Monday, April 6, 2020

ADDRESSING CLIMATE CHANGE IMPACTS ON AGRICULTURE SYSTEM THROUGH ADAPTATION MEASURES


SHREE BHAGAVAN THAKUR* and GYANENDRA KARKI **
Shree Bhagavan Thakur e-mail: shreebhagavanthakur@gmail.com; and Gyanendra Karki e-mail: gyanendra.karki@ gmail.com
Abstract
Agriculture accounts for nearly onethirds of the gross domestic product and two-thirds of labor employment of Nepal. Agriculture sector is disproportionately vulnerable to the impacts of climate change which is adversely impacting agriculture productivity and food security. Climate change adaptation is emerging as an important developmental challenge in Nepal. This paper approaches to enhance understanding on the climate change adaptation measures for addressing impacts of climate change on agriculture system. Further, this will inform farmers, policy makers, planner and stakeholders for climate change adaptation planning to build adaptive capacity and promote resilient to agriculture sector in Nepal. This document provides guidance on the identification and selection of adaptation options that can be used to respond to climate risksThis study is aimed at supporting decision and policy makers who are faced with identifying and appraising the effectiveness of adaptation measures that address identified climate risks.
Key words: Adaptation, agriculture, climate change, farmers, and resilient.
Introduction
The Nepalese agricultural sector is very heterogeneous in natural conditions and farming systems and highly vulnerable to climate change. Agriculture in Nepal is highly vulnerable to climate change due to climate variability and related risks of the natural disasters. Large proportion of marginal farmers with small landholding, limited irrigation, low income level, limited institutional capacity, and greater dependency of agriculture on climate-sensitive natural resources increase the degree of vulnerability (Regmi and Adhikari, 2007; World Bank, 2008).

Nepal is one of the most vulnerable countries to climate change impacts. Climate and its variability is already affecting the Nepal's agriculture sector. The climate related hazards like floods, droughts, hailstorms, heat, and cold waves; and pest and diseases, soil erosion, deforestation and desertification are recurring and posing severe threats to the sector (FAO, 2016).

Agriculture in Nepal, accounts nearly one-thirds of the national gross domestic product (GDP), represents 13 % of total foreign trade and has engaged two-third of the country’s economically active population.  Agriculture is still accounted as the major economic sector of Nepal (CBS 2012). About 21 % of the total land is cultivated, of which 54 % has irrigation facilities with only 0.68 ha per household land holding size. Over 50 % of farmers are small holders cultivating land usually less than 0.5 ha. Agriculture in Nepal is mostly rain-fed and climate sensitive.

Climate vulnerability is commonly interlinked with poverty and food insecurity, not all poverty alleviation efforts constitute effective reduction in climate vulnerability and not all adaptation will automatically lead to immediate improvements in food security (FAO, 2011).

The projected changes in production is equivalent to a 15.5% decrease in 2020, 5.6% increase in 2050 and 9.7% decrease in 2080 in terms of present level of production. Resulting, the national loss in food production is expected to be 5.3% in 2020, 3.5% in 2050 and 12.1% in 2080. The loss of food grain thus accounts to 435 thousand metric tons in 2020, 302 thousand metric tons in 2050 and 1040 thousand metric tons in 2080 (MoSTE, 2014 a).
The observed negative climate change impacts on agriculture like Eastern Tarai faced rain deficit in the year 2005/06 by early monsoon and crop production reduced by 12.5% on national basis. Nearly 10% of Agriculture- land were left fallow due to rain deficit but mid-western Tarai faced heavy rain with floods, which reduced production by 30% in the year (Regmi, 2007).
Similarly, the climate change affects the food security adversely at all four levels-global, national, household and individual and also affects the entire food system from production, processing, distribution, consumption and utilization (Pant, 2012).

Rising temperature increases lignification of plant tissues and reduces the digestibility (Minson, 1990), reducing meat and milk production in range-based livestock production system. Increased heat stress is another pathway affecting the livestock production. The increased heat alters heat exchange between animal and environment affecting the feed intake and metabolism (SCA, 1990; Mader and Davis, 2004). Climate change also increases mortality and morbidity of animals particularly from the climate sensitive infectious diseases (Patz et al., 2005b) and reduction in the productivity of rain-fed crops used for livestock and poultry feed; reduction in productivity of forage crops; reduced water availability and more widespread water shortages; and changing severity and distribution of important human, livestock and crop diseases (Thornton et al. 2009).

