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首页> 外文期刊>Estuarine Coastal and Shelf Science >Present-day dune environment dynamics on the coast of the Swina Gate Sandbar (Polish West coast)
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Present-day dune environment dynamics on the coast of the Swina Gate Sandbar (Polish West coast)

机译：Swina Gate Sandbar海岸（波兰西海岸）的当今沙丘环境动态

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摘要

In present day Polish coastal dunes' development, heavy storms and human activity play a significant role. Natural or almost natural dune processes and accumulation of the coast is observed only in a few places, such as the Swina Gate Sandbar (also called barrier). As far as the spit number and morphology of the youngest ridges is concerned, they are different in the western, the middle and the eastern part. In the western part, ridges are smaller and closer to each other, thus depressions between them are narrower. Moreover, beach is widely covered by small hillocks. In the middle part, ridges are higher but narrower. Likewise, depressions between them are wider. The beach is wide and covered by large numbers of plants and dune hillocks. In the eastern part, dunes are also high but tend to be narrow, with steep seaside slope having the most frequent occurrence. Depressions and beach are narrow. The number of plants is not considerable compared with other parts. Since 1997 an increase of the new dune ridge on the still developing beach has been observed. Each year the beach is becoming wider and covered by larger number of plants. Plants lead to the development of new dunes and increase of the sandbar. The new foredune ridge consists of several hillocks joined into irregular ridge. This new first ridge is also shaped by storm waves but still becomes a real ridge. This development may be caused by continuous sand supply and by very strong north and west winds. A lot of different dune psammophyties on the beach are in favour of sand fixing on the increasing beach far from the first ridge. Only on part of spit with a tendency to erosion, accumulation of the dunes is not to be observed. Additionally, human activity stops aeolian accumulation and plant growth on the beach.
机译：今天，波兰沿海沙丘的发展，暴风雨和人类活动起着重要作用。仅在少数几个地方可以观察到自然或几乎自然的沙丘过程以及海岸的堆积，例如Swina Gate Sandbar（也称为障碍物）。就最年轻的山脊的吐口数和形态而言，它们在西部，中部和东部是不同的。在西部，山脊较小且彼此靠近，因此山脊之间的凹陷较窄。此外，海滩被小丘所覆盖。在中部，山脊较高但较窄。同样，它们之间的凹陷更宽。海滩很宽，被许多植物和沙丘丘所覆盖。在东部，沙丘也很高，但往往很狭窄，陡峭的海边斜坡最常发生。抑郁症和海滩狭窄。与其他部分相比，植物的数量并不多。自1997年以来，已观察到仍在发展中的海滩上的新沙丘脊增加了。每年，海滩变得越来越宽，被大量植物覆盖。植物导致了新沙丘的发展和沙洲的增加。新的Foredune山脊由数个不规则的山脊组成。这个新的第一山脊也受到暴风雨的影响，但仍然变成了真正的山脊。这种发展可能是由于持续不断的沙土供应以及非常强烈的北风和西风引起的。海滩上许多不同的沙丘黏附物都有利于将沙子固定在远离第一个山脊的不断增加的海滩上。仅在一部分有侵蚀倾向的唾液中，不会观察到沙丘的堆积。此外，人类活动阻止了风沙在海滩上的积累和植物的生长。

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