Dirt: The Erosion of Civilizations - Kootenay Local Agricultural Society

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14. Washington 1803, 103–4. 15. Jefferson 1813, 509. 16. Taylor 1814, 11, 15, 10. 17. de Beaujour 1814, 85–86. 18. Lorain 1825, 240. 19. Phillips 1909, 1:284–85. 20. Craven 1925, 81. 21. Letter from Alabama 1833. 22. Ruffin 1832, 15. 23. C. Lyell 1849, 2:24. 24. C. Lyell 1849, 2:36. 25. C. Lyell 1849, 2:72. 26. U.S. Senate 1850, 7–8. 27. U.S. Senate 1850, 9. 28. White 1910, 40, 45. 29. Glenn 1911, 11, 19. 30. Hall 1937, 1. 7. dust blow 1. Johnson 1902, 638, 653. 2. Shaler 1905, 122–24, 128. 3. Shaler 1891, 330. 4. Shaler 1891, 332. 5. Davis 1914, 207, 213. 6. Davis 1914, 216–17. 7. Throckmorton and Compton 1938, 19–20. 8. Great Plains Committee 1936, 4. 9. Sampson 1981, 17. 10. Lowdermilk 1953, 26. 11. Schickele, Himmel, and Hurd 1935, 231. 12. National Research Council 1989, 9. 13. Ponting 1993, 261–62. 1. Liebig 1843, 63. 2. Hilgard 1860, 361. 3. Jenny 1961, 9–10. 4. Whitney 1909, 66. 5. van Hise 1916, 321–22. 8. dirty business notes to pages 125–193 249
250 6. USDA 1901, 31. 7. Whitney 1925, 12, 39. 8. Crookes 1900, 6, 7. 9. Smil 2001, 139. 10. Howard 1940, 4. 11. Howard 1940, 219–20. 12. Faulkner 1943, 5. 13. Faulkner 1943, 84, 127–28. 9. islands in time 1. Williams 1837, 244–45. 2. Buckland and Dugmore 1991, 116. 1. Engels 1844, 58. 2. Cassman et al. 1995, 218. notes to pages 194–239 10. life span <strong>of</strong> civilizations
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Dirt
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Dirt the erosion of civilizations D
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For Xena T. Dog, enthusiastic field
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acknowledgments This book could nev
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2 Yet what is dirt? We try to keep
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4 discovered ways to enhance soil f
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6 quent centuries, nutrient depleti
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two Skin of the Earth We know more
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villa in Gloucestershire lay undete
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When we behold a wide, turf-covered
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Soil not only helps shape the land,
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ter and mineral soil. Billions of m
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Topography also affects the soil. T
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Wind can pick up and erode dry soil
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Combinations of soil horizons, thei
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much. This leaves the issue in a po
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28 Ice Age was not a single event.
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30 For much of the last century, th
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32 Abu Hureyra sat on a low promont
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34 wheat dating from 10,000 years a
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36 Domesticated livestock not only
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38 inated the southern Mesopotamian
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40 of a high load of dissolved salt
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42 direct water to particular place
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44 by the color of dirt eroded from
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46 out the region, he concluded tha
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four Graveyard of Empires To Protec
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the constitution, proposed a ban on
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Figure 7. Parthenon. Albumen print
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est soils from hillsides disturbed
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Figure 8. Map of Roman Italy. follo
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the Roman heartland became increasi
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ically let a piece of ground lie fa
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foot thick, it probably took at lea
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into densely planted olive farms—
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families a few centuries earlier. T
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classic, supporting three editions
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on the edge of the Arabian Desert a
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When Moses and company arrived, Can
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urned before the onset of the rains
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sion in the Mayan of the Petén not
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Archaeological records from this pe
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The contrast between how the Pueblo
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84 forest soils as it went, agricul
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86 to a thousand years. Soil profil
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88 land and birch forest. Following
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90 Figure 10. Miniature from an ear
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92 the early 1300s to about two mil
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94 the Danes improved their sandy d
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96 layers, ’till we arrive to the
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98 recipe for degrading soil fertil
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100 vived on vegetables, gruel, and
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102 French Alps lost a third to mor
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104 Despite such profiteering, by 1
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106 from the smallest rill to the g
