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Quantificational analysis on progress of river water quality in China 被引量:3
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作者 YUN Yi,ZOU Zhihong,FENG Wei,RU Mai School of Economics and Management,Beihang University,Beijing 100191,China. 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2009年第6期770-773,共4页
In order to understand the dynamic change of water quality in a specific period of time,a type of possibility transition matrix based on the theory of Markov process was established.The transition possibility with a w... In order to understand the dynamic change of water quality in a specific period of time,a type of possibility transition matrix based on the theory of Markov process was established.The transition possibility with a weight to calculate the degree of absolute advancement was given based on the result of water quality evaluation.The concept of relative advancement was presented.It was used to evaluate the extent of water quality changed in a period of time.The method was used to calculate the degrees of relative advancement for 4 rivers in China,and the results were analyzed. 展开更多
关键词 water quality evaluation possibility transition matrix Markov process degree of advancement
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