Natural Hazards: Causes and Effects - Disaster Management Center ...
Natural Hazards: Causes and Effects - Disaster Management Center ... Natural Hazards: Causes and Effects - Disaster Management Center ...
Recovery, Mitigation Problems and Strategies Solutions: General Considerations Must Have Human and Social Objectives Because desertification is a slow-onset disaster that is part of a constant climatic cyclical trend, the response must be synthesized into the values and routines of daily life. Measures to combat it must ultimately be directed toward people, toward sustaining and improving their livelihoods. Thus, measures to combat desertification must be seen as having human and social objectives. They must be inspired by an acknowledgement of dryland people’s rights to acceptable standards of health, nutrition, education, livelihood and social well-being, consistent with human dignity. Respect for Lifestyles Traditional social values must be recognized, and the life styles and ancient knowledge developed through long adaptation to the dryland environment must be respected. The approach should be an integrated one, in which proposals involving technological or environmental change are linked with social and economic measures undertaken to advance development. Community Involvement Measures to combat desertification will not succeed without the willing participation of local communities. The need to work through existing livelihood systems and established local patterns must be recognized. The involvement of the community must be sought, as by enlisting the example of community leaders. It may be necessary to create incentives toward community participation. The practicality and advantages of proposed measures should be demonstrated at the earliest stage through realistic pilot projects. The enlistment of community participation should not be thought of exclusively in terms of outside experts persuading people to do what the experts think is good for them. Local knowledge should also be enlisted. Sometimes the best procedure would be the elimination of obstacles to the good land-use practices that local people would otherwise prefer to carry out. Interdependence of Land Types Plans for the reclamation and improved use of rainfed croplands should be a part of integrated schemes for the use of functional areas such as drainage catchments. The interdependence of uplands, foothills, and valleys, with their associated land use, must be recognized. Using Maps in Planning A first step in formulating a plan is to map land types and land use at a scale appropriate to cropping (using a scale of 1:50,000 to 1:250,000, depending on conditions). The land units mapped should be classified according to potential use as determined by the existence of hazards, such as steepness and length of slope, the presence of stones or rocks, the risk of flooding, the quality of the drainage and vulnerability to wind erosion. Planning Strategies Recommendations as to how the various parts of the land should be used will constitute the plan, which must recognize appropriate limits to rainfed cropping, as determined by rainfall, terrain, soils, and relationships with adjacent land uses such as forestry or grazing. The marginal lands outside these limits should be removed from cropping by acquisition, by financial inducements or by the establishment of forest, grazing or water-catchment reserves. When
such measures involve the disruption of traditional livelihood systems, they are unlikely to succeed unless they form part of larger schemes of rural reconstruction involving appropriate changes in land tenure, the consolidation of holdings, or resettlement programs offering alternative livelihoods. Balancing Human and Environmental Needs The ideal objective is the recovery and maintenance of ecological balance in the drylands in order to sustain productivity, but this must be reconciled with the needs of local populations. Some degree of environmental disturbance, as determined by pressing human needs, must be tolerated in land management. On the other hand, it must be recognized that land-use pressures have been the major factor in the advance of desertification. Accordingly, changes in land use will be required, and these bring with them a need for corresponding social changes. Some policing of affected lands may be required, but it will not succeed without a sympathetic community response. Priorities and Enforcement Priorities in programs to combat desertification should be influenced by the severity of its impact on the populations concerned and by the degree of their vulnerability, rather than by the severity of its impact on the land alone. When the situation has been made clear, decisions can be made on priorities, which might include abandonment of lands most severely affected, and a reclamation program designed in terms of the availability of water, labor and capital. After the program has been implemented, reclaimed lands can be re-allocated, but not without clear regulations on what can be done with them. Reclamation provides an occasion for the enforcement of practices that will prevent desertification from recurring. Specific Actions Grazing To combat desertification in pastoral systems means to adopt grazing practices that will allow vegetation to recuperate. In areas too dry for rainfed cropping, the natural vegetation usually forms the most efficient pasture in terms of upkeep, grazing returns and protection of the soil surface. The maintenance of a plant cover that will sustain the pastoral system under most conditions is the obvious goal of land-use planning. Anything more—intensive reclamation, for example, by planting programs or mechanical controls—will be feasible only in restricted areas where the physical process of desertification threaten installations, communications, settlements or valuable cropland. Experience indicates that the death of livestock is chiefly due to the failure of pastures rather than of water supplies. Accordingly, conservation measures should be introduced for the control of grazing access to dryland ranges where such control does not exist, including fencing where necessary and economically feasible. Using Surveys. As a first step, surveys should be initiated to determine the useful productivity of the main varieties of dryland pasture under differing seasonal conditions, the requirements of pasture plants for successful regeneration under grazing, and the dimensions of the grazing impact of a proposed system composed of certain animals in certain numbers. Surveys must take into account the dual role of perennials as surface protectors and as fodder during drought. A logical first step in the assessment of dryland pastures is to map them, indicating their distinct topographic, soil and water conditions.
