[1]XIE Baoni,QIN Zhanfei,LI Zhen,et al.Spatial and Temporal Variation of Ecological Risk for Flood and Drought in Hebei Province from 1995 to 2015[J].Research of Soil and Water Conservation,2021,28(05):196-204.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 05
Page number:
196-204
Column:
Public date:
2021-08-20
- Title:
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Spatial and Temporal Variation of Ecological Risk for Flood and Drought in Hebei Province from 1995 to 2015
- Author(s):
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XIE Baoni1,2,3,QIN Zhanfei1,3,LI Zhen1,3,YANG Huicai1,3
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(1.School of Land Science and Space Planning,Hebei GEO University,Shijiazhuang 050031,China; 2.Key Laboratory of Ecosystem Network Observation and Modeling,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China; 3.Hebei Province Key Laboratory of Sustained Utilization and Development of Water Resources,Hebei GEO University,Shijiazhuang 050031,China)
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- Keywords:
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geography; flood and drought disasters; regional ecological risk assessment; spatial and temporal change; Hebei Province
- CLC:
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Q149; P954
- DOI:
-
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- Abstract:
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Flood and drought disasters are two of the most serious agro-meteorological disasters in Hebei Province. In order to explore the temporal and spatial transformation process of the ecological risk of floods and droughts in Hebei Province in the past 20 years,we explored the spatial and temporal patterns of the ecological risks of floods and droughts in Hebei Province during 1995—2015 according to the regional ecological risk assessment theory. We estimated the ecological risks using GIS techniques based on multi-source data such as temperature,rainfall,land use,GDP and population density,with the drought and flood disasters as the risk sources and the six landscape types(i. e.,cultivated land,woodland,grassland,water area,construction land,and unused land)as risk receptors. The results showed that there was a moderate overall ecological risk level of flood and drought disasters in Hebei Province during 1995—2015; specifically,the area at moderate or lower ecological risk levels accounted for 51.39%~93.30% of the total area of the study area,and the area at high or very high ecological risk levels accounted for 6.70%~48.61% of the total area of the study area during the study period; there was significant spatial heterogeneity of the ecological risk in the study area during the past two decades; the areas with low ecological risk were primarily located in the northern part and Taihang Mountains of the study area,accounting for 57.87%~74.10% of the total area of the study area,while areas with high and very high ecological risk were mainly located in the southern plain areas of the study area,accounting for 4.90%~20.08% of the total area of the study area; there was remarkable spatial and temporal variation of the ecological risk in the study area during the study period; the ecological risk level showed a declining trend in approximately 37.70% of the study area during the past two decades,these mainly covered northern and central part of the study area,central part of Chengde and Tangshan,where the ecological risk primarily shifted from the low level to the very low level and from the moderate level to the low level; the overall ecological risk of flood and drought disasters in Hebei Province in the past 20 years was relatively low and showed a decreasing trend. All these findings in this study can provide significant scientific basis for decision-making on the disaster risk management and environmental management.