地应力卸荷、风化、流水侵蚀、植物根劈是危岩发育的主要原因。
The developing of dangerous rock is due to release of in-situ stress in rock, aeolation, water erosion and root flerry.
与自然界中的河流一样，参观者成了这里植物生命周期的起点，流水不止，生命不息。
Like the river does in an natural environment, the visitors become the starting point in the lifecycle of plants.
在深液流水培系统中，发现植物根系腐烂现象，试解释可能造成此现象的原因。
Please interpret the possible reasons of root-rot of plants in deep flow technique.
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