Evaluation and spatial aggregation of ecological water use in each region of the Yellow River Basin

Ecological water is the basic condition to maintain river health in a water-deficient basin. The evaluation and spatial distribution of ecological are significance allocation resources under concept civilization. In this paper, connotation composition value defined from perspective ecosystem material circulation. Based on emergy theory, quantitative methods different types proposed. Combined with autocorrelation analysis method, method aggregation characteristics watershed established. We took Yellow River Basin as an example, estimated analysed its according 9 regions results showed that: Basin, single channel 17.45-24.36 yuan, sediment transport 2.42-7.28 outside 10.87-16.61 yuan. presents obvious difference space. Both inside course, high concentration areas middle lower reaches, while low which indicates that we should consolidate reaches enhance upper reaches. research have guiding for each province region.