心滩守护工程是较为普遍的河道整治措施,以往多采用软体排等结构型式,对心滩局部河床底质与水生生境影响较大。依托倒口窑心滩守护工程,本文研究提出了一种针对心滩的生态固滩方法：通过引入客土,迁入生命力强的三叶草、芦苇、狗牙根作为先锋植被,并在先锋植被繁育至足够丰度之前,采用草绳织网进行临时性的辅助固土,避免客土大量流失。工程实践表明,试验项目实施一年后,先锋植被生长茂盛,且已出现其它植物种类,生态效果较好,具有较好的推广价值。
Abstract
Structures like flexible concrete mattress which influence the local substrata and the aquatic environment a lot are widely used in a type of common river regulation projects,the central bar protection． Based on the project of Daokouyao central bar protection,this study puts
forward an ecological shoal consolidation method aiming at the channel central bar: through the introduction of out-soil and the tough pioneer vegetation including clover,reed as well as Bermuda grass． Before the vegetation breeds flourish enough,the straw -rope weavings are
temporarily used as soil fixed meshes in case it is washed away． The results show that the engineering practice has a good ecological effect．The pioneer vegetation has thrived and other plant species have emerged a year after the implementation which both illustrate the method＇s
suitability for generalization．
关键词
心滩守护 /
植被 /
生态固滩 /
冲刷实验
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Key words
Central bar protection /
vegetation /
ecological shoal consolidation /
scouring test
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