Ichthyosaurs had a higher chance of being preserved than did terrestrial creatures because, as Marine animals, they tended to live in environments less subject to erosion.

鱼龙比起陆地的动物有更大的几率被保存下来，因为它们作为海洋动物常生活在腐蚀性较小的环境中。

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At the sea coast or in the Marine environment, the chloride erosion is the main factor causing reinforcement corrosion of tunnel lining.

在近海或海洋环境下，氯离子侵蚀是引起隧道衬砌结构钢筋锈蚀的主要因素。

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For example, the increasing spread of desertification, land erosion, the extinction of plant and animal species, pollution of Marine and river pollution.

例如，日益蔓延的荒漠化，土地的侵蚀，动植物物种的灭绝，海洋与河流道的污染等问题。

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An initiative to assess erosion and sediment transport to marine, lake or reservoir environments aimed at the creation of a holistic approach for the remediation and conservation of surface waters, closely linking science with policy and management needs.

UNESCO: International Hydrological Programme (IHP)

Experts gave an overview of current threats and challenges, including declining coral reefs and acidification (Scott Doney), sea level rise (Joe Appiott), coastal erosion, land-based sources of marine pollution, and overfishing (Brittany Baschuk).

UNESCO: Social and Human Sciences