Why is the gabion retaining wall is very effective ecological slope protection and slope fixing means?

Gabion retaining wall is a gabion box filled with stone, according to the topography of the site stacked retaining wall structure, retaining wall is what we commonly known as "berms", the traditional dry masonry or concrete retaining wall used in the river bank or berms, only to emphasize the strength of its efficacy, ignoring the impermeability of the river will block the natural ecological system within the cycle of the river. The traditional dry masonry or concrete retaining wall used in river bank protection or slope protection only emphasizes its strength effect, ignoring the fact that it will block the circulation of natural ecosystem in the river channel due to its impermeability, which is not suitable for adapting to the concept of ecological river management. With high-strength metal wire woven into a rectangular metal mesh filled with pebbles or blocks of stone technology to float out of the water, this is the ecological gabion process, applied to the river slope protection in the bank protection, because of its strong resistance to scouring, self-permeable flexible structure characteristics, in the man-made planting of soil and natural factors under the dual role of planting, the stone gaps continue to be filled by the soil, the plant seed will be gradually in the soil between the stones to take root and sprout, thrive, plant roots and grow, and the plant roots will not be able to grow, and the plant roots of the river. Plant seeds will gradually take root and grow in the soil between the stones, and the plant root system will firmly fix the stones and soil, which will also become the habitat of small animals. Therefore, gabion retaining wall is a very effective means of ecological slope protection and slope fixation