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Recovery, Mitigation Problems <strong>and</strong> Strategies<br />
Solutions: General Considerations<br />
Must Have Human <strong>and</strong> Social Objectives<br />
Because desertification is a slow-onset disaster that is part of a constant climatic cyclical trend,<br />
the response must be synthesized into the values <strong>and</strong> routines of daily life. Measures to<br />
combat it must ultimately be directed toward people, toward sustaining <strong>and</strong> improving their<br />
livelihoods. Thus, measures to combat desertification must be seen as having human <strong>and</strong><br />
social objectives. They must be inspired by an acknowledgement of dryl<strong>and</strong> people’s rights to<br />
acceptable st<strong>and</strong>ards of health, nutrition, education, livelihood <strong>and</strong> social well-being, consistent<br />
with human dignity.<br />
Respect for Lifestyles<br />
Traditional social values must be recognized, <strong>and</strong> the life styles <strong>and</strong> ancient knowledge<br />
developed through long adaptation to the dryl<strong>and</strong> environment must be respected.<br />
The approach should be an integrated one, in which proposals involving technological or<br />
environmental change are linked with social <strong>and</strong> economic measures undertaken to advance<br />
development.<br />
Community Involvement<br />
Measures to combat desertification will not succeed without the willing participation of local<br />
communities. The need to work through existing livelihood systems <strong>and</strong> established local<br />
patterns must be recognized. The involvement of the community must be sought, as by<br />
enlisting the example of community leaders. It may be necessary to create incentives toward<br />
community participation. The practicality <strong>and</strong> advantages of proposed measures should be<br />
demonstrated at the earliest stage through realistic pilot projects. The enlistment of community<br />
participation should not be thought of exclusively in terms of outside experts persuading people<br />
to do what the experts think is good for them. Local knowledge should also be enlisted.<br />
Sometimes the best procedure would be the elimination of obstacles to the good l<strong>and</strong>-use<br />
practices that local people would otherwise prefer to carry out.<br />
Interdependence of L<strong>and</strong> Types<br />
Plans for the reclamation <strong>and</strong> improved use of rainfed cropl<strong>and</strong>s should be a part of integrated<br />
schemes for the use of functional areas such as drainage catchments. The interdependence of<br />
upl<strong>and</strong>s, foothills, <strong>and</strong> valleys, with their associated l<strong>and</strong> use, must be recognized.<br />
Using Maps in Planning<br />
A first step in formulating a plan is to map l<strong>and</strong> types <strong>and</strong> l<strong>and</strong> use at a scale appropriate to<br />
cropping (using a scale of 1:50,000 to 1:250,000, depending on conditions). The l<strong>and</strong> units<br />
mapped should be classified according to potential use as determined by the existence of<br />
hazards, such as steepness <strong>and</strong> length of slope, the presence of stones or rocks, the risk of<br />
flooding, the quality of the drainage <strong>and</strong> vulnerability to wind erosion.<br />
Planning Strategies<br />
Recommendations as to how the various parts of the l<strong>and</strong> should be used will constitute the<br />
plan, which must recognize appropriate limits to rainfed cropping, as determined by rainfall,<br />
terrain, soils, <strong>and</strong> relationships with adjacent l<strong>and</strong> uses such as forestry or grazing. The<br />
marginal l<strong>and</strong>s outside these limits should be removed from cropping by acquisition, by financial<br />
inducements or by the establishment of forest, grazing or water-catchment reserves. When