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rare plant
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rare plant
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农学
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rare plant
稀有植物
有广义和狭义之分。广义稀有植物指那些在经济、科学、文化和教育等方面具有重要意义而现存数量稀少的植物,又称珍贵稀有植物,如金花茶(Camellia petelotii)。狭义稀有植物指分布范围狭窄,数量极少,如普陀鹅耳枥(Carpinus putoensis,仅存一株),但在特定生存条件下种群的生存和繁衍相对稳定;或者虽有较大的分布范围,但只是零星分布的植物,如中国蕨(Aleuritopteris grevilleoides),金钱松(Pseudolarix amabilis)。通常使用其广义概念。
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nature tourism
nature ventilation air exchange rate
nature-views of contemporary natural scientists
Nature-views of contemporary western philosophers
nature vs. nurture
nature worship
Nature·Society·Human Art Photography Exhibition
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naughts and crosses
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Nauru
Nauru Agreement
Nauru Agreement Concerning in the Management of Fisheries of Common Interest
Nauru Agreement,Nauru Agreement Concerning Cooperation in the Management of Fisheries of Common Interest
Nauruans
Nauru International Airport
Nausicaa of the Valley of the Wind
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