Climate Change Adaptation Planning Research Articles

Mainstreaming Climate Change Adaptation into Sectoral Plans: An Assessment Based on the Logical Framework Approach

Although climate change adaptation (CCA) and spatial planning are relevant to promoting climate resilience, Italy shows a certain lack of studies focused on the coherence between national CCA objectives and sectoral plans. We aim to investigate such a research gap and propose and apply a logical framework approach (LFA)-based method to assess the coherence of sectoral plans adopted in Sardinia (Italy) with the missions of the Italian National Climate Change Adaptation Plan (NCCAP). We apply LFA to analytically scrutinize sectoral plans by reconstructing their strategic framework—including objectives and actions—and comparing them to the CCA objectives established by the NCCAP. The purpose is to provide the regional administrations with a methodological approach and tangible findings, suggesting the need for updating plans lacking CCA contents and contributing to the drafting or updating of the regional strategy for CCA. The method adopted in this study allowed us to identify plan objectives and actions that fully or partially integrate NCCAP objectives. Then, plans partially (or not at all) consistent with the NCCAP can be integrated with CCA contents. This is relevant to promoting climate resilience issues in plans that have clear effects in terms of spatial, landscape, and urban planning, according to different governance levels.

Climate impacts and adaptation strategies for coastal erosion, aquaculture, and tourism along the Adriatic side of Apulia region

This study addresses the imperative need for adaptation strategies to climate impacts in coastal areas, particularly vulnerable to climate change effects. Under the Interreg project “AdriaClim,” our research aims to provide a comprehensive account of predicted climate impacts and corresponding adaptation measures for three key sectors for the coastal economy of the Puglia region (Southern Italy): coastal erosion, aquaculture, and tourism. Analyzing regional climate projections, predicted climatic anomalies for Apulia have been delineated. Together with a comprehensive description of the investigated sectors, the expected sectoral climate impacts have been identified. The respective adaptation measures for each sector have been evaluated in terms of coherence with the studied context and effectiveness, among those proposed in the literature. In aquaculture, climate change may influence ecosystem structure, functionality, production cycles, infrastructure, and organism physiology. Integrated multitrophic aquaculture (IMTA) emerges as a solution to enhance the resilience of Apulian aquatic production systems to climate change. For coastal tourism, the vulnerability to various climate impacts is emphasized. These impacts can directly influence tourist flows or indirectly alter the attractiveness of the Apulian Adriatic coast. Given the sector's strong ties to anthropic, natural, and cultural elements, a comprehensive adaptive approach proves most effective. Concerning coastal erosion, results underscore the prevalence of numerous stretches of eroding low coastline, with future projections indicating scenarios of widespread retreat along the southern Adriatic coast. Consequently, protective, and coastal management measures become imperative. The analyses and the obtained results serves as a valuable knowledge framework essential for formulating a climate change adaptation plan for the Apulian Adriatic coast, aligning with the regional authorities' orientations.

Climate Change Adaptation Planning: Breaking Down Barriers through Comprehensive Educational Frameworks

The planning profession sits at the forefront of local climate adaptation action. Yet, novel challenges exist for coordinating and implementing comprehensive actions. Through key actor interviews, this qualitative study examines the role of planners in navigating these challenges. In order to understand how planners are being prepared for this role, attention to how climate adaptation features in required courses across accredited planning programs in Canada is included. This study finds that while planners excel at a range of key skills related to communication, in the context of climate adaptation, these strengths are constrained by a lack of technical knowledge.

A Systematic Literature Review on Climate Change Adaptation Planning for Archaeological Site Management and the Prevalence of Stakeholder Engagement

AbstractThis article presents a systematic literature review of publications from 2014 to 2021 using “archaeological site” and “climate change” as keywords, in addition to several terms representing forms of stakeholder engagement. Articles were thematically coded to explore trends at the intersection of climate change, archaeology, and local and Traditional stakeholders. Results show that nearly half of the selected publications did not include local and Traditional stakeholder engagement in studies related to climate adaptation planning for archaeological sites. Synthesis of the results with insights gained from other literature on decolonizing archaeology showed that potential reasons for this gap include (1) the academic publishing culture, (2) archaeology as a predominantly Western discipline, and (3) increasingly available tools for climate change adaptation planning for archaeological sites. This article calls on the academic community to consider holistic stewardship using a landscape approach and to use climate change adaptation planning to elevate local and Traditional stakeholder input and values.

