生物入侵对黄河流域生态系统的影响及对策
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Effects of bio-invasion on the Yellow River basin ecosystem and its countermeasures
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图2. 黄河流经九省区外来生物入侵在不同生态系统的数量分布 |
Fig. 2. The number of invasive species in different ecosystems in nine provinces along the Yellow River |
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