Global Environmental Change最新文献

Latin American cities are increasingly impacted by floods and this trend is likely to be further exacerbated under the combined effects of climate change and urbanisation. To reduce urban flood risk, green infrastructure and the ability to preserve and rehabilitate green spaces is often mentioned as an option to improve the hydraulic response of cities. Yet, little empirical evidence exists about the degree to which a greener city land cover can reduce the impacts of extreme rainfall on urban economic activity. Using earth observations from 630 cities across Latin America, this paper shows that extreme rainfall has a negative impact on urban economic activity, as proxied by cities’ night lights. Importantly, it finds that this negative impact diminishes as city’s land cover becomes greener: for cities where dense vegetation represents more than 20 % of total city area, the marginal impact of extreme rainfall is broadly halved vis-a-vis cities below this threshold. A counterfactual analysis for the year 2015 suggests that increasing the greenness of 25 % of the cities in our sample could have reduced losses by US$ 6,500 million -equivalent to a 19 % reduction of total estimated losses. These results evidence the benefits that a greener city land cover that makes room for green infrastructure can provide to adapt to more erratic rainfall patterns.

Byproduct metals are essential to global low carbon transition since they are irreplaceable in modern renewable energy technologies. Gallium (Ga) is classified as one critical byproduct metal due to its extensive use in electronic applications and low carbon technologies, as well as its limited resource endowment. It is urgent to uncover the global and regional Ga stocks and flows so that the potential supply risks can be mitigated. This study maps the global and regional Ga cycles for the period of 2000–2020 by employing a trade-linked multiregional material flow analysis (MFA) method. Our results show that 79% of the global Ga co-mined from bauxite ended up in red mud or entered the aluminum cycle as an impurity, indicating a significant recycling potential. Different involved regions have different but complementary roles in the global Ga supply chain. China dominates the global primary Ga production, accounting for 97% of the global total in 2020. Japan and the United States are key players in high-purity Ga refining and rely on Ga to support their electronic devices manufacturing. Unfortunately, Ga recycling practices are still not occurring due to the low Ga concentrations in major applications. Since the global demand for Ga will continue to grow in the near future, it is urgent to initiate collaborative efforts so that Ga recycling can be enhanced. These efforts are critical to ensure the sustainable Ga supply and facilitate the global transition toward low carbon development.

Current agricultural practices in Europe are increasingly aggravating societal and environmental safety concerns. This creates social and regulatory pressures on farmers, which can lead to declining material and social status of farmers, farmer discontent, and anti-regulation protests. These tensions are rooted in conflicting value systems for agricultural development, which can range from productivist pathways (i.e. valuing production above all else) to increasing multifunctionality pathways (i.e. valuing agriculture for its contribution to multiple economic, environmental and societal needs). It is largely unknown to what degree individual farms and agricultural landscapes are transitioning towards increasing productivism or multifunctionality in practice. Here, we mapped landscape changes and interviewed farmers (n = 274) to examine the diversity of agricultural development pathways in 17 study sites across Europe over the last 20 years (2000–2020). We also assessed the associations between the development pathways and farmers’ perceptions of socio-economic outcomes, namely job satisfaction, societal valuation, and economic performance. Farm-level development was largely aligned with productivist pathways, while landscape-level changes aligned more closely with an increasing multifunctionality pathway. Farmers on pathways of increasing multifunctionality did not perceive improved outcomes on livelihood indicators as compared to productivist farmers. Furthermore, farms on increasing multifunctionality pathways were concentrated in sites with very high management intensities that face strong pressure from environmental regulations, as well as low-intensity, mountainous sites, where opportunities for intensification are limited. These results suggest that current pathways that increase multifunctionality arise mostly by necessity. Successful agricultural transformation will therefore require policy to create enabling environments that provide socioeconomic benefits for farmers to increase multifunctionality, and a civil society and market conditions that value sustainable agriculture.

