Altitudinal Distribution of Humus Properties of Andisols in Japan

Watanabe, Makiko; Sakagami, Kan-ichi; Aoki, Kumiko; Sugiyama, Shinji

doi:10.4157/grj1984b.67.36

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…In addition, Numata (1969) reported that based on research performed by the Ministry of Agriculture & Forestry of Japan (1959), M. sinensis grasslands managed by mowing had higher amounts of humus, soil moisture content, and total N than grasslands dominated by Z. japonica or Pleioblastus spp. M. sinensis has been shown to contribute to humus development on mountain slopes and diluvial uplands at Mount Towada (40–500 m asl, 40°28′N, 140°55′E), Mount Akagi (380–1438 m asl, 36°32′N, 139°10′E), and Mount Daisen (180–820 m asl, 35°22N, 133°32E) (Watanabe et al , 1994). Based on chemical and spectroscopic analysis of charred residues of M. sinensis , Shindo et al (1986) determined that humic acids derived from the burning of M. sinensis vegetation contributed to the abundant accumulation of humus in many soils in Japan (Seki, 1934; Kawamura, 1950; Yamane, 1973).…”

Section: Soil‐forming Processes In M Sinensis‐dominated Soilsmentioning

confidence: 99%

The ecology and agronomy of Miscanthus sinensis, a species important to bioenergy crop development, in its native range in Japan: a review

et al. 2009

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Among several candidate perennial taxa, Miscanthus Â giganteus has been evaluated and promoted as a promising bioenergy crop. Owing to several limitations, however, of the sterile hybrid, both at the taxon and agronomic production levels, other options need to be explored to not only improve M. Â giganteus, which was originally collected in Japan, but to also consider the development of other members of its genus, including Miscanthus sinensis, as bioenergy crops. Indeed, there is likely much to be learned and applied to Miscanthus as a bioenergy crop from the long history of intensive interaction between humans and M. sinensis in Japan, which in some regions of the country spans several thousand years. Combined with its high amount of genetic variation, stress tolerance, biotic interactions with fauna, and function as a keystone species in diverse grasslands and other ecosystems within its native range, the unique and extensive management of M. sinensis in Japan as a forage grass and building material provides agronomists, agroecologists, and plant breeders with the capability of better understanding this species in terms of potential contribution to bioenergy crop development. Moreover, the studies described in this review may serve as a platform for future research of Miscanthus as a bioenergy crop in other parts of the world.

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Section: Soil‐forming Processes In M Sinensis‐dominated Soilsmentioning

confidence: 99%

The ecology and agronomy of Miscanthus sinensis, a species important to bioenergy crop development, in its native range in Japan: a review

et al. 2009

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“…In Figure 5 the data for Towada, Nikko, Akagi and Daisen area are quoted from Watanabe et al (1994) and the other data2) are calculated to provide reference data. From this figure, it is recognized that the optimum climatic condi-Fig.…”

Section: Direction Of Modifying the Coefficient (R) Based On The Equivalent Amount Of Humus And Climatic Indicatormentioning

confidence: 99%

Modification of Decomposing Coefficient in Humus Accumulation Model Applied to Tephra-soil Sequence in Japan.

2001

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The purpose of this study is to modify the decomposition coefficient (r) of the reversing Jenkinson's model: Cmax=C/exp-0.000125 t applied to humus accumulation in tephra-soil sequence. The decomposing coefficient (r) was optimized by the following procedure.1) Examine the inorganic colloid components conducted by selective dissolution analysis to understand the state of humus bonding with aluminum that was considered to assign the age limitation for applying the model. 2) Examine the relationship between present climatic condition represented as Humidmine the direction of modifying the decomposing coefficient (r). 3) Determine the decomposing coefficient (r) by applying the enlarged or reduced coefficient (r) to the reversing Jenkinson's model on the assumption that equilibrium carbon content three representative tephra-soil sequences, Aso, Ashitaka and Towada in Japan. Since chronological sequence of Cmax, the equilibrium carbon content, in the Holocene soils resembled to the other proxy data of past environmental change, it may be considered that the equilibrium value of humus accumulation in the buried soils of tephra-soil sequence reflect the strength of the past solar radiation as the background condition of the yield of plants.

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Evaluation of Pg absorption strength of humic acids as a paleoenvironmental indicator in buried paleosols on tephra beds, Japan

Watanabe¹,

Tanaka²,

Sakagami³

et al. 1996

Quaternary International

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Altitudinal Distribution of Humus Properties of Andisols in Japan

Cited by 3 publications

References 14 publications

The ecology and agronomy of Miscanthus sinensis, a species important to bioenergy crop development, in its native range in Japan: a review

The ecology and agronomy of Miscanthus sinensis, a species important to bioenergy crop development, in its native range in Japan: a review

Modification of Decomposing Coefficient in Humus Accumulation Model Applied to Tephra-soil Sequence in Japan.

Evaluation of Pg absorption strength of humic acids as a paleoenvironmental indicator in buried paleosols on tephra beds, Japan

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