Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6301426 | Ecological Engineering | 2016 | 4 Pages |
Abstract
Seed burial and water regime are both crucial factors influencing seedling emergence and plant growth in wetlands and thus exert important effects on revegetation in degraded wetlands. We conducted a pot experiment to determine the effects of burial depth and water depth on the seedling emergence and growth of Scirpus planiculmis Fr. Schmidt. Seeds of S. planiculmis were buried at 0, 0.5, 1 and 2Â cm depths in plastic pots with non-sterilized sediment under exposed (â5Â cm), waterlogged (0Â cm) and submerged (5 and 10Â cm water depths relative to sediment surface) water regimes. The results showed that the percentage of seedling emergence at a burial depth of 0Â cm was enhanced under 10Â cm and 5Â cm water depths (78.89% and 81.37%, respectively) in comparison to the results under â5Â cm and 0Â cm water depths (0 and 2.22%, respectively). Seedlings did not grow through the water to the surface and no tuber formed when covered by 10Â cm of water. The total biomass per seedling was generally higher at 0.5Â cm or 1Â cm burial depths than that at other burial depths. The tuber number per seedling was highest at a 0.5Â cm burial depth, while the value was lowest at a 0Â cm burial depth. Our results provide valuable guidance for the establishment of S. planiculmis from seeds in wetland revegetation programs.
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Authors
Bo Liu, Ming Jiang, Shouzheng Tong, Wenguang Zhang, Changlin Zou, Bo Wang, Xianguo Lu,