2013 Fiscal Year Final Research Report
Effects of past land use to the carbon, nutrient accumulation and nutrient use of plants
| Project/Area Number |
22580175
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Forest science
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| Research Institution | Forestry and Forest Products Research Institute |
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Principal Investigator |
HASEGAWA Motohiro 独立行政法人森林総合研究所, 森林昆虫研究領域, 主任研究員 (70343811)
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| Co-Investigator(Kenkyū-buntansha) |
SAITO Tomoyuki 独立行政法人森林総合研究所, 東北支所, 主任研究員 (00414483)
ITO Eriko 独立行政法人森林総合研究所, 北海道支所, 主任研究員 (20353584)
KABEYA Daisuke 独立行政法人森林総合研究所, 植物生態研究領域, 主任研究員 (30353650)
OKAMOTO Tohru 独立行政法人森林総合研究所, 関西支所, チーム長 (40353627)
NISHIYAMA Yoshihiko 独立行政法人森林総合研究所, 木曽試験地, 試験地長 (50353800)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | 土地利用 / 土壌 / 養分 / 炭素 / 生態学 |
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| Research Abstract |
On the slope of Mt. Yatsugatake, we investigated the effects of the past land use on the soil property and plant nutrient use. Past land use for each site was determined by the information of old maps, drawings and aerial pictures. We observed the brown forest soil on the forests already existed before Meiji era, black and brown forest soil on the forests changed from grassland after Meiji era, black soil on the sites used as continuously used as grassland. The black soil seemed to accumulate more carbon than the brown soil. Decomposition of filter paper was faster in older forests than in grasslands. Nitrogen concentration in fresh larch needles tended to be higher in the older forests probably because soil nitrogen continuously accumulated after stopping to take out the organic matter from for the site. These results suggested that the conversion from grasslands to forests caused the change of soil property, decomposition process and nitrogen utilization pattern for the plants.
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