Self-organizing behaviours of alluvial fan-delta system and management countermeasure, with examples from the lower Yellow River and its estuary
冲积扇-三角洲系统自组织行为与治理对策--以黄河下游及其河口地区为例

: By the analysis of the plane and section form of stream channel, the channel pattern changing in a downstream direction, the feedback each other between aggradation and elongation of channel, the growth and decline of estuarine barrier bar, and the geomorphic process of delta coast of erosion retreat pattern in the lower Yellow River, the paper brings out: (1) the function of self-adapting environment and the self-organizing behaviours of fan-delta system, which are divided into two kinds, linear and non-linear; (2) the multi-level character of the behaviours and the entirety of its functional effect on system; and (3) the cycle nature of order changing by self-organization, involving autocycle and allocycle.