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SELECTION OF TOLERANT PLANTS AND THEIR ARRANGEMENT TO RESTORE A FOREST ECOSYSTEM DAMAGED BY AIR POLLUTION

机译:耐旱植物的选择及其对恢复被空气污染损害的森林生态系统的安排

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Plants tolerant to polluted environments were selected, based on several criteria, to restore a coastal forest ecosystem severely damaged by air pollutants discharged from an industrial complex. In addition, a restoration plan was prepared synthesizing these results and the diagnostic ecological indicators in the area for which restoration is required. Pollution-tolerant plants of 11 tree and subtree species, 10 herb species and one shrub species were selected from field surveys in the vicinity of two representative industrial complexes in Korea, Ulsan and Yeocheon. Nine species were selected for tolerance to SO_2 fumigation and six species were selected for tolerance to Al~(3+). Growth and photosynthetic responses of sample plants transplanted into polluted and unpolluted sites showed that 15 species out of the 26 sample plants showed a disposition for tolerance. Most of these are endemic plants and they are composed of diverse species in structure and function. This result implies that these tolerant species could play important roles in the restoration of the study area, which has several specific features. On the other hand, results from transplant tests indicate that a field survey is the most reasonable method for selection of tolerant plants to restore a pollution-damaged ecosystem, as was shown in another restoration program. Results of ecological analysis on vegetation map indicate that the spatial range within the first ridge is the sector for which restoration is required. This sector was classified into four zones on the basis of topographic conditions: lower and upper slopes of both slopes facing and opposite the pollution source. Guidelines for soil amelioration and arrangement of tolerant plants were prepared considering the degree of vegetation degradation, leaf damage of major plant species and soil pollution in each zone under the restoration plan.
机译:根据几个标准,选择了能够耐受污染环境的植物,以恢复沿海工业区的生态系统,这些生态系统受到了工业园区排放的空气污染物的严重破坏。此外,还制定了恢复计划,将这些结果和需要恢复的区域的诊断生态指标综合起来。在韩国蔚山和汝川两个有代表性的工业园区附近,通过实地调查选择了11种树和亚树种,10种草本植物和1种灌木植物的耐污染植物。选择了9种对SO_2熏蒸的耐受性,选择了6种对Al〜(3+)的耐受性。移植到受污染和未受污染部位的样品植物的生长和光合响应表明,在26种样品植物中,有15种表现出耐性。这些大多数是特有植物,它们在结构和功能上由多种物种组成。这一结果表明,这些耐性物种可能在研究区域的恢复中起重要作用,具有一些特殊的特征。另一方面,移植试验的结果表明,实地调查是选择耐性植物以恢复受污染破坏的生态系统的最合理方法,如另一个恢复计划所示。植被图上的生态分析结果表明,第一个山脊内的空间范围是需要恢复的区域。根据地形条件,该区域分为四个区域:面向和与污染源相对的两个斜坡的上下坡度。在恢复计划下,考虑到植被退化的程度,主要植物物种的叶片损害以及每个区域的土壤污染,制定了土壤改良和耐性植物的布置准则。

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