Land Use PolicyPub Date : 2025-03-22DOI: 10.1016/j.landusepol.2025.107542
Chenglong Yin , Ruishan Chen , Xiangming Xiao , Yuanwei Qin , Fei Meng , Yuan Yao , Li Pan , Lilin Zheng
{"title":"Spatio-temporal evolution of vertical urban growth in China’s Yangtze River Delta from 1990 to 2020","authors":"Chenglong Yin , Ruishan Chen , Xiangming Xiao , Yuanwei Qin , Fei Meng , Yuan Yao , Li Pan , Lilin Zheng","doi":"10.1016/j.landusepol.2025.107542","DOIUrl":"10.1016/j.landusepol.2025.107542","url":null,"abstract":"<div><div>Building height changes are an important feature of urbanization. Accurately capturing the spatio-temporal dynamics of building height changes is crucial for characterizing urban expansion patterns. Previous studies of urbanization have mainly focused on horizontal expansion and lacked attention to vertical growth. This study investigated vertical growth in a rapidly urbanizing region, the Yangtze River Delta (YRD) region of China, from 1990 to 2020 to reveal the changing spatio-temporal distribution of building height. We also analyzed how major socio-economic factors and policies influence the increase in the number of new high-rise buildings. The results show that the fastest vertical expansion occurred in Shanghai, southern Jiangsu, northern Zhejiang, and eastern Anhui, revealing an uneven pattern of urban vertical growth across the YRD region and potentially leading to the urban ecological, environmental, and public health concerns in these areas. The number of newly added pixels rose from 1991 to 2015 and reached its maximum from 2011 to 2015 (11,084,153, corresponding to 9975.74 km²). However, it started to fall back from 2016 to 2020 (5,488,574, 4939.72 km²). Most added building heights were 9–24 m, corresponding to 3–8 floors. The YRD had the maximum number of new high-rise building pixels from 2011 to 2015 (475,284, 427.76 km²). The number of new high-rise buildings positively correlates with GDP, population, and the percentage of tertiary industry while negatively correlated with the percentage of secondary industry. In alignment with the United Nations Sustainable Development Goal (SDG) 11’s targets on affordable housing and sustainable urbanization, our analysis of vertical expansion can provide an important perspective for understanding the mechanism of urban vertical growth in urbanization and guide policy interventions to balance economic growth with ecological preservation for rapidly urbanizing regions worldwide.</div></div>","PeriodicalId":17933,"journal":{"name":"Land Use Policy","volume":"153 ","pages":"Article 107542"},"PeriodicalIF":6.0,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Adoption of sustainable land and water management practices and their impact on crop productivity among smallholder farmers in sub-Saharan Africa","authors":"Cool Dady Mangole , Charles Mbogo Maina , Kelvin Mulungu , Maurice Tschopp , Nichole Harari , Roopa Suresh , Menale Kassie","doi":"10.1016/j.landusepol.2025.107533","DOIUrl":"10.1016/j.landusepol.2025.107533","url":null,"abstract":"<div><div>Land degradation and water challenges threaten sub-Saharan Africa's agricultural productivity and food security. This study uses panel secondary data from the World Bank Living Standards Measurement Study—Integrated Surveys on Agriculture project to evaluate land degradation variations, the adoption of sustainable land and water management (SLWM) practices, and their impacts on crop yields among smallholder farmers in four sub-Saharan African countries: Tanzania, Malawi, Uganda, and Ethiopia. The study used a high-dimensional fixed effects model to control for time-invariant unobserved and time-varying observed household and plot-level confounders. The results indicate that while many households experienced land degradation and water problems, SLWM adoption has decreased over the past ten years. The study finds that household socioeconomic characteristics, extension services and social networks, plot-level farm characteristics (i.e., soil types, soil fertility, slope, plot tenure, and farm size), land degradation, and climate-related variables influence smallholder farmers’ adoption of SLWM practices. Further, the adoption of SLWM practices leads to significant increases in crop yields for most practices and countries, particularly when compared to other degraded plots planted with the major crop in each country. These findings highlight the need for targeted interventions to improve farmers’ access to tailored agricultural extension services and establish secure land tenure systems to enhance the adoption of SLWM practices in most countries. Further research is needed to identify effective strategies for promoting the adoption of SLWM practices and understand the challenges to their implementation. Improving systems such as extension, cooperatives, and digital tools to deliver timely and efficient information about SLWM practices and secure land tenure in some contexts can improve the adoption of these practices.</div></div>","PeriodicalId":17933,"journal":{"name":"Land Use Policy","volume":"153 ","pages":"Article 107533"},"PeriodicalIF":6.0,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143677893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Land Use PolicyPub Date : 2025-03-20DOI: 10.1016/j.landusepol.2025.107534
Shahin Bahrami, Mani Rouhi Rad, Rodolfo M. Nayga Jr
