Carbon cycle in coral reefs and its change with environment

珊瑚礁的碳循环及其随环境的变化

基本信息

批准号：
08041100
负责人：
KAYANNE Hajime
金额：
$ 7.49万
依托单位：
University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08041100/
关键词：
Coral reef Carbon dioxide Environmental change Coral Australia Palau 炭素循環

项目摘要

Coral reefs are related with global carbon cycles through photosynthesis and calcification. The mode of carbon cycles in reefs have been changed with formation of reef geomorphology accompanying with environmental changes for the last several thousand years. We have made researches on reef geomorphological/biological zonations and production rates, sea water and carbon fluxes across ocean-reef-lagoon system and formation of coral reefs for the last 10,000 years in the Great Barrier Reef and Palau Islands-typical continental and oceanic barrier reef systems. We have obtained the following results : 1) Barrier reef system is divided into the barrier reef flat and lagoon : the barrier reef flat is subdivided into reef front, reef crest, aligned coral pavement and sand flat from sea to ocean with geomorphological features and coral community structure ; 2) These reef zonation can be identified by satellite and aerial remote sensing data ; 3) The barrier reef systems have been formed with the rising sea from 8,000 to 4,000 years ago and reef zonation have been formed with the stabilized sea since 4,000 years ago ; 4) Net organic production 167 mmol C m^<-2> day^<-1>, which exceeds net calcium carbonate production 130 mmol C m^<-2> day^<-1>, exists on barrier reef flat ; 5) Organic products are delivered to outer ocean as dissolved and particulate forms accompanying with tidal currents.

珊瑚礁通过光合作用和钙化与全球碳周期有关。礁石中的碳循环模式随着过去几千年来随着环境变化的形成而改变了礁石地貌。我们已经对礁石的地貌/生物学分区和生产率，跨海洋园林系统的海水和碳通量进行了研究，并在过去的10，000年中在大障碍礁和帕劳群岛典型的大陆和海洋屏障礁系统中进行了珊瑚礁的形成。我们获得了以下结果：1）屏障礁系统被分为屏障礁平坦和泻湖：屏障礁公寓被细分为礁石前部，礁石冠，对齐的珊瑚珊瑚人行道，从海洋到海洋，从海洋到海洋，具有地质形态学特征和珊瑚社区结构； 2）这些礁石分区可以通过卫星和空中遥感数据来识别； 3）障碍礁系统是随着8,000年前上升到4，000年前的增长，自4000年前以来，稳定的海洋已经形成了礁石分区； 4）净有机生产167 mmol c m^<-2>天^<-1>，超过碳酸钙生产130 mmol c m^<-2> Day^<-1>，存在于障碍礁平面上； 5）有机产品作为溶解和颗粒形式伴随潮流的溶解和颗粒形式输送到外海洋。