Sustainable Land Management for Mitigating Climate Change
Table 33. Technical potential of C sequestration in terrestrial biosphere through adoption of SLM technologies
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- 2. Forest Plantation 0.2-0.51 3. Tropical Savannah Ecosystem
- 6. Restoration of salt-affected soils 0.4-1.0 7. Desertification Control
134. Another co-benefit is the improvement in soil quality and increase in agronomic productivity. Appropriate SLM practices are available to enhance production and advance food security. Increase in soil C pool by 1 t/ha/yr can improve agronomic yield in developing countries by 24 to 40 million t/yr of food grains and 8 to 10 million t/yr of roots and tubers. But such increases in agronomic production can be sustainable only if long-term improvement in soil quality is maintained through specific SLM practices. 135. The large scale adoption of proven SLM technologies has been slow partly because resource-poor farmers cannot afford the needed inputs and land tenure systems are not conducive to the use of long-term restorative management. On the other hand, distorted policies and incentives continue to encourage richer farmers to use inappropriate land management practices. In the context of most developing countries, it is important to emphasize that the most prevalent nature-based livelihood of the poor and source of environmental income is small-holder agriculture (WRI et al., 2008). And the way such agriculture is practiced determines not only the quantity and sustainability of environmental income, but also the ability of the poor to enhance their resilience to environmental and socio-economic challenges. To a large degree, the sustainability of agriculture in most countries will depend on the large scale adoption of SLM practices and technologies, some of which are described in this report. But farmers and other producers will not green the land for the aesthetics; successful scaling up of SLM requires that land users (i) have secure tenure arrangements to enable longer term investments in land conservation measures, (ii) have the capacity to implement the recommended practices, and (iii) derive direct benefits from implementing the said practices on their lands. Therefore, realignment of policies and incentives, removal or lowering of institutional barriers, and access to markets including payments to farmers for providing ecosystem services, may be essential to create the much needed enabling environment to promote the adoption of proven SLM practices at scale. 136. Adaptation to and mitigation of climate variability and change provides an opportunity to scale up SLM practices in the most vulnerable countries. Climate variability and change can and does exacerbate land degradation. Many countries, especially in Africa and particularly the poorest communities living in coastal areas and drylands are most vulnerable to extreme weather events such as droughts, sea level rise, floods, and heat waves. The risks to development are greater in these poorer countries and the ability to adapt smaller. While the effects of droughts are exacerbated by armed conflicts and the pre-existence of major diseases, increased water stress will put further pressure on these triggers. The current global focus on climate change and the availability of additional funds for adaptation and mitigation thus provide an opportunity to improve the strategies and action plans for more coordinated effort at the national level on scaling up SLM practices. 137. In order to minimize the strong disconnect between research and application, there is a need to build the knowledge base and capacity to analyze the sustainable land management-growth linkages on one hand, and the SLM-climate change linkages on the other. In this context, it is crucial to support developing countries in accessing climate data and investing in transfer of technologies for SLM and climate action in key sectors (e.g., forestry, livestock, agriculture, water). Yüklə 0,86 Mb. Dostları ilə paylaş:
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