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No.60 (2013/12) >

Title :亜熱帯野草地におけるリターの分解について
Title alternative :Litter decompositon of several grasses on subtropical native grassland.
Authors :平川, 守彦
平山, 琢二
森山, 克子
Authors alternative :Hirakawa, Morihiko
Hirayama, Takuji
Moriyama, Katsuko
Issue Date :27-Dec-2013
Abstract :This experiment was carried out to examine the seasonal change of several kinds forage grass and wild grass of litter decomposition rate in subtropical native pasture on the grassland ecosystem.The litter of the above-ground used for the experiments is standing dead plants of Bidens pilosa, silver grass, pangolagrass, bahiagrass collected in the previous year. A standing dead plant as litter materials was divided lamina part and stem part, and used three grass species Bidens pilosa, silvergrass, pangolagrass. Litters that range from 4 to 7 grams of each grass put in the litter bag were set in grassland. Setting litter bags in grassland were picked up every other month. There was a significant difference on the average litter decomposition rate of three grasses which are Bidens pilosa, silver grass and pangolagrass though it showed the similar tendency in seasonal changes of the litter decomposition rate of the above-ground. It was quicker decomposition rate than litter decomposition rate of the above-ground of each grass species than that of the stem, though there was one exception in pangola grass species which lamina parts were low value than stem parts from July through September. Litter decomposition rate of the lamina parts of Bidens pilosa and silvergrass were significantly faster than that of stem parts, but was not significant litter decomposition rate between lamina and stem parts of pangolagrass. There was positively correlated with difference of litter decomposition rate between lamina part and the stem parts of which were Bidens pilosa, silvergrass and pangolagrass. There was positively correlated with difference of litter decomposition rate between digestability of used grasses. It is necessary to sufficiently consider for the decomposition rate of the litter, when it constructs the simulation model by carrying out systems analysis, since it significant change in the every season.
Type Local :紀要論文
ISSN :0370-4246
Publisher :琉球大学農学部
URI :http://hdl.handle.net/20.500.12000/28974
Citation :琉球大学農学部学術報告 = The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus no.60 p.65 -68
Appears in Collections:No.60 (2013/12)

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