| Improved AHP method and its application in lake environmental comprehensive quality evaluation a case study of Xuanwu Lake, Nanjing, China |
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| 作者姓名： | 张燕 张洪 高翔 彭补拙 |
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| 作者单位： | Department of Urban and Resources Sciences Nanjing University，Department of Urban and Resources Sciences，Nanjing University，Department of Urban and Resources Sciences，Nanjing University，Department of Urban and Resources Sciences，Nanjing University，Nanjing 210093，Nanjing 210093，Nanjing 210093，Nanjing 210093 |
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| 摘 要： | The relative importance of each pollution factor in analytical hierarchy process (AHP) method comes from pooling expert opinions in general. Because expert opinions are based on information and judgment criteria, determining their weight may lead to uncertainty.. Therefore, an improved AHP method had been developed. The process of the improved AHP method involved four key procedures. The weights of pollution factors were completely related to the objective monitoring data through the standardization of these procedures. The environmental comprehensive quality of water and sediment of Xuanwu Lake, Nanjing, China had been evaluated. The environmental quality comprehensive indices (EQCI) of the water in 1991-1995 and 1996-2000 were 3.32 and 1.85, respectively, indicating that the water quality improved. The EQCI of the sediment in 1995 and 2000 indicates that the sediment contamination decreased from 1995 to 2000. Such results agreed with the fact that the lake had been under comprehensive control. However, with the classical AHP method, the EQCI of the sediment in the northwestern part of the lake may have indicated that sediment contamination increased from 1995 to 2000. The discrepancy may have resulted from the judgment difference of the experts. The improved AHP method can avoid arbitrariness of subjective judgment and can reflect the real influential factors of environment pollution in different periods or regions.
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| 关 键 词： | 轮转顺序 南京市 玄武湖 环境质量 |
| 收稿时间： | 2 December 2007 |
| 修稿时间： | 2006-01-23 |
Improved AHP method and its application in lake environmental comprehensive quality evaluation—a case study of Xuanwu Lake,Nanjing, China |
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| Zhang?Yan,Zhang?Hong,Gao?Xiang,Peng?Buzhuo.Improved AHP method and its application in lake environmental comprehensive quality evaluation a case study of Xuanwu Lake, Nanjing, China[J].Chinese Journal of Oceanology and Limnology,2007,25(4):427-433. |
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| Authors: | Zhang Yan Zhang Hong Gao Xiang Peng Buzhuo |
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| Institution: | Department of Urban and Resources Sciences, Nanjing University, Nanjing, 210093 |
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| Abstract: | The relative importance of each pollution factor in analytical hierarchy process (AHP) method comes from pooling expert opinions in general. Because expert opinions are based on information and judgment criteria, determining their weight may lead to uncertainty.. Therefore, an improved AHP method had been developed. The process of the improved AHP method involved four key procedures. The weights of pollution factors were completely related to the objective monitoring data through the standardization of these procedures. The environmental comprehensive quality of water and sediment of Xuanwu Lake, Nanjing, China had been evaluated. The environmental quality comprehensive indices (EQCI) of the water in 1991-1995 and 1996-2000 were 3.32 and 1.85, respectively, indicating that the water quality improved. The EQCI of the sediment in 1995 and 2000 indicates that the sediment contamination decreased from 1995 to 2000. Such results agreed with the fact that the lake had been under comprehensive control. However, with the classical AHP method, the EQCI of the sediment in the northwestern part of the lake may have indicated that sediment contamination increased from 1995 to 2000. The discrepancy may have resulted from the judgment difference of the experts. The improved AHP method can avoid arbitrariness of subjective judgment and can reflect the real influential factors of environment pollution in different periods or regions. |
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| Keywords: | seating order weight improved AHP method environmental quality comprehensive evaluation Xuanwu Lake |
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