Adaptation to climate change has emerged as a challenge to achieving and sustaining the development outcomes as mitigation is not taking place as needed (Eriksen 2011). Adaptation to climate change is also emerging as an important developmental challenge in Nepal and globally. To address climate change risks and vulnerabilities, a set of mutually integrated strategies are necessary at different sectors and levels (Regmi and Bhandari 2013).

Aims and Objectives
This study aims at enhancing understanding on the climate change adaptation and providing guidance on the identification and selection of adaptation options that can be used to respond to climate risks in agriculture. It also supports decision and policy makers who are faced with identifying the effectiveness of adaptation measures for developing climate change resilient agriculture in Nepal.
Materials and methods
This paper is based on the review of published reports, journal articles and research papers.
For this, information was gathered from several national and international documents. Similarly, data has been collected through national and international data source. It is done through the process of skimming and scanning. Although the climate change has adversely affected every sector, this paper is mainly focused on the adaptation measure to impacts of climate change on agriculture system. Only the climate change adaptaion measures and resiliest measures related to agriculture system and agriculture sector regarding climate change has been included. This paper has been written with the objective of sharing the knowledge and information about the impacts of climate change on agriculture system to build adaptation options for resilient agriculture system.

Discussions
Concept, definition and context
Generic meaning of Adaptation is that certain generalized structures possesses by all the organization which can be used for survival in any kind of environment. Each of these structures can be improved upon considerably to meet the requirements of one or the other kind of different environment. These improvement in structure in any system of the body in living organisms which help in adjusting it to the new environment are called adaptation. (A text book of Pre-university biology, vol 1)
Adaptation in biology, process by which an animal or plant species becomes fitted to its environment; it is the result of natural selection’s acting upon heritable variation. Even the simpler organisms must be adapted in a great variety of ways: in their structure, physiology, and genetics, in their locomotion or dispersal, in their means of defense and attack, in their reproduction and development, and in other respects.

In early 17th century, three meanings of adaptation in biology are: firstly, in a physiological sense- an animal or plant can adapt by adjusting to its immediate environment. Secondly, in reproductive sense, either to the process of becoming adapted or to the features of organisms that promote reproductive success relative to other possible features which is driven by genetic variations among individuals. The process of adaptation occurs through an eventual change in the gene frequency relative to advantages conferred by a particular characteristic.  Thirdly, in natural selection sense, adaptation feature evolved by natural selection for a specific function.[i]
All biologists agree that organismal traits commonly reflect adaptations. However, much disagreement has arisen over the role of history and constraint in the appearance of traits as well as the best methodology. A trait may be a function of history rather than adaptation.
The most accepted definition of adaptation is an adjustment in natural or human systems in response to actual or expected climatic stimuli or their effects, which moderates harm or exploits beneficial opportunities. Various types of adaptation can be distinguished, including anticipatory and reactive adaptation, private and public adaptation, and autonomous and planned adaptation (IPCC TAR, 2001a)
The process of adjustment to actual or expected climate and its effects. In human systems, adaptation seeks to moderate harm or exploit beneficial opportunities.  In natural systems, human intervention may facilitate adjustment to expected climate and its effects. The following two types of the adaptation actions should be addressed at policy and program level.
       Incremental adaptation: Adaptation actions where the central aim is to maintain the essence and integrity of a system or process at a given scale.
       Transformational adaptation: Adaptation that changes the fundamental attributes of a system in response to climate and its effects.
Most synonymously used term the Resilience is defined as the capacity of a social-ecological system to cope with a hazardous event or disturbance, responding or reorganizing in ways that maintain its essential function, identity, and structure, while also maintaining the capacity for adaptation, learning, and transformation (IPCC2014).