Upsurge of dengue outbreaks in several WHO regions: Public awareness, vector control activities, and international collaborations are key to prevent spread.

Dengue, the world's fastest-growing vector-borne disease, has skyrocketed in the 21st century. Dengue has harmed human health since its first known cases among Spanish soldiers in the Philippines to its 21st-century outbreaks in Southeast Asia, the Pacific, and the Americas. In light of the current circumstances, it is imperative to investigate its origin and prevalence, enabling the implementation of effective interventions to curb the upsurge. Our study examines the history of dengue outbreaks, and evolving impact on public health, aiming to offer valuable insights for a more resilient public health response worldwide. In this comprehensive review, we incorporated data from renowned databases such as PubMed, Google Scholar, and Scopus to provide a thorough analysis of dengue outbreaks. Recent dengue outbreaks are associated with rapid urbanization, international travel, climatic change, and socioeconomic factors. Rapid urbanization and poor urban design and sanitation have created mosquito breeding places for dengue vectors. Also, international travel and trade have spread the pathogen. Climate change in the past two decades has favored mosquito habitats and outbreaks. Socioeconomic differences have also amplified the impact of dengue outbreaks on vulnerable communities. Dengue mitigation requires vector control, community engagement, healthcare strengthening, and international cooperation. Climate change adaptation and urban planning are crucial. Although problems remain, a comprehensive vector control and community involvement plan may reduce dengue epidemics and improve public health in our interconnected world.

Incorporating Climate Adaptation into a Forest Management Plan: A Case Study on the Research and Teaching Forest of Michigan Technological University

Abstract We incorporated climate adaptation into a forest management plan for Michigan Technological University’s Ford Forest, a 2,000-ha property in Michigan’s Upper Peninsula used for education, research, and timber revenues. Our process was an opportunity to test the existing climate adaptation literature, pulling from multiple sources to meet the diverse needs of the institution at the time the plan was created. We present outcomes as well as lessons learned summarized in a series of broad takeaway messages. (1) Climate adaptation is a means to an end. The end must be defined and is made up of critical values and an adapted state. (2) Given the instability inherent in climate change, achieving adaptation means adjusting forest attributes in response to change but also preparing for unforeseen outcomes via adaptive management. (3) Decisions surrounding goals affect the entire process. Considering climate change–driven constraints when setting goals will improve outcomes. (4) Flawed decision-making is a risk associated with certain organizational contexts and affects the identification of goals, vulnerabilities, and adaptation options. (5) Climate adaptation actions cannot be evaluated in the short term for efficacy because climate change is ongoing. However, the appropriateness of a plan in responding to anticipated change can be evaluated. Study Implications: This work informs strategic planning for climate change adaptation in forests. We created a climate-informed forest management plan using adaptation frameworks for a university-owned forest in Upper Michigan at the confluence of the northern hardwoods and boreal forest ecotypes. We offer assessment of our plan outcomes and insights into how our decision-making context affected them. This case study expands on the ongoing scientific conversation, incorporating concepts from management science, on how best to adapt natural systems to climate change to protect human values derived from ecosystem services.

Climate change policy instruments in agriculture sector: From policy to adaptation practice at local level in Nepal

The current study explores synergies between climate change policy instruments and agriculture sector, reviews identified gaps and understands the translation of policy instruments at local level in five sample municipalities of three ecological regions. Understanding the adaptation actions and knowledge on implementation practices at household level is as the objective of this study. It adopted qualitative research approach using both primary (KII, FGD and household survey) and secondary data (review of existing policy documents) based on qualitative document analysis, (QDA). The study found that, policy and programs formulation at national and sub-national level in different period, are designed within the same setting from national to local level but there is divergence in programs formulation and implementation methods. Capacity and understanding of policy instruments has resulted different policy output which implicate farmers’ response to implementation practices. It is found that municipal authorities are implementing climate friendly agriculture programs without explicitly declaring climate action. The farmers are practicing autonomous adaption in agriculture with limited understanding and technical knowledge of long term climate change effect on farming. This has resulted maladaptive practices, which has contested planned climate change adaptation plan and programs. It devaluates the effort and resources spent by national and international institutions on CC policy instrument formulation and implementation. The need of field based demonstrative understanding and awareness campaigns for smallholder farmers is anticipated. It concludes that, flexibility of policy instruments through regular improvements and modification aids context-specific localization provide custom solutions. The custom solution match the traditional and existing adaptation practices assuring ownership at ground level.

