Effects of burial depth and water depth on seedling emergence and early growth of Scirpus planiculmis Fr. Schmidt
Effects of burial depth and water depth on seedling emergence and early growth of Scirpus planiculmis Fr. Schmidt
复制标题
埋深和水深对三棱草出苗和早期生长的影响。
DOI：
10.1016/j.ecoleng.2015.11.026
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发表时间：
2016
影响因子：
3.8
通讯作者：
Lu Xianguo
中科院分区：
文献类型：
--
作者：
Liu Bo;Jiang Ming;Tong Shouzheng;Zhang Wenguang;Zou Changlin;Wang Bo;Lu Xianguo
种子埋藏和水分状况是影响湿地幼苗出苗和植物生长的关键因素，对退化湿地的植被恢复具有重要影响。通过盆栽试验，研究了不同埋深和埋深对板栗苗出苗和生长的影响。施密特。ofS种子。planiculus被埋在0、0.5、1和2厘米深的塑料盆中，在暴露（- 5厘米）、淹水（0厘米）和淹没（相对于沉积物表面的5和10厘米水深）的水状态下，放置未消毒的沉积物。结果表明：埋深为10 cm和5 cm的苗木出苗率比埋深为−5 cm和0 cm的苗木出苗率分别为78.89%和81.37%，埋深为0 cm和0 cm的苗木出苗率分别为0和2.22%；幼苗没有通过水生长到表面，当被10厘米的水覆盖时，没有形成块茎。0.5 cm和1cm埋深的幼苗生物量总体高于其他埋深。每苗块茎数在0.5 cm埋深时最高，在0 cm埋深时最低。我们的研究结果对s的建立具有重要的指导意义。湿地植被恢复计划中植物种子的浮游植物。
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 ofScirpus planiculmisFr. Schmidt. Seeds ofS. planiculmiswere buried at 0, 0.5, 1 and 2 cm depths in plastic pots with non-sterilized sediment under exposed (−5 cm), waterlogged (0 cm) and submerged (5 and 10 cm water depths relative to sediment surface) water regimes. The results showed that the percentage of seedling emergence at a burial depth of 0 cm was enhanced under 10 cm and 5 cm water depths (78.89% and 81.37%, respectively) in comparison to the results under −5 cm and 0 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 10 cm of water. The total biomass per seedling was generally higher at 0.5 cm or 1 cm burial depths than that at other burial depths. The tuber number per seedling was highest at a 0.5 cm burial depth, while the value was lowest at a 0 cm burial depth. Our results provide valuable guidance for the establishment ofS. planiculmisfrom seeds in wetland revegetation programs.