Policy arrangement for climate change adaptation
Response to climate change in Nepal has been growing in recent years with an effort to cope with the changing situation and build resilience capacity into adaptation to climate change. In climate induced vulnerability context, Nepal developed policy level provision regarding to adaptation policy called National Adaptation Programme of Action to climate change (NAPA).[8] The NAPA document opened the door to act adaptation activities into country. Under the provision of national level policy, Local Adaptation Plan of Action (LAPA) national framework [9] devised out by government. It only mentioned the provision of the implementation mechanism at district or village development committee level to act climate change adaptation.
In 2010, Parties established the Cancun Adaptation Framework (CAF) that provides opportunities to address medium- and long-term adaptation needs in the developing countries (both LDCs and non-LDCs). It has established a process to enable LDC Parties to formulate and implement national adaptation plans (NAPs), building upon their NAPA experience, as a means to identifying and implementing medium- and long-term adaptation needs.

In Paris agreement: Article 7: Adaptation – several paras related to NAP
Para 1: establishment of the global goal on adaptation of enhancing adaptive capacity, strengthening resilience and reducing vulnerability to climate change.
Para 5: Adaptation action should follow a country-driven, gender-responsive, participatory  and  fully  transparent  approach,  taking  into  consideration vulnerable groups, communities and ecosystems, and should be based on and guided by the best available science  and, as appropriate, traditional knowledge, knowledge of indigenous peoples and local knowledge systems, with a view to integrating adaptation into relevant socioeconomic and environmental policies and actions, where appropriate.

 The Durban decision 2011 defined the objectives to reduce vulnerability to the impacts of climate change, by building adaptive capacity and resilience and to facilitate the integration of climate change adaptation, in a coherent manner, into relevant new and existing policies, programmes and activities, in particular development planning processes and strategies, within all relevant sectors and at different levels, as appropriate. It also outlined four key elements (Lay the groundwork and address the gaps, Preparatory elements, Implementation strategies and Reporting, monitoring and review) and several steps which may be undertaken as appropriate.

Nepal has also adopted and agreed to formulate NAP and accordingly initiated the process following given NAP guideline. MoFE is a focal point of UNFCC for the formulation of NAP and initiated the NAP process in seven thematic working groups and two cross-cutting areas.

Concept
Climate change adaptation is a response to global warming and climate change, that seeks to reduce the vulnerability of social and biological systems to relatively sudden change and thus offset the effects of global warming. Even if emissions are stabilized relatively soon, global warming and its effects should last many years, and adaptation would be necessary to the resulting changes in climate. Adaptation is especially important in developing countries since those countries are predicted to bear the brunt of the effects of global warming. That is, the capacity and potential for humans to adapt i.e. adaptive capacity, is unevenly distributed across different regions and populations, and developing countries generally have less capacity to adapt (Schneider et al., 2007). Furthermore, the degree of adaptation correlates to the situational focus on environmental issues.[5]Therefore, adaptation requires the situational assessment of sensitivity and vulnerability to environmental impacts.[6]
Adaptive capacity is closely linked to social and economic development (IPCC, 2007).[7] The economic costs of adaptation to climate change are likely to cost billions of dollars annually for the next several decades, though the amount of money needed is unknown. Donor countries promised an annual $100 billion by 2020 through the Green Climate Fundfor developing countries to adapt to climate change. However, while the fund was set up during COP16 in Cancún, concrete pledges by developed countries have not been forthcoming.[8][9][10] The adaptation challenge grows with the magnitude and the rate of climate change.
Another response to climate change, known as climate change mitigation (Verbruggen, 2007)[11] is to reduce greenhouse gas (GHG) emissions and/or enhance the removal of these gases from the atmosphere (through carbon sinks).[12] Even the most effective reductions in emissions, however, would not prevent further climate change impacts, making the need for adaptation unavoidable (Klein et al., 2007).[13] In a literature assessment, Klein et al. (2007) assessed options for adaptation. They concluded, with very high confidence, that in the absence of mitigation efforts, the effects of climate change would reach such a magnitude as to make adaptation impossible for some natural ecosystems. Others are concerned that climate adaptation programs might interfere with the existing development programs and thus lead to unintended consequences for vulnerable groups.[14] For human systems, the economic and social costs of unmitigated climate change would be very high.[15]
Principles of Climate change adaptation
Climate Change Adaptation applies to policies, practices and projects which can either reduce risks and / or realise opportunities associated with climate change. Adaptation affects all levels of decision-making, all regions as well as most sectors. Adaptation needs to be structured as a cross-sectoral, multi-level and inter-regional activity bringing together actors with different knowledge, interests and values. Adaptation is not simply about doing more, it is about new ways of thinking and dealing with risk and hazards, uncertainty and complexity. Exploring suitable adaptation pathways to address existing vulnerabilities and increase resilience will require a process of learning by people and organisations. Although every adaptation process needs to be context specific, several key principles are commonly recognized to support good adaptation.

