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Survival and Recovery Growth of Riparian Plant Distylium chinense Seedlings to Complete Submergence in the Three Gorges Reservoir Region

机译:河岸植物中的生存和恢复生长枸杞幼苗在三峡库区完全淹水

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To investigate whether Distylium chinense can adapt to the artificial water-level-fluctuation zone, which has longer submergence duration and different hydrological regime, its seedlings were submitted to the un-submerged and completely submerged treatments with submergence under 2m water depth. Four different submergence durations included 15, 30, 90 and 120 d and meanwhile with two recovery growth durations of 15 and 60 d after de-submergence. The survival, main stem length, number of epicormic shoots, number of leaf showing chlorosis/senescence, stem basal diameter, aboveground biomass, belowground biomass, root/shoot ratio and total biomass were determined at the end of the submergence experiment. In addition, the recovery growth rate of seedlings was calculated after a 60-day recovery period. The results showed that D. chinense had the high survival and good recovery growth after long-term submergence, which indicated that D. chinense is a relatively high submergence-tolerant species. Thus, D. chinense can be considered as one of the native pioneer tree species in the revegetation and restoration of water-level-fluctuation zone in Three Gorges Reservoir region, China.
机译:调查蚊母树楸是否能适应人工水位消落区,其具有较长的持续时间淹没和不同的水文情势,其幼苗提交联合国淹没,完全淹没处理与下2m处理深度淹没。四种不同的乳液持续时间包括15,30,90和120d,同时脱乳后两种恢复生长持续时间为15和60d。在潜水试验结束时测定了生存期,主茎长,表现氯化/衰老,茎基直径,地上生物量,下面的生物质,根/芽比和总生物质的叶片数。此外,在恢复期60天后计算幼苗的恢复生长速率。结果表明,D.Chinense在长期潜水后具有高生存和良好的康复生长,表明D.Chinense是一种相对较高的潜水耐受性物种。因此,D.Chinense可以被认为是中国三峡水库区水位波动区的植入和恢复的天然先锋树种之一。

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