Surplus N, 291–293
Sweet potato, 7, 340, 341, 346, 347
Symbiotic nitrogen fixation, 338
T
Takachihogo-Shiibayama site, 350
Takaragi loam, 249, 251
Technic hard materials, 72
Technosols, 70, 72
Tephras, 21, 29, 31, 35–37
Terraced paddy field (“Tanada”), 304
Terraces, 274, 276, 277, 281
Terrace soil, 137, 138, 141, 142, 149, 151, 168
Terrestrialization-type peatlands, 76, 78, 79, 82
Terrestrial Regosols, 62, 64–66
Thapto-red-yellow, 114, 117, 118, 121
Thermic, 78
Thermic soil temperature regime, 14
Timber production, 119, 121
Tohoku, 3–5, 7, 8
Tokai and Hokuriku, 3
Tokai region, 274, 276
Trace element, 144
Traditional vegetation, 299, 305, 312
Transitional-moor Peat soils, 75, 76, 79, 80
Transitional-moor soil materials, 75
Tree line, 17, 30, 43
Trough, 22, 29
Truog-P 2 O 5 , 257
Tsunami, 7
Tsushima Current, 18
Tsuyu, 248
2016 Kumamoto earthquake, 358
Typhoon, 327, 336, 341, 343, 355, 359
Typhoons, 248
U
UAV, 172, 174, 175
Ultramafic rock, 154
Underdrain, 282, 283
Undergrowth vegetation, 289
Uneven ground surface, 358
Unsuccessful plantation, 289
Upland crop, 7, 8
Upland field, 138, 142, 158–163, 166, 167, 171, 172, 174, 331, 332,
335, 336, 338, 339, 346
Upland paddy field, 338, 339
Uplandzation index
Upper limit of manure application, 167
U-shaped valley, 30
V
Variable fertilizer application system, 172–174
Vegetable, 7, 8
Vegetable field, 145–147, 161, 164, 167
Vegetable production, 246, 254, 255, 343
Vegetation, 273, 274, 276, 278, 289, 328, 333
Vegetation succession, 123
Volcanic ash, 5, 7, 28, 35, 36, 38, 44, 48, 332–334, 344, 346
Volcanic ash-derived soil, 341
Volcanic ash soil, 136–138, 142, 149, 150, 167, 168
Volcanic belt, 5
Volcanic ejecta, 5, 69, 78, 82, 84, 85, 88, 89, 122, 124
Volcanic front, 23, 25, 27, 28
Volcanic front line, 249
Volcanic glass, 83–85
Volcanic inner arc, 25
Volcano, 13, 21, 23, 25, 27–31, 35, 36, 42, 44
Volcanogenous Dark Red soil, 113
Volcanogenous Regosols, 62, 64, 65
Volunteer potato weed, 176
W
Warm temperate deciduous forest, 43
Warmth index (WI), 41–43
Water system, 161
Weakly dried phase, 119
Well, 340, 341, 348, 350, 351, 353
Wet Andosols, 251, 256–258
Wet phase, 119
Wheat, 8, 332, 338–343
Winter flooding of paddy field, 284, 285
Winter snow cover, 154
World Reference Base for Soil Resources (WRB), 5
Y
Yayoi period, 38, 41, 45
Z
Zonal Red soil theory, 104
372
Index
Sweet potato, 7, 340, 341, 346, 347
Symbiotic nitrogen fixation, 338
T
Takachihogo-Shiibayama site, 350
Takaragi loam, 249, 251
Technic hard materials, 72
Technosols, 70, 72
Tephras, 21, 29, 31, 35–37
Terraced paddy field (“Tanada”), 304
Terraces, 274, 276, 277, 281
Terrace soil, 137, 138, 141, 142, 149, 151, 168
Terrestrialization-type peatlands, 76, 78, 79, 82
Terrestrial Regosols, 62, 64–66
Thapto-red-yellow, 114, 117, 118, 121
Thermic, 78
Thermic soil temperature regime, 14
Timber production, 119, 121
Tohoku, 3–5, 7, 8
Tokai and Hokuriku, 3
Tokai region, 274, 276
Trace element, 144
Traditional vegetation, 299, 305, 312
Transitional-moor Peat soils, 75, 76, 79, 80
Transitional-moor soil materials, 75
Tree line, 17, 30, 43
Trough, 22, 29
Truog-P 2 O 5 , 257
Tsunami, 7
Tsushima Current, 18
Tsuyu, 248
2016 Kumamoto earthquake, 358
Typhoon, 327, 336, 341, 343, 355, 359
Typhoons, 248
U
UAV, 172, 174, 175
Ultramafic rock, 154
Underdrain, 282, 283
Undergrowth vegetation, 289
Uneven ground surface, 358
Unsuccessful plantation, 289
Upland crop, 7, 8
Upland field, 138, 142, 158–163, 166, 167, 171, 172, 174, 331, 332,
335, 336, 338, 339, 346
Upland paddy field, 338, 339
Uplandzation index
Upper limit of manure application, 167
U-shaped valley, 30
V
Variable fertilizer application system, 172–174
Vegetable, 7, 8
Vegetable field, 145–147, 161, 164, 167
Vegetable production, 246, 254, 255, 343
Vegetation, 273, 274, 276, 278, 289, 328, 333
Vegetation succession, 123
Volcanic ash, 5, 7, 28, 35, 36, 38, 44, 48, 332–334, 344, 346
Volcanic ash-derived soil, 341
Volcanic ash soil, 136–138, 142, 149, 150, 167, 168
Volcanic belt, 5
Volcanic ejecta, 5, 69, 78, 82, 84, 85, 88, 89, 122, 124
Volcanic front, 23, 25, 27, 28
Volcanic front line, 249
Volcanic glass, 83–85
Volcanic inner arc, 25
Volcano, 13, 21, 23, 25, 27–31, 35, 36, 42, 44
Volcanogenous Dark Red soil, 113
Volcanogenous Regosols, 62, 64, 65
Volunteer potato weed, 176
W
Warm temperate deciduous forest, 43
Warmth index (WI), 41–43
Water system, 161
Weakly dried phase, 119
Well, 340, 341, 348, 350, 351, 353
Wet Andosols, 251, 256–258
Wet phase, 119
Wheat, 8, 332, 338–343
Winter flooding of paddy field, 284, 285
Winter snow cover, 154
World Reference Base for Soil Resources (WRB), 5
Y
Yayoi period, 38, 41, 45
Z
Zonal Red soil theory, 104
372
Index
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