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首页> 外文期刊>Forest Research Papers >Assessment of tree vitality, biomass and morphology of Scots pine (Pinus sylvestris L.) root systems growing on reclaimed landfill waste after zinc and lead flotation
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Assessment of tree vitality, biomass and morphology of Scots pine (Pinus sylvestris L.) root systems growing on reclaimed landfill waste after zinc and lead flotation

机译：评估锌和铅浮选后在再生垃圾填埋场上生长的樟子松（Pinus sylvestris L.）根系的树木活力，生物量和形态

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The stability of introduced stands depends not only on aboveground but also on the belowground biomass. Results from reclaimed sites often indicate good growth of the aboveground part of stands, but data on the development of root systems are still lacking. Our aim was to assess the vitality of trees, their biomass and the morphology of the root systems of Scots pine (Pinus sylvestris L.) introduced on reclaimed landfill waste after zinc and lead flotation in Bukowno (southern Poland). The landfill site was reclaimed 20 years ago and reclamation treatments involved isolation and covering with mineral substrate layers (110–150 cm thickness) which formed a technogenic soil profile. Four research plots (10 m × 10 m) were set up in pure pine stands where soil profiles consisted entirely of flotation waste. Trees on the plots were assayed according to the Kraft and IUFRO classification system. In total, 15 trees of average growth parameters and bio-sociological position (I and II Kraft class) were selected for biomass and root system analyses and the root systems were excavated, washed, measured, weighed and photographed. Our results support pine as a useful species in reforestation of post-mining areas. However, although pine trees were characterised by good vitality, their root systems were shallow and their depth reduced by up to 60 cm due to strong skeletal loamy substrate. Individual root biomass ranged from 1.2 to 9.1 kg and was comparable to pine root biomass on other reclaimed mining sites. This indicates that during restoration, the thickness of the substrate covering the flotation waste should be increased or the amount of skeletal substrate in the top layers of technosol reduced.
机译：引入林分的稳定性不仅取决于地上，还取决于地下生物量。填海场的结果通常表明林分地上部分的良好生长，但仍缺乏根系发育的数据。我们的目的是评估锌和铅浮选后，在布科诺托（波兰南部）引入的再生垃圾填埋场中引入的树木的生命力，生物量以及苏格兰松（Pinus sylvestris L.）的根系形态。垃圾填埋场在20年前进行了开垦，填海处理涉及隔离和覆盖矿物基质层（厚度为110-150厘米），形成了可技术改造的土壤剖面。在纯松林中建立了四个研究用地（10 m×10 m），其土壤剖面完全由浮选废物组成。根据Kraft和IUFRO分类系统对地块上的树木进行分析。总共选择了15棵平均生长参数和生物社会学位置（I和II Kraft类）的树木进行生物量和根系分析，并对根系进行开挖，洗涤，测量，称重和拍照。我们的研究结果支持了松树在采后地区的重新造林中是有用的树种。但是，尽管松树具有良好的生命力，但其根系较浅，并且由于具有强大的骨骼沃土基质，其深度最多可减少60 cm。单个根生物量在1.2至9.1 kg之间，可与其他填海采矿场上的松根生物量相媲美。这表明在恢复过程中，应增加覆盖浮选废料的基质的厚度，或者减少Technosol顶层中骨骼基质的含量。

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