Microrefugia and microclimate: Unraveling decoupling potential and resistance to heatwaves

Microrefugia, defined as small areas maintaining populations of species outside their range margins during environmental extremes, are increasingly recognized for their role in conserving species in the face of climate change. Understanding their microclimatic dynamics becomes crucial with global warming leading to severe temperature and precipitation changes. This study investigates the phenomenon of short-term climatic decoupling within microrefugia and its implications for plant persistence in the Mediterranean region of southeastern France. We focus on microrefugia's ability to climatically disconnect from macroclimatic trends, examining temperature and Vapor Pressure Deficit (VPD) dynamics in microrefugia, adjacent control plots, and weather stations. Our study encompasses both “normal” conditions and heatwave episodes to explore the role of microrefugia as thermal and moisture insulators during extreme events. Landscape attributes such as relative elevation, solar radiation, distance to streams, and vegetation height are investigated for their contribution to short-term decoupling. Our results demonstrate that microrefugia exhibit notable decoupling from macroclimatic trends. This effect is maintained during heatwaves, underscoring microrefugia's vital role in responding to climatic extremes. Importantly, microrefugia maintain lower VPD levels than their surroundings outside and during heatwaves, potentially mitigating water stress for plants. This study advances our understanding of microclimate dynamics within microrefugia and underscores their ecological importance for plant persistence in a changing climate. As heatwaves become more frequent and severe, our findings provide insights into the role of microrefugia in buffering but also decoupling against extreme climatic events and, more generally, against climate warming. This knowledge emphasizes the need to detect and protect existing microrefugia, as they can be integrated into conservation strategies and climate change adaptation plans.

Disaster risk management, climate change adaptation and the role of spatial and urban planning: evidence from European case studies

AbstractThis paper advances knowledge and understanding of the relationships between risk management, climate change adaptation and spatial planning as good territorial governance practices. The aim is to present evidence on how risks and their management are progressively being integrated into national planning systems in order to reduce territorial vulnerability and costs related to natural events in the European context. This paper is based on the ESPON-TITAN project which focuses mainly on flood events that occurred in Rotterdam, Prague, the Po river basin, Pori, Andalucia, Nouvelle-Aquitaine, Dresden and the Alpine region. The paper reviews the literature and planning instruments applied in the selected case studies, as well as interviews with key stakeholders and decision makers. The results confirm the hypothesis that traditional disaster management is evolving towards Disaster Risk Management, clearly recognizing that Climate Change modifies and increases threats. Data on the consequences of natural disasters support the desirability of a proactive rather than a reactive approach, highlighting the crucial role of planning. The resulting governance is more "functional" than "territorial", leaving room for further advances and innovations such as territorial and multi-risk perspective, partnerships and civil society participation, and soft versus traditional hard or engineering solutions.

Participating under constraints: roles and limitations of rural women’s involvement in climate change adaptation planning and implementation in Ghana*

ABSTRACT Climate change persists despite growing attention from a wide range of disciplines. In its 2018 report, the United Nations’ Intergovernmental Panel on Climate Change (IPCC) called for an urgent global response from all segments of society to counter the impact of climate change. Rural women in developing countries whose livelihoods largely depend on nature are among the most impacted by climate change. Thus, there is no justification for marginalizing rural women or any group in the fight against climate change. But existing literature shows little scientific knowledge on women’s participation in climate change project planning and implementation. This study examined rural women’s involvement and roles in climate change-related projects and the potential barriers therein. The analysis of in-depth interviews with relevant government officials and women from farmers’ and fishers’ groups showed that women are involved in climate change projects. But women’s involvement is inadequate and constrained by multiple, interlinked sociocultural and other structural challenges. Recommendations for advancing participatory development communication practice beyond stakeholder engagement to focus on strategies for navigating the hindrances to women and other target groups’ participation are offered.

