Evaluating nitrogen saturation in forested ecosystems based on stoichiometry

2016 Fiscal Year Final Research Report

• Project/Area Number: 26450198
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Forest science
• Research Institution: Kyushu University
• Principal Investigator: Masaaki Chiwa 九州大学, 農学研究院, 准教授 (30380554)
• Co-Investigator(Renkei-kenkyūsha): ENOKI Tsutomu 九州大学, 大学院農学研究院, 准教授 (10305188)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 窒素飽和 / リン制限 / ストイキオメトリー / 蛇紋岩

Outline of Final Research Achievements

Elevated atmospheric nitrogen (N) deposition and its ecological impact is an issue of widespread concern. This study evaluated the effects of elevated N deposition on the nutrient status of Japanese cedar and Japanese cypress based on stoichiometry. Results showed that elevated atmospheric N deposition increased N uptake by these plantation and subsequently enhanced phosphorus (P) demand. However, these plantations did not exhibit P deficiency. Higher P uptake was achieved by enhancing P uptake efficiency, which did not result in P limitation within the plantation.

Free Research Field

生物地球化学