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108 A potato blight that arrived fr
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110 uries such as sugar, coffee, an
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112 Subsequent foreign investment o
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six Westward Hoe Since the achievem
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A few miles in from the forest edge
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wherein one man by his owne labour
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Particularly in the South, the read
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worn out, and washed and gullied, s
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explained that American farmers had
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marle County Agricultural Society i
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purchased a farm in the 1820s. A de
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Figure 14. Charles Lyell’s illust
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Traveling through much of the South
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Tensions came to a head after the S
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But this still doesn’t explain th
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Figure 16. North Carolina gully sys
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more than three thousand years and
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settlements for several thousand ye
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seven Dust Blow One man cannot stop
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land-hungry settlers. From 1878 to
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without the least reference to the
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Figure 18. Breaking new land with d
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Figure 19. Dust storm approaching S
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taxes, and other unavoidable expens
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Figure 21. Plowing a steep hillside
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tion of heavy machinery and agroche
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Soil erosion rapidly became a major
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egion. There are few reliable measu
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ing with the Germans, Kalmyks were
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grazing animals doubled; the human
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years. Present rates of erosion, ho
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land was being exhausted. Although
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In 1958 the Department of Agricultu
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eplacing water-holding capacity los
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ing on access to fresh land or find
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180 our way in that the backyard wo
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182 Figure 23. Chinese farmers plow
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184 less, he experimented with agri
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186 Figure 24. Lithograph of mounta
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188 fiscated the remaining lands th
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190 Hilgard rightly dismissed the p
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192 important was the mix of silt,
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194 ping would exhaust the natural
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196 atmospheric nitrogen. On July 2
Page 209 and 210: 198 increases in crop production.
Page 211 and 212: 200 Estimates for when petroleum pr
Page 213 and 214: 202 ground—turning our dirt into
Page 215 and 216: 204 greater tonnage of machinery pe
Page 217 and 218: 206 may prove our best hope for mai
Page 219 and 220: 208 tilizers, hosts the longest ong
Page 221 and 222: 210 soil fertility and exporting po
Page 223 and 224: 212 No-till farming is very effecti
Page 225 and 226: 214 It is no secret that if agricul
Page 227 and 228: 216 some consumed their future and
Page 229 and 230: 218 Pollen preserved in lake sedime
Page 231 and 232: 220 washed off the slopes now bury
Page 233 and 234: 222 ply. So topsoil loss retarded f
Page 235 and 236: 224 different fates. Tikopia develo
Page 237 and 238: 226 where vegetation stabilizes the
Page 239 and 240: 228 0 50 100 km inhabitants. Two ce
Page 241 and 242: 230 pushes peasants from hillside s
Page 243 and 244: 232 gardens grew up throughout the
Page 245 and 246: 234 Credible scientists also disagr
Page 247 and 248: 236 notice the problem. Like a dise
Page 249 and 250: 238 asters. Larger societies, with
Page 251 and 252: 240 before plants have all they can
Page 253 and 254: 242 faster than it is replaced dest
Page 255 and 256: 244 figuring the downstream end of
Page 257 and 258: 246 Meeting this challenge would al
Page 259: 248 10. Marsh 1864, 9, 42. 11. Lowd
Page 263 and 264: 252 Schwartzman, D. W., and T. Volk
Page 265 and 266: 254 Beach, T., S. Luzzadder-Beach,
Page 267 and 268: 256 and human response. In Environm
Page 269 and 270: 258 Lang, A. 2003. Phases of soil e
Page 271 and 272: 260 Cronon, W. 1983. Changes in the
Page 273 and 274: 262 Bennett, H. H., and W. R. Chapl
Page 275 and 276: 264 Saiko, T. A. 1995. Implications
Page 277 and 278: 266 Jackson, W. 2002. Farming in na
Page 279 and 280: 268 ———. 1925. Soil and Civil
Page 281 and 282: 270 and economic costs of soil eros
Page 283 and 284: 272 agricultural practices (continu
Page 285 and 286: 274 Columella, Lucius Junius Modera
Page 287 and 288: 276 farm subsidy programs: conventi
Page 289 and 290: 278 Joppa Town, Maryland, 140 Judso
Page 291 and 292: 280 nitrogen fertilization (continu
Page 293 and 294: 282 Sea of Galilee (Lake Kinneret),
Page 295 and 296: 284 technological innovation (conti
Page 297: Text: 11.25/13.5 Garamond Display:
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