Place-Based Adaptation through Network Governance

Following the inception of Climate Change Adaptation (CCA) within the UNFCCC in 1992, national CCA plans began to emerge around 2008. However, identifying successful cases of adaptation remains challenging. This is because CCA policies often stop at planning, with selective reporting of relevant projects. Recognizing that planning is not the same as actual delivery, substantial gaps persist in connecting these plans to concrete actions, hindering successful adaptation. This paper explores this implementation deficit through the examination of three different governance modes (hierarchies, markets, and networks). Drawing on a policy review (desk study), a qualitative online survey, and semi-structured interviews with professionals engaged in local CCA policies, we identified enablers of effective adaptation policy progress by comparing the Edinburgh and Glasgow city regions. Despite their close spatial and relational proximity, these two city regions have distinct administrative geographies, political leadership, and adaptation-related networks, which identify unique local contexts sufficient to drive different CCA progress. We noted more CCA progress when specific resources included coordinators (dedicated staff) and fiscal supplements, along with regional networks connecting local communities and strengthening partnerships while sharing common values such as reputational opportunities in the Glasgow city region. These findings shed light on effective adaptation governance modes that require not only a deep understanding of place-based contexts but also the presence or nurturing of broader and reinforced networks.

Evaluation of atmospheric indicators in the Adriatic coastal areas: a multi-hazards approach for a better awareness of the current and future climate

Increasing climate resilience to global warming is one of the main challenges of the last few decades. Effective local measures have to be adopted to provide concrete solutions to the current and expected impacts of climate change. This is the goal of the AdriaClim Italia-Croatia Interreg Project (https://www.italy-croatia.eu/web/adriaclim), aimed at supporting the development of regional and local climate change adaptation plans for the Adriatic coastal regions. For this purpose, an exhaustive number of atmospheric climate indicators have been identified and evaluated across nine pilot areas to assess the current and expected main climate hazards affecting these regions, considering the worst-case emissions scenario (Representative Concentration Pathway RCP 8.5). The proposed analyses are provided by the results of the regional climate atmospheric model developed within the AdriaClim Project. The selected climate indicators are used to assess the possible evolution of the climate hazard across the pilot areas, covering different hazards, such as thermal discomfort, drought, and hydrological instability. A site-dependent investigation of the atmospheric climate indicators is proposed to emphasize which regions are more affected than others by the investigated climate hazards, thus warranting more attention in defining and proposing new adaptation strategies. The results highlight increasing temperatures (up to +3°C) across the Adriatic coastal regions, with more emphasis on the Northern Adriatic, where the combined effect with the relevant decrease in precipitation (down to −2 mm/day) may lead to severe drought conditions in the coming decades. In contrast, precipitation-related diseases may hit more Central and South Italy than the Northern Adriatic, except for the Emilia-Romagna region, which is found to be highly sensitive to both hazard categories. Finally, it is relevant to emphasize that these analyses have to be carefully considered in supporting adaptation strategies due to the lack of uncertainty estimates representing a fundamental element for decision-makers.

Regional climate change adaptation planning: a case study on single-story wooden-frame residential buildings vulnerable to hurricane winds in selected US coastal locations

The projected increase in sea surface temperature due to climate change is expected to substantially intensify future hurricanes. Wooden light-frame residential buildings are particularly vulnerable to hurricane damage, and their risk is expected to increase due to heightened exposure and intensifying hurricanes. Therefore, adaptation strategies need to be planned to reduce damage to such buildings while considering the impact of climate change on hurricanes. This study investigates the effectiveness of various climate change adaptation strategies for coastal wood-frame single-story residential buildings and demonstrates how these strategies can be planned. The study considers the four Representative Concentration Pathways (RCPs) proposed by the IPCC to investigate the impact of climate change on wind hazard and losses. Additionally, three locations in the coastal United States of varying sizes, exposure, and hurricane hazard levels are considered: Harris County, Texas; Mobile County, Alabama; and Miami-Dade County, Florida. The results show that the increase in wind speeds and losses will be non-linear with time. All considered adaptation strategies decreased losses, with some able to completely counter the increasing losses even under high emission scenarios. Investigating the effectiveness of adaptive measures can guide stakeholders in allocating funds and efforts for hurricane risk management and enhancing community resilience.

Linking climate change adaptation and public health: perspectives of Norwegian policymakers.

