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首页> 外文期刊>Forest Research Papers >Assessment of sea buckthorn (Hippopha? rhamnoides L.) long distance dispersal on the internal waste heap of the Be?chatów lignite mine
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Assessment of sea buckthorn (Hippopha? rhamnoides L.) long distance dispersal on the internal waste heap of the Be?chatów lignite mine

机译：贝沙托夫褐煤矿内部废物堆上沙棘（Hippopha？rhamnoides L.）远距离扩散的评估

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Long distance dispersal is a key process occurring in plant communities and is particularly important for pioneer species like sea-buckthorn (Hippopha? rhamnoides L.) which survival strongly depends on colonizing newly created post-disturbance habitats. Sea-buckthorn, a cluster-forming shrub, is commonly used in Poland in the reclamation of soil-less areas devastated the by mining industry and for these areas a generative expansion of planted populations is usually observed. The main objective of this study was to assess the long-distance dispersal of this species in areas previously disturbed by industrial activity. Our observations were made on a 223.75 ha large section of the internal waste heap of the Be?chatów lignite mine, Central Poland. The area was colonized by sea-buckthorn specimens originating from a population planted on the nearby external waste heap. During the search for newly established sea-buckthorn clusters, their position and size were recorded and the preferences for specific site conditions were assessed using the Ivlev’s electivity index. New specimen were observed at distances between 600 m and 3600 m from their potential seed source. The mean cluster density was 1.37 hasup?1/sup. The observed pattern of long distance dispersal is linked with to behavior of frugivorous birds. The largest cluster densities were observed along ditches (9.83 hasup?1/sup) and on open areas with less developed plant cover, while the lowest cluster density occurred in afforested areas (0.51 hasup?1/sup). Poor sandy substrate reduced the probability of plant establishment compared to richer loamy sands. There appeared to be no influence of slope aspect on the probability of sea-buckthorn establishment.
机译：长距离散布是植物群落中发生的关键过程，对于沙棘（Hippopha？rhamnoides L.）等先驱物种尤其重要，沙棘的生存很大程度上取决于新近建立的扰乱后栖息地。沙棘是一种成簇的灌木，通常在波兰开垦被采矿业破坏的无土地区，对于这些地区，通常观察到种植人口的大量繁殖。这项研究的主要目的是评估该物种在以前受到工业活动干扰的地区的远距离扩散。我们的观察结果是在波兰中部Be？chatów褐煤矿的内部废物堆中占地223.75公顷的很大一部分上进行的。该地区被沙棘标本殖民，这些标本来自附近外部废物堆上种植的种群。在搜索新建立的沙棘丛时，记录了它们的位置和大小，并使用Ivlev的选举指数评估了特定地点条件的偏好。在距其潜在种子源600 m至3600 m的距离处观察到新标本。平均簇密度为1.37 ha ？1 。观察到的长距离扩散模式与食肉鸟的行为有关。沿沟渠（9.83 ha ？1 ）和植物覆盖较不发达的空旷地区观察到最大的簇密度，而最低的簇密度则在造林地区（0.51 ha ？1 ） sup>）。与较富壤质的沙相比，较差的沙质基质降低了植物定植的可能性。似乎坡度对沙棘建立的可能性没有影响。

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