Research has frequently found that less-educated citizens are more skeptical about climate change and show less trust in climate science than their more-educated counterparts. We advance insights on why this educational divide exists by: 1) scrutinizing the relevance of the dominant knowledge-deficit explanation by uniquely using an objective measure of scientific knowledge; and 2) theorizing and empirically testing a novel explanation on the importance of subjective social status. Building on recent sociological insights, we theorize that less-educated citizens have a lower subjective social status and feel misrecognized by more-educated citizens, inciting frustration and opposition toward the attitudes and lifestyle of the latter. Because belief in and concern about climate change are predominantly embraced by more-educated citizens and have strong status connotations, less-educated citizens’ opposition to the lifestyle of more-educated citizens is likely also directed at the issue of climate change. We test hypotheses derived from both approaches by analyzing unique survey data gathered among members of a high-quality panel representative of the Dutch population. We focus on two outcome measures: climate change skepticism and distrust in climate science. We find that both the knowledge-deficit approach and the novel explanation involving subjective social status contribute to understanding the educational divide in climate change attitudes, in addition to other approaches covered by control variables such as income and political ideology. Our study concludes with a reflection on the theoretical implications of these findings and their practical implications for information campaigns, which our study suggests should be careful not to prime less-educated citizens’ perceived lower social standing.

This study investigates the relationship between a creation-oriented culture and environmental, social, and governance activities in Chinese listed companies between 2008 and 2022. We conduct a textual analysis of firms’ annual reports to quantify the creation-oriented culture and environmental, social, and governance levels. The results reveal that a creation-oriented culture positively affects environmental, social, and governance activities. The findings also show that creation-oriented culture can positively affect environmental, social, and governance activities through the channels of corporate green innovation and chief executive officers’ career horizons. The findings of this study have implications for stakeholders and policymakers aiming to enhance environmental, social, and governance activities at the corporate level.

Participatory Guarantee Systems (PGS) are certification schemes, which offer a guarantee that labelled products comply with a related quality standard. They differ from the prevailing Third-Party Certification (TPC) because in a PGS, food system stakeholders are involved in the decision to award a label. With TPC, a single certification body takes the decision and certification costs may be too high to be borne by smallholder producers. According to PGS guidelines (IFOAM, 2019), shared rights to actively contribute to the inspections, participate in exclusion decisions for certification and to manage the contents of the standard are key features of a PGS. Producers have significantly more rights on the label in a PGS than in TPC. Each PGS has a specific governance structure, which reflects how they have adapted to their respective institutional environments. In this paper, we compare the distribution of power in TPC for the European organic label and four PGS, Nature & Progrès (N&P) in France; Ecovida Agroecology Network (EAN) in Brazil; Certified Naturally Grown (CNG) in the US; and Kilimo Hai (KH) in Tanzania. Drawing on the bundle of rights concept developed by Schlager and Ostrom (1992), we discuss how the common property regimes in PGS have potential for bridging the gap between organic labels and their users. We describe each governance structure, by drawing on data from in-depth interviews with key informants and on the analysis of framework documents and regulatory texts specific to each initiative. We show that the distribution of stakeholders’ rights varies considerably between the different PGS. Similar to the commons, these differences can impact the label’s legitimacy, the PGS members’ involvement and mobilization, and the effectiveness of the rules relating to implementation and compliance.

The global steel sector is responsible for 7% of global greenhouse gas emissions, highlighting the need for significant changes in production practices and the adoption of low-carbon breakthrough technologies to achieve net-zero emissions. This study was conducted to explore positive tipping points at the company level, taking into account socio-political, economic and industry pressures that initiate the tipping process. The study operationalizes tipping points using the Triple Embededdness Framework, which incorporates indicators from the socio-political and economic environment, as well as the industry regime of companies. An analysis is performed of secondary data from four steel companies: BlueScope (Australia), POSCO (South Korea), voestalpine (Austria), and U.S. Steel (USA). The findings indicate that voestalpine is on the verge of reaching a positive tipping point, and POSCO is also on a promising track. In contrast, both BlueScope and U.S. Steel are lagging behind. In the tipping process, national policies play a critical role in expediting the transition to low-carbon steel production for frontrunners, while global climate policy has a greater leverage by influencing producers who operate in a less stringent national policy context. Additionally, the customer demand for low-carbon steel serves as a driving force for innovation and can incentivize steelmakers to produce low-carbon products.

