鄂西南淡水水鳖科植物的分布

鄂西南淡水水鳖科植物的分布 THE GEOGRAPHIC DISTRIBUTION OF FRESHWATER HYDROCHARITACEAE IN SOUTHWESTERN HUBEI 姚作五 Yao Zuowu 1 2 first-author 周凌云 Zhou Lingyun 1 2 Department of Environmental Science Wuhan University Department of Environmental Science Wuhan University Department of Environmental Science, Wuhan University Department of Environmental Science, Wuhan University Department of Environmental Science Wuhan University Department of Environmental Science Wuhan University 生长在鄂西南的淡水水鳖科植物有水车前属、水筛属、黑藻属、水鳖属和苦草属,计6种1变种。它们主要分布在海拔800m以下的水田和池塘中,多见于pH<7的水体。在一定的海拔高程内,随海拔增高,该科植物种数和分布量均有减少的趋势。这与该科植物的生境密切相关。鄂西南水鳖科植物区系与江西,江苏以及日本的同类区系关系十分密切。 Distributed in southwestern Hubei are five genera with six species and one variety, they occur mainly in paddy fields and ponds（pH usually betow 7） below 800m alt. The number and distributional amount of the species tend to decrease with the altitude increasing. The distribution of this family is chiefly correlated with the habitats of the family. The flora of Hydrocharitaceae in southwestern Hubei has a close relationship with the same flora in Jiangxi, Jiangsu and Japan. 水鳖科 鄂西南 分布 Hydrocharitaceae distribution southwestern Hubei 1988-04-01 2021-04-01 4