming in east of Qilian Mountains

The factors of climate resource affecting the growth and development of wood and grass are studied in the east of Oilian Mountains．The precipitation is the main factor affecting the growth and development of gras from the last ten days of May to the first ten days of July，while the precipitation and heat are the main factors in the wood growing season．According to the climate resource distribution feature，the suggestions about returning crop field to wood and grass land and its distributions are put forward．