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首页> 外文期刊>Environmental Conservation >Distribution and impact of invasive alien plant species in Bardia National Park, western Nepal
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Distribution and impact of invasive alien plant species in Bardia National Park, western Nepal

机译：尼泊尔西部肉豆杉国家公园侵袭性外星植物种类的分布及影响

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摘要

Invasive alien plant species (IAPS) are spreading into protected areas worldwide; however, knowledge of these invasions and their impacts in Nepal's protected areas is poor. Here, the spatial distribution pattern of IAPS in Bardia National Park (BNP), Nepal, was analysed using roadside surveys and grid sampling. The impacts of the most abundant IAPS, Lantana camara, on plant communities were analysed by comparing 60 pairs of non-invaded and invaded quadrats. Twelve IAPS, including two of the most prolific species globally, L. camara and Chromolaena odorata, were recorded from BNP. The Karnali floodplain in the south-western region of the park, a prime habitat of one-horned rhinoceros, was highly invaded by the IAPS. Tree canopy and distance to road, river and settlement were the major factors affecting IAPS occurrence. Lantana camara modified plant community structure and significantly reduced plant species richness and diversity; species richness of native plants was reduced to less than half in invaded plots. Plant invasions and impacts on native plant diversity have been increasing in BNP. We recommend management interventions involving immediate eradication of C. odorata and other species with single satellite populations and control measures for other widespread species such as L. camara and Ageratum houstonianum.
机译：侵袭性外星植物物种（IAPS）正在全球范围内蔓延到保护区;然而，了解这些入侵及其对尼泊尔保护区的影响差。这里，使用路边调查和电网采样分析了Bardia国家公园（BNP）中IAPS的空间分布模式。通过比较60对非入侵和侵犯的四边形，分析了最丰富的IAPS Lantana Camara对植物群落的影响。 12个IAPS，包括全球最多的两种物种，L. Camara和Chromolaena Odorata，从BNP记录。在公园西南部地区的卡尔纳利洪泛区是一个有角犀牛的主要栖息地，由IAPS侵犯。树冠和往路，河流和定居点的距离是影响IAPS发生的主要因素。 Lantana Camara改良植物群落结构，显着降低了植物物种丰富和多样性;物种原生植物的丰富性降低到侵入地块的少于一半。 BNP的植物侵权和对本土植物多样性的影响一直在增加。我们建议涉及立即消除C. Odorata和其他物种的管理干预，并为其他广泛种类的控制措施，如L. Camara和Ageratum Houstonianum。

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