CORE PRINCIPLES OF CLIMATE CHANGE ADAPTATION  (FAO-Adapt Framework Programme on Climate Change Adaptation)
 Food security: Climate change is likely to severely threaten the achievement of food security and thus impact the ability of the international community to achieve its foremost Millennium Development Goal (MDG1), to reduce extreme poverty and hunger. Therefore, FAO’s work on climate change adaptation has a strong focus on actions with potential to reduce vulnerability and ensure food and nutrition security.
Mainstream climate change into development: With mainstreaming, adaptation is increasingly becoming an integral part of FAO’s support and services to member countries. With appropriate planning, climate change adaptation can be integrated into sustainable development initiatives and into food security, agriculture, forestry and fisheries planning and programming, resulting in climate-smart agriculture and other developmental benefits.
Support country-driven processes:  FAO’s activities on adaptation are delivered on a demand-driven basis, based on the specific needs of countries. FAO supports the preparation and implementation of national adaptation programmes and priorities, such as National Adaptation Programmes of Action (NAPAs), UNFCCC National Communication Reports, and other adaptation planning instruments or programmes that build adaptive capacity and resilience into human and natural systems.
Build synergies between adaptation and mitigation: FAO promotes an integrated approach to build synergies among climate change adaptation and mitigation, food security and sustainable development. Promoting climate-smart agriculture that can increase productivity and resilience (adaptation), reduce or remove GHGs (mitigation), and enhance achievement of national food security and development goals is at the centre of FAO’s support to its member countries. The goal is to find comprehensive solutions that combine strategy, policy, institutional and technical options.
Promote ecosystem approach: FAO supports an ecosystem approach to policy development and natural resource management. This approach includes incentives that consider food production along with ecosystem capacity and resilience, equity in access to resources, and integration of sectors that use common resources. FAO has relevant technical expertise that it calls upon to support adaptation activities, e.g. in agro-ecosystems, forests and rangelands, inland waters, and coastal and marine ecosystems. The ecosystem approach also calls for multidisciplinary cooperation.
Design participatory, gender-sensitive and location-specific adaptation activities: Through its long experience in people-centered work on agriculture, rural development and climate change, FAO recognizes that adaptation work also calls for demand-driven, location-specific approaches and requires participatory modalities that consider gender-specific vulnerabilities, needs and capabilities as well as the priorities of Indigenous Peoples and vulnerable communities.

Forms of Adaptation action measures
Legal arrangement and facility: constitution, policy, act, rules and regulation, directives, guideline, strategy, plan, projects, programme, etc.
Preventive measures: pre warning system, weather forecasting, weather advisory services, groups, community organization, natural resources and utilization, etc.
Technology:
Knowledge based: indigenous crop and animal breed, traditional practices, skill, and experiences, etc.
Science based: resistant / tolerant variety and animal breed, different climate resilient practices, machine and equipment.
Infrastructure: market, go-down, roads, canal, like physical structure.
Curative measures: Subsidy, assistance, insurance, financial services, compensation, etc.

National plans priorities
The 13th plan stressed on capacity building of user committee for making sustainable, efficient and effective management and execution of irrigation systems. It concentrated on environment friendly, climate change adaption, participatory development and employment creation while developing, designing and implementing irrigation infrastructures. The mainstreaming of environment, climate change and hazard risk management during the formulation, operation and execution of irrigation projects. Similarly, 14th plan realized that risk management of climate change induced effects on water availability is the major challenge of irrigation sector. It also stressed on ensuring user's participation for sustainable management as well development and extension of irrigation system for irrigation development master plan, achieving goals of Agriculture Development Strategy (ADS) and adaptation of climate change. For supplying the irrigation facility, efficient use of irrigation system and participatory management is focused.
Policy provision

