The fixed sandy dune and lowland among sandy dunes act as converge of material and species flow, and they are also the source of species diffusing.
固定沙丘和丘间低地是物质流和物种流的汇，同时又是重要的物种扩散的源。
The fixed sandy dune and lowland among sandy dunes act as converge of material and species flow, and they are also the source of species diffusing.
固定沙丘和丘间低地是物质流和物种流的汇，同时又是重要的物种扩散的源。
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