To explore the perspectives of selected Norwegian climate and health policymakers working at national and municipality level regarding how health is accounted for in climate change adaptation plans. Semi-structured digital interviews were conducted with representatives from eight municipalities participating in a national network for climate change adaptation, one political unit and five national public administrations working in climate, health, environment, preparedness, and civil protection. Municipalities coordinate the development of climate change adaptation plans with support from key national actors. Although municipalities were experienced in preparing for extreme climate events and securing infrastructure, limited consideration was given to health in the climate change adaptation work. Such integration was hindered by lack of resources and knowledge regarding what to do, and lack of collaboration between municipality sectors. To connect climate change adaptation and health better, the representatives suggested providing evidence-based information regarding health impacts of climate change, developing concrete tools including warning systems, and implementing regional, national, and international projects to map the impact of climate change and raise capacity. The representatives called for more stringent national guidelines for the integration of health in climate change adaptation, and pinpointed that lessons learnt from the COVID-19 pandemic will enable municipalities to be better prepared and more adaptable in the future. Governmental authorities should provide more concrete guidance regarding the integration of health in climate change adaptation plans. Public health authorities have a central role to play in supporting such endeavours.

Historical and projected future runoff over the Mekong River basin

Abstract. The Mekong River (MR) crosses the borders and connects six countries, including China, Myanmar, Laos, Thailand, Cambodia, and Vietnam. It provides critical water resources and supports natural and agricultural ecosystems, socioeconomic development, and the livelihoods of the people living in this region. Understanding changes in the runoff of this important international river under projected climate change is critical for water resource management and climate change adaptation planning. However, research on long-term runoff dynamics for the MR and the underlying drivers of runoff variability remains scarce. Here, we analyse historical runoff variations from 1971 to 2020 based on runoff gauge data collected from eight hydrological stations along the MR. With these runoff data, we then evaluate the runoff simulation performance of five global hydrological models (GHMs) forced by four global climate models (GCMs) under the Inter-Sectoral Impact Model Intercomparison Project (ISIMIP). Furthermore, based on the best simulation combination, we quantify the impact of future climate change on river runoff changes in the MR. The result shows that the annual runoff in the MR has not changed significantly in the past 5 decades, while the establishment of dams and reservoirs in the basin visibly affected the annual runoff distribution. The ensemble-averaged result of the Water Global Assessment and Prognosis version 2 (WaterGAP2; i.e. GHM) forced by four GCMs has the best runoff simulation performance. Under Representative Concentration Pathways (RCPs; i.e. RCP2.6, RCP6.0 and RCP8.5), the runoff of the MR is projected to increase significantly (p<0.05); e.g. 3.81 ± 3.47 m3s-1a-1 (9 ± 8 % increase in 100 years) at the upper reach under RCP2.6 and 16.36 ± 12.44 m3s-1a-1 (13 ± 10 % increase in 100 years) at the lower reach under RCP6.0. In particular, under the RCP6.0 scenario, the increase in annual runoff is most pronounced in the middle and lower reaches, due to increased precipitation and snowmelt. Under the RCP8.5 scenario, the runoff distribution in different seasons varies obviously, increasing the risk of flooding in the wet season and drought in the dry season.

Developing Climate Change Adaptation Plans for the Health Sector at the Subnational Level

Climate change impacts represent threats to the population worldwide, and the health sector which is responsible for taking care of their life and health will also be impacted. While the consequences of these impacts are imminent, little or nothing has been done by the health sector at national and subnational levels worldwide to prepare to respond to them. Therefore, health adaptation planning in regard to climate change is crucial to building climate-resilient health systems. This research aims to propose an approach containing phases and steps for developing a Health Adaptation Plan at a subnational level. The methodology involved the collection and analysis of several guidelines and tools provided by the WHO and other relevant organisations. This is supplemented by analysis of existing Health Adaptation Plans at national and subnational levels developed in different governmental organisations and systems worldwide since 2003. The findings included four phases and twelve steps for developing Health Adaptation Plans at subnational-level organisations in the health sector. The s establishes guidance for subnational organisations within the health sector that are planning to develop a Health Adaptation Plan.

Local Context Capacity Building Needs for Climate Change Adaptation among Smallholder Farmers in Uganda: Policy and Practice Implications

Climate change impacts threaten sustainable development efforts. The magnitude of the impacts, however, varies with the socio-ecological characteristics of locations. This is the reason there is consensus on the necessity for climate change adaptive capacity building that is country driven, and based on, and responsive to, local needs. However, information on context specific capacity building needs in developing countries is not readily available. The objective of this study was to establish location specific awareness, training, educational research and technology capacity building needs for climate change adaptation among smallholder farmers in Uganda. Semi-structured questionnaires were used with 465 households from five agro-ecological zones, selected based on the level of vulnerability of agricultural systems to the main climate variation and change hazards. Results reveal substantial capacity building needs in all the zones. The majority of the farmers needed capacity building for interventions on soil-water conservation practices for adapting to drought and unpredictable rainfall. For all zones, education, research, and technology were perceived as key needs. However, the needs varied among zones. These results demonstrate the importance of context specificity in adaptation efforts. The study provides agro-ecological and social system specific information for climate change adaptation planning and policy interventions for effective capacity building.