The term is FAO has coined "Climate-Smart Agriculture” at the Hague Conference on Agriculture, Food Security, and Climate Change in 2010. The definition says “sustainably increases productivity, enhances resilience, reduces/removes greenhouse gas emissions, and enhances achievement of national food security and development goals” (FAO 2010).
NAP Development pathways 2017, Based the climate change vulnerability and risk to the sectors and sub-sectors, the key areas of thematic interventions are as follows:
·       Innovative research for development of adaptive variety/ breed, seed, technology, disease and pest management,
·       Water use efficient technology development of irrigation and water management
·       Development of climate smart/ resilient technology and mechanization in agriculture and livestock
·       Climate information system like early warning system of climate hazards
·       Improvement of grain/ food storage, distribution system
·       Conservation of agro-biodiversity and landraces/breed
·       Promotion of insurance and financial services mechanism
·       Management of climate information and sectoral information system
·       Development and strengthening of the farmers network and institutions
·       Promotion of crop diversification, food diversification, Food utilization.

Table 4: Climate change adaptation strategies in irrigation system
Drought
Sedimentation caused by flood
Water scarcity
·  Impoundment for the groundwater recharge
·  River linking of adjoining rivers for regular run-off flow
·  Development of river basin transfer
·  Development of integrated services to water
·  Planting of trees for shade to water resources
·  Snow/dew harvesting in mountainous region
·  Improve irrigation systems and their efficiency
·  Improve use/store of rain and snow water.
·  Use marginal and waste water resources.
·   Change irrigation practices.
·  Reduce tillage to lessen water loss
·  Incorporation of manures and compost,
·  Practice of cover cropping increase soil organic matter to improve water retention.
·  Alter agronomic practices
·  Pre-warning system.
·  River linking of adjoining rivers for regular run-off flow
·  Tree planting for erosion control and soil conservation
·  Improvement of land management (Sustainable land management practices-SALT, bio-engineering, Agro-forestry, etc.)
·  Extension of sustainable agriculture soil and water conservation
·  Improve flood management
·  Improvement of design of canal and other irrigation system
·  Maintain hydro-met data system
·  Pre-warning system.
·  Develop  and  implement  watershed  management  plans  for  critical watershed areas
·  Increase the efficiency of use and reduce losses of irrigation water
·   Assessment of current water management practices for climate resilience and identify for improvement
·  Identify and map areas vulnerable to droughts and flood hazards and prepare disaster risk management plans
·  Design   rational   intra-basin   and   trans-basin   strategies   to   harness periodic surpluses of water in storage facilities
·  Lining irrigation canals would help reduce water loss
·  Tech­nologies as modern drip or sprinkler irrigation sys­tems would improve the application of water to crops
·  Effective water management through pricing, taxes, subsidies, and quotas to reduce water waste
·   Providing farmers incentives to adopt resource-efficient technologies and penalizing for unsustainable practices.

In addition,  Hu, (2011) reported that adapting to scenarios of reduced water availability may involve increased investments in water infrastructure to provide enough irrigation to maintain existing agricultural production, or a shift from current production to less water-consuming crops.

In India, Alam et al. (2007) also revealed that a combination of traditional and innovative technological approaches is used to manage drought risk. Technological management of drought may be development and use of drought tolerant cultivars, shifting cropping seasons in agriculture, flood and drought control techniques in water management; is combined with model-based seasonal and annual to decadal forecasts with early warning system to take appropriate drought protection measures.

Integrating activities in the national strategy for CCA and DRR, including drought risk loss insurance; improved water use efficiency; adopting and adapting existing water harvesting techniques; integrating use of surface and groundwater; upgrading irrigation practices at both the farm level and on the delivery side; developing crops tolerant to salinity and heat stress; changing cropping patterns; altering the timing or location of cropping activities; diversifying production systems into higher value and more efficient water use options; and capacity building of relevant stakeholders in vulnerable national and local areas (Abou Hadid, 2009; El-Quosy, 2009).

