<trans-title>Flood risk assessment in Bangladesh, India and Myanmar based on the AHP weight method and entropy weight method</trans-title>

Yuanyuan LIU; Shaoqiang WANG; Xiaobo WANG; Dong JIANG; H Ravindranath N; Rahman Atiq; Mar Htwe Nyo; Vijitpan Tartirose

doi:10.11821/dlyj020190679

Geographical Research, Volume. 39, Issue 8, 1892(2020)

Flood risk assessment in Bangladesh, India and Myanmar based on the AHP weight method and entropy weight method

Yuanyuan LIU1...2, Shaoqiang WANG1,2,3,*, Xiaobo WANG1,2, Dong JIANG1,2, H Ravindranath N4, Rahman Atiq5, Mar Htwe Nyo6 and Vijitpan Tartirose7 |Show fewer author(s)

Author Affiliations

¹Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China

²College of Resources and Environment at University of Chinese Academy of Sciences, Beijing 100049, China

³School of Geography and Information Engineering, China University of Geosciences, Wuhan 430074, China

⁴Centre for Sustainable Technologies, India Institute of Science, Bangalore 560012, India

⁵Bangladesh Centre for Advanced Studies, Dhaka 1212, Bangladesh

⁶Yezin Agricultural University, Naypyitaw 15000, Myanmar

⁷United Nations Environment Programme - International Ecosystem Management Partnership, Beijing 100101, China

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Figures & Tables(10)

Fig. 1. Distribution of altitude and river systems in BIM region

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Fig. 2. Monthly precipitation from 2010 to 2017 in BIM region

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Fig. 3. Index system of flood risk assessment

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Fig. 4. Spatial distribution of hazard indexes in BIM region from 1980 to 2016

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Fig. 5. Spatial distribution of sensibility indexes in BIM region

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Fig. 6. Land use mapping in BIM region in 2013

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Fig. 7. Spatial distribution of vulnerability indexes in BIM region

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Fig. 8. Spatial distribution of regional flood risk

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Table 1. Weight of flood risk index

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Table 1. Weight of flood risk index

目标层	指标层	子指标层	权重
目标层	指标层	子指标层	层次分析法	熵权法	组合法
洪涝灾害风险指数	危险性(0.4)	雨季降雨量	0.5000	0.7373	0.590
	危险性(0.4)	暴雨天数	0.5000	0.2627	0.410
	敏感性(0.4)	坡度	0.2587	0.0537	0.190
		高程	0.3209	0.0234	0.222
		土壤可蚀性	0.0929	0.2717	0.152
		植被覆盖度	0.0929	0.3198	0.168
		河网密度	0.2346	0.3315	0.267
	易损性(0.2)	人口密度	0.6942	0.0026	0.629
		地均GDP	0.2103	0.0091	0.191
		土地利用	0.0955	0.9883	0.180

Table 2. Ratios of flood risk levels in different countries

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Table 2. Ratios of flood risk levels in different countries

风险等级	孟加拉国比例(%)		印度比例(%)		缅甸比例(%)		孟印缅全区比例(%)
风险等级	AHP	AHP_熵权	AHP	AHP_熵权	AHP	AHP_熵权	AHP	AHP_熵权
低	6.60	7.75	31.99	31.72	57.61	57.98	35.56	35.45
较低	0.96	1.48	5.93	7.92	4.86	6.91	5.57	7.51
中等	11.99	14.28	30.48	30.31	17.82	15.78	27.64	27.23
较高	73.13	65.87	31.34	29.69	18.95	17.02	30.65	28.76
高	7.32	10.61	0.26	0.36	0.75	2.31	0.59	1.05

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Yuanyuan LIU, Shaoqiang WANG, Xiaobo WANG, Dong JIANG, H Ravindranath N, Rahman Atiq, Mar Htwe Nyo, Vijitpan Tartirose. Flood risk assessment in Bangladesh, India and Myanmar based on the AHP weight method and entropy weight method[J]. Geographical Research, 2020, 39(8): 1892

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