The Study of Atmospheric P Deposition to the Southern East China Sea: Compositions, Sources, and Relationship to N Species

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基本資料

Project title

Code/計畫編號

MOST107-2611-M019-004

Translated Name/計畫中文名

南東海之大氣磷沉降研究: 組成、來源和氮物種之關係

Project Coordinator/計畫主持人

Hung-Yu Chen

Funding Organization/主管機關

National Science and Technology Council

Department/Unit

Department of Marine Environmental Informatics

Website

https://www.grb.gov.tw/search/planDetail?id=12676695

Year

2018

Start date/計畫起

01-08-2018

Expected Completion/計畫迄

01-07-2019

Bugetid/研究經費

918千元

ResearchField/研究領域

海洋科學

大氣沉降的巨營養鹽和微營養鹽，在驅動海洋表層初級生產率方面，扮演著重要的角色。大氣沉降輸入的新營養鹽，可能是控制表層海水浮游植物生長的重要環境因子；且大氣輸入的富含營養物質的沉降，在寡營養的條件下將會被增強。磷（P）是無處不在的元素，在氨基酸、蛋白質中以及與氮（N）成為生物組成的一部分。因為，人為產生的大氣N，P不平衡沉降，可能會誘發生態系統成為P限制。與大氣活性氮庫相反，大氣可溶性磷庫的研究較少，且存在高度不確定性。本研究中，我們將會探討大氣主要營養物種的來源（氮（N）和磷（P））以及它們的化學計量。這些營養鹽物質的大氣供應速率，以及對亞熱帶西太平洋大氣沉降的潛在影響也將會被估算。本研究的目的包括：（1）研究區內可溶性N和P的傳輸機制;（2）利用海鹽離子/非海鹽離子和NOAA氣團逆軌跡回推鑑別空氣質量來源; （3）利用相關性分析探討得到大氣氮磷來源之差異;（4）大氣可溶性氮磷輸入對海洋環境的影響。 The atmospheric deposition of both macronutrients and micronutrients plays an important role in driving primary productivity. The new nutrients imported by atmospheric deposition may be an important environmental factor to control phytoplankton growth on the surface seawater. The impact of nutrient-enriched atmospheric inputs is enhanced under oligotrophic conditions. Phosphorus (P) is a ubiquitous element found in amino acids, in proteins and as an integral part of organisms, together with nitrogen (N). Human-driven imbalanced atmospheric deposition of N and P might have induced or will induce P limitation to the ecosystems. In contrast to the atmospheric reactive N pool, the atmospheric soluble P pool is less studied and remains highly uncertain.In this study, We discuss sources of the main nutrient species (N and P) in the aerosols and their stoichiometry. The atmospheric supply rates of these nutrients and the potential impact of the atmospheric deposition on the sub-tropical western Pacific will be estimated. The objectives of this research include characterization of (1) transportation mechanisms of soluble N and P in the study area, (2) identification sources of air mass by using sea-salt ions/non-sea-salt ions and NOAA air mass backtrajectories, (3) sources of atmospheric N and P by using correlation analysis, and (4) impact of atmospheric soluble N and P inputs on marine environment in this region.

Keyword(s)

大氣沉降
營養鹽
基礎生產率
高分子量有機營養鹽
低分子量有機營養鹽
atmospheric deposition
nutrient
primary production
high-molecular weight organic nutrient
low-molecular weight organic nutrient

DSpace CRIS

The Study of Atmospheric P Deposition to the Southern East China Sea: Compositions, Sources, and Relationship to N Species

基本資料

Description