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In the subtropical cropland soil, decompositionrate of organic carbon in paddy soil due to ground water is periodical water-logginghuangnitian>gley huangnitian>submerged huangnitian; decomposition rate of organiccarbon in dry land soil is vegetable soil in Nanjing>red soil in Yujiang>fluvo-aquic soilinYujiang.
亚热带农田土壤中,水稻土受地下水升降的影响,有机碳分解速率顺序:潴育黄泥田>潜育黄泥田>淹育黄泥田;旱地土壤有机碳分解速率曲线依次为:南京菜园土>余江红壤>余江潮土。
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On the mudflat, in general, the current velocity reached peck value during the flood and ebb phase in single tidal cycle.
潮间带周期性淹水区域水深、流速的变化过程是潮滩水动力过程的基本组成部分,也是潮流与泥沙相互作用的基础。
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The" high water","middle water",and "Low water" in some mangrove literature should be " high water spring tide"," high water middle tide", and "high water neap tide" in tidology terminolo-gy.
潮汐和浸淹形成的环境梯度控制了红树林在潮滩上的总体分布和群落结构,是红树林能量特征最重要的组成部分「,成为红树林生态学研究的重要内容。
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Study shows that environment evolution and eustatic change of Holocene in this area may be divided into 6 stages:① early stage of early Holocene, 9 100~10 900 aBP,when sea level was low and this area was an oxidizing environment or oxidizing-reducing transition environment;② late stage of early Holocene, 8 000~9 100 aBP, sea-level rising,...
研究表明,本区全新世环境演化分为6个阶段:①早全新世早期,10900~9100aBP,海平面较低,尚未淹没本区,为近岸氧化环境或氧化—还原过渡环境;②早全新世晚期,9100~8000aBP,海水上涨,本区时淹时退,为浅海或潮坪环境,生物钻孔发育;③中全新世主体,8000~4150aBP,海平面快速上升,完全淹没,Fe2+/Fe3+介于0.7395~1.9123之间,为全新世中最高段,表明还原程度强、全球气候变暖;④中全新世后期,4150~2850aBP,海水有所下降,仍为浅海环境,Fe2+/Fe3+较高,多在1.0以上;⑤晚全新世,2850~1310aBP,海平面进一步下降,本区时常暴露,其中2150~1310aBP以还原环境为主,为潮下带,2150~2850aBP以氧化—还原过渡环境为主,为潮间带;⑥1855AD以来,海平面基本稳定,稍有上升,为现代黄河三角洲沉积时期。本区全新世至少存在5期冷热交替的旋回性气候变化。
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A new method was presented using satellite remote sensing data in the calculation of topography and flooding at littoral zone. Flooding lines were drawn from high resolution satellite remote sensing images at different tidal level, and the topography of littoral zone was calculated with these lines. Then, the littoral zone topography was applied in the calcuation of flooding, which was checked with the satellite remote sensing images.
提出了利用卫星遥感资料计算潮间带地形和漫滩的方法:选取一组不同潮位的卫星遥感图像,提取潮间带遥感淹水线,由遥感淹水线和数值模式结合推算潮间带地形,将推算的地形用于海水漫滩计算,并用遥感淹水线检验漫滩计算结果。
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Intertidal:潮间带
1.潮间带 (intertidal) 或沿岸带 (1ittoralzone) 即与陆地相接的地区. 虽然该带内的生物几乎都是海洋生物,但那里实际上是海陆之间的群落交错区,其特点是有周期性的潮汐. 生活在潮间带的生物除要防止海浪冲击外,还要经受温度和水淹与暴露的急剧变化,