Evaluation of sediment and carbon storage functions in the formative processes of alluvial plains

冲积平原形成过程中沉积物和碳储存功能评价

• 批准号: 13308004
• 负责人: FUJIMOTO Kiyoshi
• 金额: $ 16.47万
• 依托单位: Nanzan University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13308004/
• 关键词: Alluvial plains; GIS; Sediment budget; Carbon storage; σ^<13>C; Pollen analysis; Sea-level changes; 炭素安定同位対比

In order to clarify the sediment and carbon storage in the alluvium, non-disturbed boring cores which reach the Lower sand layer were collected in the Lower Tokachi River Plain in Hokkaido, the Lower Yahagi River Plain in central Japan and the Lower Oyodo River Plain in southeastern Kyushu and bulk density and carbon contents in each layer of alluvium were clarified. On the other hand, the volume in each layer was estimated using ArcView 3D Analyst for the Lower Tokachi River Plain and the Lower, Yahagi River Plain. Stored sediment and carbon were calculated using the bulk density, carbon contents and the estimated volume in each layer for the two alluvial plains. The total stored carbon in the alluvium in each plain was estimated to be 0.5 to 0.6 % of present global emission of fossil carbon. Stored carbon in mangrove sediments in the Asia-Pacific region was also compiled and the carbon sequestration ability was evaluated.In order to estimate the source of stored carbon, pollen and σ^<13>C analyses were applied for the boring cores. As a result, it was indicated that the relative contribution of each source, such as terrestrial plants, marine-non-marine planktons, and so on will be possible to estimate by combining CN ratio and σ^<15>N value.The relative sea-level changes were clarified in the Lower Furen River Plains, eastern Hokkaido. Sea-level rise between 5000 and 4000 cal BP and sea-level fall between 4000 and 2000 cal BP, which are common trends in the Asia-Pacific Region, were found out. Three abrupt events of sea-level fall, which are seemed to have been caused by seismic uplift, were also detected.

为了澄清sedleturuviuum，北部的下部沙子是北海道的下部，北部的Achi河平原，日本中部的下Yahagi河平原和下Yahagi Rioodo Riodo Riodo Riodo Riodo Riodo Riodo Riodo Riiodo Riiodo River rioodo Riodo Rioodo River rioodo riodo riodo河平原阐明了雷神的每一层中的大量密度和碳含量。对于每个平原上的两个冲积平原，估计在当前的化石碳中，在亚太地区中储存的碳也占碳序列能力的0.5至0.6％。 ^<13> c分析用于钻孔，因此，通过组合CN比率和^<15> n值表示每个源的相对构想。平原，东部北海道。似乎也检测到了地震隆起引起的。

项目成果

FUJIMOTO, K. et al.: "Bulk density and carbon content rate of alluvium in the Lower Tokachi River Plain, northern Japan."ACADEMIA (Natural Science and Health and Physical Education). 11. 57-64 (2003)

FUJIMOTO, K. 等人：“日本北部十胜河下游平原冲积层的堆积密度和碳含量。”ACADEMIA（自然科学与健康与体育）。

KAWASE, K.: "Geomorphic evolution of the coastal lowlands and changes in the sedimentary environment in the Lower Kumozu River, Mie Prefecture."Geographical Review of Japan. 76-4. 211-230 (2003)

KAWASE, K.：“三重县云津江下游沿海低地的地貌演化和沉积环境的变化。”日本地理评论。

藤本 潔: "十勝川下流低地における沖積層の容積重と炭素含有率"南山大学紀要(アカデミア』自然科学・保健体育編). 第11巻. 57-64 (2003)

藤本清：“十胜川下游低地冲积层的体积重量和碳含量”南山大学学报（学术界）自然科学/健康和体育版第 11 卷（2003 年）。

川瀬久美子: "三重県雲出川下流部における海岸低地の形成と堆積環境の変遷"地理学評論. 76巻・4巻. 211-230 (2003)

河濑久美子：“三重县久莫德河下游沿岸低地的形成和沉积环境的变化”，地理评论，第 76 卷，第 4 卷，211-230（2003 年）。

OHIRA, A.: "Holocene sea-level changes and evolution of the Lower Tokachi River Plain, Hokkaido, Japan"SUPPLEMENTI di GEOGRAPHIA FISICA e DINAMICA QUATENARIA. (in press).

OHIRA, A.：“全新世海平面变化和日本北海道十胜河下游平原的演化”地理地理和地质学的补充。