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Causes and extent of environmental impacts of landslide hazard in the Himalayan region: a case study of Murree, Pakistan 总被引：2，自引：2，他引：0
Pakistan is located at the cross-roads of plate boundaries, experiencing multiple hazards of earthquake, flood, drought, water-logging, salinization and recurrent landslides. This paper examines the causes and environmental impacts of frequently occurring landslide hazards in the Murree area of Pakistan??s Himalayan region. These are wide ranging in nature and in terms of the damage that result. The area under research was divided into eight blocks and randomly data collected. It was observed that landslides mostly occur along the road network and disturbed slopes. Immature geology, a wide variation in climate and degradation of the natural resource-base were found to be some of the causal factors responsible for the landslide hazards. During the past three decades, rapid expansion of urban zones contributed to the changing vulnerability of the area. The analysis revealed that a large majority of the households (75%) in the area have been directly or indirectly affected by landslide hazards. Damages to already scarce agricultural land, infrastructure and other properties are each year a regular and escalating phenomenon. Landslide size, frequency and consequent costs of damage have increased considerably. 相似文献
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This article attempts to analyse the nature, magnitude and causes of 2010 disastrous flood that seriously affected the province of Khyber Pakhtunkhwa (KPK), Pakistan. Pakistan is famous for its summer floods, but the flood of 2010 is considered to be the century’s worst. It has broken all the previous records in terms of discharge, damages and amount of rainfall occurred. Most of the meteorological stations have received rainfall above normal. Data for this study were collected both from primary and secondary sources. A total 150 questionnaires were filled in from the flood victims. However, secondary data were obtained from the Pakistan Meteorology Department, Flood Forecasting and Warning Centre, Federal Flood Commission, Provincial Disaster Management Authority, National Disaster Management Authority, Surface Water Hydrology Department and Provincial Irrigation and Drainage Authority. The analysis reveals that heavy and prolonged rainfall for four consecutive days (27–30 July) was the major cause of 2010-flood. In addition to this, the development of unusual low pressure zone over the northern Pakistan, aggradations of river bed, rapid deforestation, ponding back of river by motorway, blocking of bridges by tree trunks and subsequent bursting of temporary dams have played their role in causing the disastrous flood in almost all the rivers of KPK. This has inflicted terrible damages to human lives, standing crops, housing, infrastructure and other properties. 相似文献
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Analysis of flood causes and associated socio-economic damages in the Hindukush region 总被引：1，自引：0，他引：1
Pakistan is exposed to numerous hazards, but the problem of recurrent floods has been causing massive losses to lives and
other properties. Swat valley is no exception to it. In this paper, an attempt has been made to analyse the causes and associated
socio-economic impacts of floods on the Swat valley, Pakistan. Swat valley falls in the Hindukush region, North-west-Pakistan.
The valley has been studied with special reference to its physical and socio-economic environment. Similarly, three-sample
villages were also randomly selected from the active floodplain for micro-level analysis. The sample villages include Ningolai,
Delay and Ghureijo. All the three-sample communities are located on the right bank of river Swat. This area is located in
the active flood zone of Swat valley. The analysis revealed that in the study area, floods occur during summer season, which
is mainly caused by heavy rainfall as well as rapid melting of snow and glacier. Besides these, there are some floods intensifying
factors, which accelerate intensity of floods and enhance resultant damages in the valley. It was found that during flood
season, water overflows the natural levees and trigger tremendous loses to housing, agricultural land, standing crops and
other properties. The flood-related Government Departments have only implemented limited structural mitigation measures. However,
in addition to structural measure, land-use zoning and flood abatement strategies would largely help in reducing the adverse
consequences of this recurrent phenomenon. 相似文献
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