Wang Yu

 (Yellow River Engineering Consulting Co., Ltd. Zhengzhou, Henan, 450003)

Abstract: Since River system is of dissipative structure, the evaluation of river health can be studied from point of the systematic view. With application of system and information theories, this paper presents a method to evaluate the river health based on system order degree entropy. The River Health Index is educed with consideration of multiple subsystems or health targets of the river. An example of Yellow River is given, in which the river health factors and its threshold parameters are put forward, and the current health situation are evaluated.

Keywords: river, health, entropy, evaluation