Development of algorithms for retrieving ecosystem information in East Asian lakes using remote sensing technique

2014 Fiscal Year Final Research Report

• Project/Area Number: 23404015
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 海外学術
• Research Field: Civil and environmental engineering
• Research Institution: University of Tsukuba
• Principal Investigator: FUKUSHIMA Takehiko 筑波大学, 生命環境系, 教授 (90124354)
• Co-Investigator(Kenkyū-buntansha): MATSUSHITA Bunkei 筑波大学, 生命環境系, 准教授 (80361319)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: リモートセンシング / 生態系 / アジア / 湖沼 / アオコ / 水草

Outline of Final Research Achievements

Regarding to primary production, the algorithms for retrieving chlorophyll-a concentration, its absorption coefficient, euphotic zone depth, light diffuse attenuation coefficient etc. were developed for turbid water regions and validated with in-situ measured values. We developed the method distinguishing aquatic macrophytes (floating and emergent) and surface cyanobacterial blooms and applied it to Japanese and Indonesian lakes to analyze the yearly changes in the coverages of aquatic macrophytes. In addition, the method to detect submerged macrophytes was proposed and applied successfully to a Japanese lake. Last, the algorithms for monitoring levels of cyanobacterial blooms using the visual cyanobacteria index and floating algae index and the effective use was validated in Japanese and Indonesian lakes.

Free Research Field

水環境科学