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Recovery and Preservation technologies for the Environment of Tidal-Flat in the Ariake Sea

有明海滩涂环境恢复与保护技术

基本信息

批准号：
14208072
负责人：
TAKIKAWA Kiyoshi
金额：
$ 33.95万
依托单位：
KUMAMOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2005
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14208072/
关键词：
Environment of Ariake Sea Environment of Estuary Richness index of Tidal Flat Environmental reproduction Denitrification of Tidal Flat Environmental Changes of the Ariake Sea 3-D Tidal current Analysis Prevention of pollution

项目摘要

(1)Field observation was conducted inside the artificial tidal flat to model the physical, chemical and ecological system in tidal flat for the preservation or recovery of the coastal environment in Ariake Sea. The external meteorological and tidal condition controls the sub-tidal lone to the supra littoral zone has been constructed naturally, and such topography from the sub-tidal zone to the supra littoral zone has been constructed naturally, and such topographical condition preserves a steady environmental condition for habitat.(2)An automated weather station (AWS) was deployed in the tidal zone near the Kumamoto Port to observe the land and sea-surface interaction. The diurnal variation of the bottom soil temperature in the tidal zone was strongly controlled by the tidal cycle. Especially the set-up time of the exposition plays an important role in the botton soil heating and the energy and CO2 transfer into the atmosphere.(3)Numerical methods for analyzing the form of tidelands an … More d their gullies were developed. Quasi-three dimensional ocean circulation model POM and MEC were applied to the simulation of current and material transport in the Ariake Sea.(4)The sustainable method to recover the tidal flat polluted by the reductive matters were developed, due to leaching out and oxidizing the matters of the bottom soil with the oxygen rich sea water using tidal energy. Through batch test and column test in laboratory and in field column test, the ratio of COD reduction due to leaching and oxidizing of the bottom soil in column tests.(5)Sulfur cycling by sulfate metabolizing bacteria such as Allochromatium and Thiobacillus, which can grow both in anaerobic and aerobic conditions, is the main metabolism in a tidal flat. After plowing the tidal flat, it is shown that aerobic bacteria become major microorganisms instead of sulfate metabolizing bacteria in clone analysis with 16S rDNA and number of Thiobaeillus-like bacteria increase in the analysis with nirS gene.(6)This study clarified the environmental changes based on analyses of many core samples, pollen/diatom, and radiocarbon dating in late Pleistocene to Holocene of Kumamoto Plain and the southeastern part of Ariake Bay. Also analysis of diatom from the bottom sediments and the surface seawater suggested that an eutrophic condition of water in Ariake Bay started at 160-30 years ago in each area. We made clear the distribution patterns of the surface sediments and water masses in Ariake and Yatsushiro Seas, and published these characteristics as 2 sets of database.(7)Prevention of pollution of the land level side is important for environmental reproduction of Ariake Sea / Yatsushiro Sea. The consciousness investigation were performed for an area along the shore / a basin range local governments of both seas. Based on these investigations, we suggested a scheme to manage environment reproduction business and an area activation business by activation and the yield of taxes increase / finance reinforcement of the collection of environmental reproduction cooperation money and regional economy activity by introduction of a community currency with this generally.(8)To detect spatio-temporal changes of a closed sea area in detail, two techniques of geoinformatics, (1)remote sensing and (2)geostatistics, have been developed in this study. High estimation accuracy of the proposed method was demonstrated, and seasonal change patterns of the sea surface temperature in a year and also temporal changes were clarified. These methods could draw appropriate distributions of sea surface temperature and nutritive salts during the 25 years for sparse data areas. Less

(1)在人工滩涂内部进行实地观测，模拟滩涂内的物理、化学和生态系统，以保护或恢复有明海沿岸环境。外部气象和潮汐条件控制着潮下孤岛到滨海上带的地形是自然形成的，潮下带到滨上带的地形是自然形成的，这样的地形条件为栖息地保持了稳定的环境条件。(2)在熊本港附近的潮带上部署了自动气象站(AWS)，观测潮汐带的情况。陆地和海面相互作用。潮汐带底层土壤温度的日变化受潮汐周期的强烈控制。特别是暴露的建立时间对于底部土壤加热以及能量和CO2向大气的转移起着重要作用。(3)开发了分析滩涂及其沟壑形态的数值方法。将准三维海洋环流模型POM和MEC应用于有明海的海流和物质输运模拟。(4)利用潮汐能利用富氧海水淋滤氧化底层土壤物质，开发了修复被还原性物质污染的滩涂的可持续方法。通过室内批量试验、柱试验和现场柱试验，得到了柱试验中底层土壤淋洗和氧化导致COD降低的比例。(5)在厌氧和好氧条件下均能生长的异色菌和硫杆菌等硫酸盐代谢菌的硫循环是滩涂的主要代谢方式。翻耕滩涂后，16S rDNA克隆分析显示需氧菌取代硫酸盐代谢细菌成为主要微生物，nirS基因分析显示类硫杆菌数量增加。(6)本研究通过对许多核心样本、花粉/硅藻和晚更新世放射性碳测年的分析，阐明了环境变化。到全新世的熊本平原和有明湾的东南部。对海底沉积物和表层海水中的硅藻进行的分析表明，有明湾各地区的水体富营养化状况始于 160-30 年前。明确了有明海和八代海表层沉积物和水团的分布规律，并将这些特征作为两套数据库发表。(7)陆地面污染防治对于有明海、八代海的环境再生具有重要意义。意识调查是针对两海沿岸地区/盆地范围地方政府进行的。基于这些调查，我们提出了一项方案，通过引入社区货币来激活环境再生合作资金的征收和区域经济活动的税收增加/财政强化，从而管理环境再生业务和区域激活业务。（8）为了详细检测封闭海域的时空变化，已经使用了地理信息学（1）遥感和（2）地统计学两种技术。本研究中开发的。证明了该方法的高估计精度，并阐明了一年中海面温度的季节变化模式以及时间变化。这些方法可以绘制稀疏数据区域25年期间海面温度和营养盐的适当分布。较少的