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首页> 外文期刊>International Journal of Marine Science >Impact of Sea Level Change of Caspian Sea on Gastropods Temporal and Spatial Variation
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Impact of Sea Level Change of Caspian Sea on Gastropods Temporal and Spatial Variation

机译：里海海平面变化对腹足动物的时空变化的影响

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Determination, localized and frequency control and distribution condition of Gastropod species in several sedimentary environment in Miankaleh territory, and their temporal and spatial variation by Caspian rapid sea level change are the main targets in this research. By selecting 8 measuring transects along the study area, 24 sediment samples and 8 water samples have been taken for biofacies and chemical properties analysis. At parallel of above mentioned subject, deformation and displacement degree of shore line of theCaspian Seaduring 38 years was evaluated by remote sensing and GIS modeling. The results show that the most important species of Gastropod totally include: 10 species associated to 3 genera of two family of Prosobranshia. Also some species of Gastropod was selected due to sedimentary environment bioindicators. Water chemical quality and quantity indicate that the salinity, EC, pH degree is different in several parts of study area. Sediments grain size gradually has decreased from the West to East region of Miankaleh territory. Instead of in the same direction near to Gorgan Golf shore line the sediment particles size have been increased. Gastropod species accumulation and concentration tendency convert to high population in saline low land and lagoon with shallow depth and gentle slope of bottom. The correlation of information layers of Gastropod species location map with shore line displacement in GIS modeling indicate vital variation more in the central and east part of Miankaleh.
机译：本研究的主要目的是确定Miankaleh地区几种沉积环境中腹足动物的种类，定位，频率控制和分布状况，以及里海快速海平面变化对它们的时空变化。通过选择研究区域内的8个测量样带，已采集了24个沉积物样品和8个水样品用于生物相和化学性质分析。平行于上述主题，通过遥感和GIS建模评估了里海沿岸38年海岸线的变形和位移程度。结果表明，腹足动物最重要的物种总共包括：与Prosobranshia的两个科的3属相关的10种。由于沉积环境生物指示剂，还选择了一些腹足动物。水的化学质量和数量表明，研究区域的某些部分的盐度，EC，pH值不同。从Miankaleh领土的西部到东部，沉积物的粒度逐渐减小。而不是沿着靠近Gorgan Golf海岸线的相同方向，增加了沉积物的粒径。腹足类动物的积累和集中趋势在盐碱低地和泻湖，浅深度和底部平缓的坡度上转化为高种群。在GIS建模中，腹足纲物种位置图的信息层与岸线位移之间的相关性表明，在Miankaleh的中部和东部，生命变化更大。

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