. California grasslands and range forage grasses. Grasses; Forage plants. MEAN ANNUAL PRECIPITATION IN CALIFORNIA LEGEND 0-5 INCHES 5-10. Fig. 2. Mean annual precipitation in California. (After Crawford and Hurd, Calif. Agr. Expt. Sta. Bui. 654.) lished over this vast area to the near ex- clusion of the formerly more abundant perennials. Precipitation: The rainfall generally decreases from west to east (an exception being in the northern Sierras), and from north to south (fig. 2). Comparison of fig. 2 with the topographic map (fig. 1) shows a definite correlation between ele- vation and amount
. California grasslands and range forage grasses. Grasses; Forage plants. MEAN ANNUAL PRECIPITATION IN CALIFORNIA LEGEND 0-5 INCHES 5-10. Fig. 2. Mean annual precipitation in California. (After Crawford and Hurd, Calif. Agr. Expt. Sta. Bui. 654.) lished over this vast area to the near ex- clusion of the formerly more abundant perennials. Precipitation: The rainfall generally decreases from west to east (an exception being in the northern Sierras), and from north to south (fig. 2). Comparison of fig. 2 with the topographic map (fig. 1) shows a definite correlation between ele- vation and amount of precipitation. The amount and the seasonal distribu- tion of precipitation markedly affect the composition of California grasslands. Rainfall areas of 17 inches or less a year (occurring in winter) are generally dom- inated by annuals, whereas in the high mountain areas of heavier precipitation perennial grasses are abundant. In Cali- fornia the greatest grassland area lies be- tween sea level and about 4,000 feet. Within this range, rainfall varies from less than 10 inches in the southern part of the state to more than 40 inches in the northern foothills. A greater percentage of perennials is accordingly found in the higher elevations receiving more precipi- tation. Perennial grasses also occur spar- ingly on desert areas receiving limited amounts of summer rainfall. Temperature: Spring and summer temperatures, and length of growing sea- son (as affected by temperature), are [8]. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Sampson, Arthur W. (Arthur William), 1884-1967; Hedrick, Donald W; Chase, Agnes, 1869-1963. Berkeley, Calif. : California Agricultural Experiment Station, College of Agriculture, University of California
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Keywords: ., boo, bookcentury1900, booksubjectforageplants, booksubjectgrasses