A Deeper Monitoring and Evaluation of the Nature of Barriers to Climate Change Adaptation Planning under Fuzzy Multi-Criteria Decision Making Methodology

This study developed a decision-making model to evaluate the barriers to climate change. The climate change barriers have various criteria, such as economic, social, technological, market, environmental, and time frame barriers. These barriers can be evaluated by the multi-criteria decision-making (MCDM) methodology. The MCDM methodology is employed to deal with various criteria and control them. The MCDM methodology is employed in the decision-making model with multiple criteria. The TOPSIS method is an MCDM method used in this paper to rank the alternatives under different criteria. The TOPSIS method is integrated with the spherical fuzzy set (SFS) to overcome the uncertainty in the evaluation process. This study used eight criteria and ten alternatives to be evaluated. The results show the economic criterion has the highest importance and social barriers have the lowest importance. Sensitivity analysis is employed in this study to show the stability of the results. The nine cases of sensitivity analysis are proposed, so the results show the rank is stable.

Let’s Do It for Real: Making the Ecosystem Service Concept Operational in Regional Planning for Climate Change Adaptation

The application of ecosystem service (ES) knowledge to planning processes and decision-making can lead to more effective climate change adaptation. Despite the increased attention given to the ES concept, its degree of integration and use in spatial planning processes are still below the expectations of those who are promoting this concept. Barriers hindering its operationalisation cover a span of aspects ranging from theoretical to procedural and methodological issues. Overall, there is a general lack of guidance on how and at what point ES knowledge should be integrated into planning processes. This study aims to promote the inclusion of ES knowledge into spatial planning practices and decision-making processes to enhance climate change adaptation. A replicable GIS-based methodology is proposed. First, the potential supply of ESs that can support climate change adaptation (ESCCAs) is defined, mapped, and quantified. Then, a need for an ESCCA supply is identified, and territorial capacities to respond to the expected climate change impacts on natural and socio-economic sectors are assessed. The methodology is applied to the Friuli Venezia Giulia Autonomous Region (Italy) as an illustrative case study. The results reveal that areas with similar geomorphological characteristics tend to respond similarly. Forest ecosystems, inland wetlands and specifically salt marshes can potentially supply a greater variety of ESCCAs. In the case study area, about 62% of the supplied ESCCAs can contribute to reducing the impacts in more than 50% of the impacted sectors. The territory of the study site generally shows good preparedness for expected impacts in most of the analysed sectors; less prepared areas are characterised by agricultural ecosystems. This reading approach based on land cover analyses can thus assist in developing policies to enhance different territorial capacities, ultimately leading to better and more sustainable decision-making.

ICT promotes smallholder farmers’ perceived self-efficacy and adaptive action to climate change: Empirical research on China's economically developed rural areas

Understanding the impact of technological advancements, such as ICT, on the climate change adaptation actions of smallholder farmers is crucial for comprehending their adaptive strategies. This study utilizes data from a survey of 2230 smallholder farmer households in the developed rural region of the Yangtze River Delta in China to examine the factors influencing their perceived self-efficacy and actions to adapt to climate change. Using binary logit regression and OLS models, we identify the role that determinants of ICT use play in shaping smallholders' perceived self-efficacy and adaptive action. Our findings corroborate that perceived self-efficacy is a robust, positive predictor of adaptive action. The data indicate that the sole presence of adaptation leaders predominantly enhances perceived self-efficacy. In contrast, adaptive investments at the village level are primarily associated with an increase in adaptive actions. However, peer effects may diminish smallholder perceived self-efficacy and adaptive action. In addition, our study indicates that while ICT has not currently supplanted traditional social networks in influencing smallholder climate change adaptation perceived self-efficacy and adaptive action, we cannot dismiss the potential substitution effect. We also clarify why the peer effects of traditional networks have starkly contrasting impacts in developed and less-developed rural regions in China. Overall, our findings underscore the importance of incorporating objective influencing factors of smallholder adaptation actions and their effects on subjective perceived self-efficacy into future climate change adaptation plans and policies to foster adaptation actions.