The occurrence of farmer suicides has come to symbolize what is likely widespread and deep, but often hidden, agrarian distress. While this tragic phenomena has attracted tremendous attention in public discourse, its primary drivers remain poorly understood. In particular, climatic stress is often considered to be one such driver, but the mechanisms through which it triggers suicide remain disputed. Here, we provide evidence that factors related to agricultural income mediate the impact of climatic variability on farmer suicides in India. An analysis of temporal variation in suicide occurrence reveals that droughts, which impact farmers’ incomes, increase male farmer suicides by 19%, but have much smaller and insignificant impacts on other occupational or demographic groups. Moreover, whereas suicides by non-farmers are evenly distributed throughout the year, farmer suicides are concentrated during the agricultural season. These results help shed light on the mechanisms driving some of the most extreme and drastic social impacts of climatic variability and change.

Land use is a key driver of the ongoing biodiversity crisis and therefore also a major opportunity for its mitigation. However, appropriately considering the diversity of land-use actors and activities in conservation assessments and planning is challenging. As a result, top-down conservation policy and planning are often criticized for a lack of contextual nuance widely acknowledged to be required for effective and just conservation action. To address these challenges, we have developed a conceptually consistent, scalable land system typology and demonstrated its usefulness for the world's tropical dry woodlands. Our typology identifies key land-use actors and activities that represent typical threats to biodiversity and opportunities for conservation action. We identified land systems in a hierarchical way, with a global level allowing for broad-scale planning and comparative work. Nested within it, a regionalized level provides social-ecological specificity and context. We showcase this regionalization for five hotspots of land-use change and biodiversity loss in dry woodlands in Argentina, Bolivia, Mozambique, India, and Cambodia. Unlike other approaches to present land use, our typology accounts for the complexity of overlapping land uses. This allows, for example, assessment of how conservation measures conflict with other land uses, understanding of the social-ecological co-benefits and trade-offs of area-based conservation, mapping of threats, or targeting area-based and actor-based conservation measures. Moreover, our framework enables cross-regional learning by revealing both commonalities and social-ecological differences, as we demonstrate here for the world's tropical dry woodlands. By bridging the gap between global, top-down, and regional, bottom-up initiatives, our framework enables more contextually appropriate sustainability planning across scales and more targeted and social-ecologically nuanced interventions.

European coal and carbon-intensive regions (CCIRs) face the intricate challenge of navigating destabilization-reconfiguration pathways, requiring a nuanced understanding of how phase-out intertwines with innovation and lock-in mechanisms. The success of this transformation depends on a multitude of factors, including socio-political, economic, and material conditions, as well as psychosocial and cultural dimensions of place. This study examines how feedback loops between structural factors (i.e., socio-political, socio-economic, and infrastructural) and sense of place can either disrupt or reinforce lock-in mechanisms and path dependency in CCIRs. The study focuses on Sulcis CCIR (Sardinia, Italy), where extractive and metal industries are deeply ingrained in the region's culture and economy. To reconstruct the trajectory of the CCIR and gain in depth understanding of feedback mechanisms of path dependency across time, we triangulate different data sources including policy documents, newspapers, participatory workshops, and interviews with key stakeholders. The findings reveal the profound influence of a sense of place grounded in a shared industrial myth along with associated place meanings, identities, and memories on lock-in mechanisms. Positive feedback loops between sense of place and structural factors of lock-in have legitimated the dominance of coal and carbon-intensive industries across time, impeding the recognition of the need for change and obscuring windows of opportunity for low-carbon transformation. Following the definite destabilization of coal, dominant place meanings are being actively challenged, while the legacy of sense of place is serving as a guiding frame for shaping the legitimacy and imaginaries of place transformation and defining a just transition pathway. The study discusses the importance of recognizing and addressing the role of sense of place and its interaction with structural factors in perpetuating lock-in to ensure effective deliberate destabilization efforts and navigate a just reconfiguration of CCIRs.