UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 675 
Contribution from the Forest Service 
HENRY S. GRAVES, Forester 
Washington, D. C. T June 25, 1918 
RANGE PRESERVATION AND ITS 
RELATION TO EROSION CONTROL 
ON WESTERN GRAZING LANDS 
By 
ARTHUR W. SAMPSON, Plant Ecologist 
and LEON H. WEYL, Grazing Examiner 
CONTENTS 
Page 
Purpose ot the Study 1 
Damage Caused by Erosion 2 
Factors Determining the Amount of Erratic Run-off and Erosion . . 6 
Relation of Erosion and Soil Depletion to Vegetative Growth ... 18 
Relation of Erosion and Soil Depletion to Revegetatlon .... 22 
Influence of Grazing on Erosion and Stream Flow 24 
Preventive and Remedial Measures 27 
Conclusions 34 
WASfflNGTON 
GOVERNMENT PRINTING OFFICE 
1918 
