考虑防灾减灾能力的洪涝灾害灾损率曲线构建——以里下河地区的李中镇为例

doi:10.18306/dlkxjz.2016.02.009

Abstract

Abstract:

As an important part of resilience, disaster prevention and mitigation capabilities of the exposure units are a key consideration in disaster economic loss assessment. Based on the data collected from Lizhong Town in the Lixiahe region of Jiangsu Province, the initial depth-damage scatter diagrams and fitted curves were drawn for residential property, industrial property, business, infrastructure, and agriculture. Then the modified depth-damage scatter diagrams and fitted curves in line with the actual damage situation were drawn by taking into consideration disaster prevention and mitigation capabilities. The results show that: (1) At the significance level of 0.05, the correlation between submersion depth and depth-damage rate under different scenarios for residential property, industrial property, business, infrastructure, and agriculture is a power function; (2) Taking into consideration disaster prevention and mitigation capabilities, economic losses of different exposure units caused by flood disaster decreased. Residential property flood losses were reduced by 34% at the submersion depth of 3 m; industrial property losses were reduced by 17% at the submersion depth of 2 m; business losses were reduced by 24% at the submersion depth of 3 m; and infrastructure losses were reduced by 11% at the submersion depth of 2 m. The influence of disaster prevention and mitigation capabilities on residential property flood losses was most obvious. This study may serve as a useful supplement for research on flood depth-damage relation and provide references for disaster prevention and mitigation decisions and disaster risk management in similar areas.

Key words: flood disaster, disaster prevention and mitigation capabilities, depth-damage curve, Lixiahe region, China

Xianhua WU, Lei ZHOU, Ge GAO, Zhonghui JI, Ji GUO. Flood depth-damage curves for urban properties considering disaster prevention and mitigation capabilities: Evidence from Lizhong Town, Lixiahe region, China[J].PROGRESS IN GEOGRAPHY, 2016, 35(2): 223-231.

Figures/Tables 6

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References 24

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调研类型	统计单元	调研对象	样本数量	总数量	占总体的百分比/%
住宅区	家庭	居民	145	9637	1.50
农业区	行政村	行政村负责人	15	15	100.00
工业区	工厂	工业负责人	4	26	15.38
商业区	零售店铺	商业负责人	30	60	50.00
公共设施区	事业单位	事业单位负责人	28	32	87.50

统计项目	住宅区		工业区		商业区		公共设施区		农业区
统计项目	灾损率1	灾损率2	灾损率1	灾损率2	灾损率1	灾损率2	灾损率1	灾损率2	灾损率1
Pearson 相关性	0.784^**	0.648^**	0.786	0.835	0.789^**	0.776^**	0.723^**	0.662^**	0.838^**
相伴概率（双侧）	0.000	0.000	0.214	0.165	0.000	0.000	0.000	0.000	0.000
样本数	123	123	4	4	30	30	28	28	15

水深/m	住宅区			商业区
水深/m	灾损率1	灾损率2	差值	灾损率1		灾损率2		差值
0.5	0.07	0.07	0.00	0.04		0.04		0.00
1.0	0.19	0.13	0.06	0.12		0.09		0.02
1.5	0.33	0.18	0.15	0.22		0.16		0.06
2.0	0.48	0.24	0.24	0.35		0.24		0.11
2.5	0.55	0.29	0.26	0.49		0.32		0.17
3.0	0.68	0.34	0.34	0.66		0.41		0.24
水深/m	工业区			公共设施区					农业区灾损率
水深/m	灾损率1	灾损率2	差值	灾损率1	灾损率2		差值		农业区灾损率
0.5	0.02	0.02	0.00	0.04	0.01		0.03		0.07
1.0	0.12	0.10	0.02	0.11	0.05		0.07		0.16
1.5	0.31	0.23	0.08	0.20	0.11		0.09		0.26
2.0	0.59	0.42	0.17	0.31	0.20		0.11

Flood depth-damage curves for urban properties considering disaster prevention and mitigation capabilities: Evidence from Lizhong Town, Lixiahe region, China

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