期刊论文

中文

植物科学学报

2095-0837

2009

27

4

391-396

10.3969/j.issn.2095-0837.2009.04.010

国务院三峡建设委员会办公室项目（SX2008-005）资助；

本校为其他机构

硬秆子草(Capillipedium assimile)、双穗雀稗(Paspalum distichum)和狗牙根(Cynodon dactylon)在经受与三峡水库水位运行节律基本一致的水淹时间和水淹持续时期,但淹水深度(0、 5、 15和25 m)不同的处理后,对其进行了恢复生长和光合特性研究.结果表明:(1) 3种草本植物之间相比,狗牙根的存活率最高,所有处理植株存活率达到了100%;硬秆子草和双穗雀稗随着水淹深度的增加,存活率呈降低趋势,5 m深处理存活率达到了100%,15 m和25 m深处理存活率在80%以上.(2) 3种草本植物恢复生长后的叶片净光合速率Pn 、蒸腾速率Tr、气孔导度Gs、水分利用效率WUE和表观CO_2利用效率CUEapp与未淹对照相比没有显著差异...

Vegetation reconstruction and restoration in the newly formed water-level-fluctuation zone （WLFZ）, an anthropogenic-impacted ecosystem, is of great significance in ecological safety in the Three Gorges Reservoir Area of the Yangtze River. Selection of appropriate plant species that are adaptive to long-time and deep submergence is crucial for vegetation reconstruction and restoration in the water-level-fluctuation zone （WLFZ）. In this study, a split-plot design was used. Three grass species （ Cynodon dactylon, Cap 15 and 25 illipedium assi...