. The Caribbean forester. Forests and forestry Caribbean Area Periodicals; Forests and forestry Tropics Periodicals. 94 Caribbean Forester agement policy for the public forest. In 1933 Meyerhoff (40) described in detail the mineral resources of the area. During the same year Barbour (44) derived soil and stumpage values and two years later pro- posed numerous working circles for the or- ganization of cutting. Hadley cruised the public forest in 1937. Upson prepared a transportation plan for the public forest in 1945 (53). THE FOREST LANDS OF THE LUQUI- LLO MOUNTAINS AND THEIR NATURAL RESOURCES
. The Caribbean forester. Forests and forestry Caribbean Area Periodicals; Forests and forestry Tropics Periodicals. 94 Caribbean Forester agement policy for the public forest. In 1933 Meyerhoff (40) described in detail the mineral resources of the area. During the same year Barbour (44) derived soil and stumpage values and two years later pro- posed numerous working circles for the or- ganization of cutting. Hadley cruised the public forest in 1937. Upson prepared a transportation plan for the public forest in 1945 (53). THE FOREST LANDS OF THE LUQUI- LLO MOUNTAINS AND THEIR NATURAL RESOURCES Forest land, as here defined, is land which is most productive when covered by forest. In Puerto Rico this generally means land which is unsuited to permanent cultivation or forage production but which will produce tree crops. In the Luquillo Mountains the edge of forest land is defined partly by slope and partly by rainfall. The transition is not everywhere abrupt. Above 400 to 600 feet of elevation slopes commonly exceed 40 percent and rainfall is more than 90 inches annually. This is forest land. At lower elevation the foothills are generally suited to pasturing or cultivation. The area of fo- rest land in the mountains is estimated at 48,550 acres (See Fig. 2). Geology and Topography The Luquillo Mountains are upper Cre- taceous. Their successful resistance to ero- sive forces since that time is apparently a result of folding (39). The rocks of the Luquillo Mountains are not distinct from those of other upland areas of Puerto Rico. Igneous rocks, mostly andesitic forms, cover the entire area. A large quartz diorite in- trusive is exposed in the south central part of the range. Tuffs and shales are present but less common. The mountains consist of three ele-. Fig. 1.—The upper Rio Hicaeo, flowing on a sandy bed through a nearly level valley. Its width here is about 20 feet. (El no Hicaeo arriba, dcsli- zdndose sobre caucc arenoso, a traves de un voile casi piano. Aqui tic
Size: 1786px × 1399px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
