Pamphlets on Forest Economics, Volume 41915 - Economics |
From inside the book
Results 1-5 of 100
Page 4
... erosion adding to the streams tons of silt , much of which is deposited , destroying reservoir space and increasing the cost of power or filling navigable channels . Later these deposits are removed at the expense of the general public ...
... erosion adding to the streams tons of silt , much of which is deposited , destroying reservoir space and increasing the cost of power or filling navigable channels . Later these deposits are removed at the expense of the general public ...
Page iii
F175366 EROSION OF EARTH FOLLOWING DESTRUCTION OF VEGETATION FIG . 1. - Forests destroyed by smelter fumes . The soil is unprotected and erosion is most destructive F37023 SOIL PROTECTED BY LITTER FIG . 2. - The blanket of needles and ...
F175366 EROSION OF EARTH FOLLOWING DESTRUCTION OF VEGETATION FIG . 1. - Forests destroyed by smelter fumes . The soil is unprotected and erosion is most destructive F37023 SOIL PROTECTED BY LITTER FIG . 2. - The blanket of needles and ...
Page iv
... erosion . San Bernardino County , Calif . ROOTS OF TREES BINDING THE SOIL FIG . 2. - Roots and rootlets of forest trees in the soil , showing how their network binds the soil and protects it from erosion . When a tree dies the soil and ...
... erosion . San Bernardino County , Calif . ROOTS OF TREES BINDING THE SOIL FIG . 2. - Roots and rootlets of forest trees in the soil , showing how their network binds the soil and protects it from erosion . When a tree dies the soil and ...
Page 5
... erosion , the sec- tions of the United States where it is most prevalent , the conditions . of rainfall , surface and soil which cause excessive erosion , and the means of reducing it for the protection of water - power resources ...
... erosion , the sec- tions of the United States where it is most prevalent , the conditions . of rainfall , surface and soil which cause excessive erosion , and the means of reducing it for the protection of water - power resources ...
Page 6
... erosion . Such soils are fine gravels and coarse sands and soils of finer texture which are granulated on the surface and have thorough subsoil drainage . Soils of finer texture having a deficiency in binding material , such as river ...
... erosion . Such soils are fine gravels and coarse sands and soils of finer texture which are granulated on the surface and have thorough subsoil drainage . Soils of finer texture having a deficiency in binding material , such as river ...
Common terms and phrases
acres agriculture all-American canal American amount annual assessment average basin Biscarrosse Board bonds British California canal cent channel Colorado River commission Committee conservation construction cost crops cyanamid process deforestation district drainage drainage basin dunes economic effect engineering erosion estimated evaporation expenditures exports fact farm Federal Government feet flood control forest forest cover forest land forestry humus Imperial Imperial Valley important improvement inches increase industry influence of forests interest irrigation Lake levees ment method mining Mississippi River Missouri Missouri River mountains Muscle Shoals navigation nitrogen nitrogen fixation period plant precipitation present problem production proposed protection rain rainfall region reservoir result Rio Puerco run-off sand silt single tax slopes snow soil southern square miles storage stream flow surface Survey tariff taxation Taxpayers timber tion tons trade trees tributaries United Valley vegetation Waldes watershed
Popular passages
Page 6 - No public forest reservation shall be established, except to improve and protect the forest within the reservation, or for the purpose of securing favorable conditions of water flows, and to furnish a continuous supply of timber for the use and necessities of citizens of the United States...
Page 32 - That to enable the state of Arkansas to construct the necessary levees and drains to reclaim the swamp and overflowed lands therein, the whole of those swamp and overflowed lands made unfit thereby for cultivation, which shall remain unsold at the passage of this act, shall be and the same are hereby granted to said state.
Page 66 - BROWN (J. Croumbie), LL.D. Reboisement in France; or, Records of the Replanting of the Alps, the Cevennes, and the Pyrenees with Trees, Herbage, and Bush. Demy 8vo. Cloth, price I2s.
Page 137 - All patents granted, or preemption or homesteads allowed, shall be subject to any vested and accrued water rights, or rights to ditches and reservoirs used in connection with such water rights, as may have been acquired under or recognized by this section.
Page 137 - That whenever by priority of possession rights to the use of water for mining, agricultural, manufacturing, or other purposes have vested and accrued and the same are recognized and acknowledged by the local customs, laws, and the decisions of courts, the possessors and owners of such vested rights shall be maintained and protected in the same...
Page 4 - But the value of property results from the use to which it is put, and varies with the profitableness of that use, present and prospective, actual and anticipated. There is no pecuniary value outside of that which results from such use.
Page 91 - Tables and Results of the Precipitation, in Rain and Snow, in the United States, and at some stations in adjacent parts of North America, and in Central and South America.
Page 33 - That penstocks or other similar facilities adapted to possible future use in the development of hydroelectric power shall be installed in any dam herein authorized when approved by the Secretary of War upon the recommendation of the Chief of Engineers and of the Federal Power Commission.
Page 54 - Plaisia, which disappeared during the entire time that the mountain remained cleared of its forests (from the end of the eighteenth century to the middle of the nineteenth), and reappeared 30 years ago, when the work of reforesting the slope had been finished.