青黄带现象及其在长江中下游河段生态护岸中的应用

The green-to-yellow zone phenomenon and its application on ecological revetment in the middle and lower reaches of Yangtze River

长江中下游岸坡上的植物生长具有明显的梯级分布特征。基于青黄带的现象,描述了青黄带的形态特征,分析了青黄带的主要影响因素。结合青黄带位置,对生态护岸、护滩工程进行分区,提出"宜植则植,宜防则防"的指导思想,探讨了不同区域适宜的护岸形式。

The plants on river bank in the middle and lower reaches of Yangtze River have obvious cascade distribution features. The phenomenon is called the green-to-yellow zone. We described its morphological characteristics and analyzed the main influence factors. Based on its position, we partitioned the ecological revetment and shoal protection, put forward the guiding concept of ＂planting or protection＂, and discussed the suitable structures for different sections.