Key drivers and Adaptation options/ strategies for Crop production and horticulture


Drought, Dry spell
Floods,  Crop inundation

Land slide
Pest and diseases incidence
    Cold waves
Adjustment of planning dates and crop variety;
Crop relocation;
Improved land management
Identification, screening, development and use of drought tolerance variety
Expansion of rainwater harvesting, water storage and conservation technology, water reuse, water use and irrigation efficient.
Development of agronomic management practices for irrigation management
Extension of sustainable agriculture soil and water conservation
Demonstrations of stress reducing technologies
Crop insurance and financial service
Early warning system, weather forcasting system.
Adjustment of planning dates, and crop and variety;
Identification, screening, development and use of flood tolerance variety
Extension of integrated farming system and technologies
 Crop insurance and financial services
Erosion control and soil protection through tree planting
Improved land management (Sustainable land management practices-SALT, bio-engineering, Agro-forestry, etc.)
Extension of sustainable agriculture soil and water conservation
Developing legislation for cultivation of riverbeds and shrub lands
Development of legislation for landscaping and land use
Crop insurance and financial services

Identification of landraces tolerant to  biotic and abiotic stresses
Develop and standardize  agronomic management practices for integrated pest management
Development of agronomic management practices for integrated plant nutrient management
Crop insurance and financial services
  • Identification, development and use of crop and variety for cultivation in cold condition
  • Crop insurance and financial services






















Table 3: Adaptation options/ strategies for Livestock and poultry


Heat stresses
Drought

Land slide
Heat stress/ waves
Cold waves
·     Develop schemes for livestock shed improvement for reducing heat stress
·     Develop strategies for promoting alternate bio-energy using agricultural residues





  • Improvement in rangeland management and fodder production
  • Use of drought tolerance genotype of fodder and tree
  • Develop technologies for rangeland improvement and forage improvement and increased production of fodder and forage crops

  • Erosion control and soil protection through tree planting
  • Improved land management (Sustainable land management practices-SALT, bio-engineering, Agro-forestry, etc.)
  • Extension of sustainable agriculture soil and water conservation
  • Developing legislation for cultivation of riverbeds and shrub lands
  • Development of legislation for landscaping and land use

  • Develop schemes for livestock shed improvement for reducing heat stress
  • Develop strategies for promoting alternate bio-energy using agricultural residues





























Understanding climate change resilience
Resilience building through knowledge, advocacy, research, and training by making information on drought risk accessible (UNISDR, 2007a). Building climate resilience at the community level through reducing risk and facilitating adaptation like improving access to water through region-specific activities such as rainwater harvesting and creation of water pools from precipitation and flood waters, for use for animals, pastureland, and crop irrigation purposes; improving the quality of livestock by introducing local selective breeds with higher productivity and more resilient to climate impacts; strengthened veterinarian services to reduce animal diseases and parasites and cross-border epidemic infections; and using traditional herding knowledge and techniques for adjusting animal types and herd structure to make appropriate for the carrying capacity of the pastureland and pastoral migration patterns. The formation of herders’ community groups and establishment of pasture co-management teams (Ykhanbai et al., 2004), along with better community-based disaster risk management, could also facilitate effective DRR and CCA.

Conclusion
Climate change is inevitable to Agriculture is the back bone of the development and economic prosperity. Accelerating climate change has high impacts in agriculture sector. The reduction of agriculture and livestock productivity is affecting food production and enhancing poverty of Nepal. It has become crucial for immediate, short, medium and long-term adaptation planning. It is imperative to identify approaches that strengthen ongoing economic development efforts, reduce climate change vulnerability and enhance the adaptive capacity of farmers, their households and their communities. There is no alternative to adaptation measure for frequent and severity of climate extreme events. The adaptation measures are essential for making agriculture resilient through research, policy arrangements, institutional capacity building and substantial investment in this sector. This paper will support to link experts, policy makers, planners, farmers and agriculture related institutions towards making resilient agriculture for increased food production and prosperity of the country. The fine tuning them to respond to the current challenges will benefit not only the farmers but also the entire humanity.

Acknowledgement
We would like to express our sincere appreciation to the Ministry of Agriculture and Livestock Development and Food and Agriculture Organization- Climate Change Adaptation in agriculture sector project for providing the opportunity for this study. We also thank to Ministry of Forest and Environment, sectoral departments, and NAP project team for their sincere help and cooperation.

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[i] https://www.britannica.com/science/adaptation-biology-and-physiology

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