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

(1)在人工潮滩内进行了现场观测，模拟了潮滩的物理、化学和生态系统，以保护或恢复有赖海口的海岸环境。外部气象和潮汐条件控制着潮下孤岛到滨上带的自然形成，从潮下带到滨上带的地形是自然形成的，这种地形条件保持了稳定的栖息地环境条件。(2)在熊本港附近的潮汐带部署了一个自动气象站(AWS)来观测海陆相互作用。潮间带底层土壤温度的日变化强烈地受潮汐周期的控制。尤其是博览会的启动时间对底层土壤的加热以及能量和二氧化碳向大气的转移起着重要的作用。(3)潮滩和…形态的数值分析方法他们的沟壑也更发达了。将准三维海洋环流模式POM和MEC应用于阿里亚克海流和物质输运的数值模拟。(4)提出了利用潮汐能淋洗和氧化底层土壤物质的还原物质污染滩涂的可持续恢复方法。通过间歇试验、室内立柱试验和野外立柱试验，得出了立柱试验中底层土壤的淋溶和氧化作用对COD的降解率。(5)异色杆菌、硫杆菌等硫酸盐代谢细菌的硫循环是潮滩硫酸盐代谢的主要代谢方式，在厌氧和好氧条件下都能生长。翻耕滩涂后，16S rDNA克隆分析表明，需氧细菌取代硫酸盐代谢细菌成为主要微生物，NIRS基因分析表明，类硫杆菌的数量增加。(6)通过对熊本平原晚更新世至全新世的大量岩心样品、花粉/硅藻和放射性碳测年的分析，阐明了熊本平原和有利湾东南部晚更新世至全新世的环境变迁。此外，对底层沉积物和表层海水中的硅藻的分析表明，阿里亚克湾的水在160-30年前开始富营养化。明确了有宅海和八越海表层沉积物和水团的分布规律，并将这些特征发布为两套数据库。(7)防止陆面污染对有宅海/八越海的环境繁殖具有重要意义。意识调查是对沿海地区/盆地范围内的两个海域的地方政府进行的。在这些调查的基础上，我们提出了通过激活来管理环境再生产业务和区域激活业务的方案，并通过引入共同体货币来加强环境再生产合作资金的征收和区域经济活动的税收增加/财政。(8)为了更详细地探测封闭海域的时空变化，本研究发展了两种地理信息学技术：(1)遥感和(2)地质统计学。结果表明，该方法具有较高的估计精度，揭示了海温年内的季节变化规律和时间变化规律。对于资料稀少的海区，这些方法可以得到25年海面温度和营养盐的合理分布。较少

(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