{"title":"Land tenure and conservation in agriculture: Evidence from United States farm-level data","authors":"Shahin Bahrami, Mani Rouhi Rad, Rodolfo M. Nayga Jr","doi":"10.1016/j.landusepol.2025.107534","DOIUrl":"10.1016/j.landusepol.2025.107534","url":null,"abstract":"<div><div>The adoption of conservation practices on working farmland has proven effective in mitigating environmental externalities created by agricultural production. The widespread use of these practices, among other factors, depends on the private benefits and costs associated with them, as well as the timing of the outcomes. Around 40 % of all farmland acres in the U.S. are rented by operators who do not own them. In theory, renters facing tenure insecurity, higher discount rates, and shorter planning horizons may be less inclined to adopt conservation. In this paper, we empirically investigate whether the adoption of conservation tillage practices and cover crops differs among producers with different land tenure. Specifically, we use operation-level data from the Census of Agriculture to assess the effect of land tenure and several producer-level characteristics on conservation adoption. We find that owners adopt no-till practices at higher rates relative to renters, but the adoption rates of reduced-tillage and cover crops are, on average, higher among renters compared to owners. We show that these differences are most pronounced among small and medium-sized farms, and the impact of tenure becomes statistically insignificant in larger operations. Additionally, we find evidence that cash rental arrangements may positively influence conservation adoption among renters relative to share lease contracts. Our results have important implications for the design of conservation programs. Our findings do not fully support arguments suggesting that policies increasing the proportion of owner-operated cropland or incentivizing share-rental arrangements might increase the adoption of all conservation practices among producers, or that renters and owners should be treated differently from the policy perspective.</div></div>","PeriodicalId":17933,"journal":{"name":"Land Use Policy","volume":"153 ","pages":"Article 107534"},"PeriodicalIF":6.0,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143677894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Land Use PolicyPub Date : 2025-03-18DOI: 10.1016/j.landusepol.2025.107537
Michael Getzner , Johann Bröthaler, Tatjana Neuhuber, Thomas Dillinger, Elias Grinzinger, Arthur Kanonier
{"title":"Socio-economic, political and fiscal drivers of unsustainable local land use decisions","authors":"Michael Getzner , Johann Bröthaler, Tatjana Neuhuber, Thomas Dillinger, Elias Grinzinger, Arthur Kanonier","doi":"10.1016/j.landusepol.2025.107537","DOIUrl":"10.1016/j.landusepol.2025.107537","url":null,"abstract":"<div><div>For decades, various Austrian spatial planning strategies have emphasized the need to curb land consumption and land sealing. The growth paradigm in concrete land use planning is prevalent to this day: land consumption is still closely coupled to income (GDP) growth, while existing and newly introduced policy instruments were basically ineffective in curbing land consumption. Local decision-makers often expect to improve the fiscal position (municipal budgets) by a growth of residents as well as of businesses, as both increase revenues transferred to municipal budgets within the Austrian fiscal federalism framework (revenue sharing system/Finanzausgleich). This paper investigates the drivers and determinants of unsustainable land use (e.g., increased land take and land sealing for buildings and infrastructure that reduce soil ecosystem services) in Austria, and, in particular, the economic (fiscal) incentives for municipal decision-makers to adhere to the growth paradigm in Austrian spatial development. Based on a conceptual politico-economic model of land use decisions in Austria that takes into account various market and planning failures (e.g., externalities, fiscal illusion, behavioral anomalies, political determinants, moral hazard), the paper assesses the importance of the different drivers of land use decisions. Several key socio-economic and structural variables (e.g., population, income, demography) proved to be significant in explaining the continuous growth trend in land consumption. In addition, there is substantial spatial correlation in municipal land use decisions. The paper draws several conclusions on innovative policy approaches to escape the growth paradigm in spatial planning, in particular, new fiscal instruments to curb unsustainable land use patterns, which target both public (municipal) decisions makers as well as private land owners.</div></div>","PeriodicalId":17933,"journal":{"name":"Land Use Policy","volume":"153 ","pages":"Article 107537"},"PeriodicalIF":6.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Land Use PolicyPub Date : 2025-03-17DOI: 10.1016/j.landusepol.2025.107529
Aohui Wu , Zhitai Wang
{"title":"Multi-scenario simulation and carbon storage assessment of land use in a multi-mountainous city","authors":"Aohui Wu , Zhitai Wang","doi":"10.1016/j.landusepol.2025.107529","DOIUrl":"10.1016/j.landusepol.2025.107529","url":null,"abstract":"<div><div>Scientific prediction and assessment of land use types and their carbon storage potentials in urban areas under various future development scenarios hold significant practical importance for guiding urban territorial spatial planning and landscape regulation. This study, based on three phases of high-precision land use data in the central urban area of Guiyang City, utilizes the PLUS-InVEST model to simulate and evaluate the dynamics of land use and its carbon storage potential in a multi-mountainous city area under three future development scenarios. The results indicate that, between 2008 and 2018, the cultivated land and urban remnant mountainous (URMs) in the Guiyang build-up area decreased by 94.17 km<sup>2</sup> and 13.32 km<sup>2</sup>, respectively. Concurrently, the area of artificial surfaces and green land increased by 77.2 km<sup>2</sup> and 26.4 km<sup>2</sup>, respectively. Under the Ecological Conservation-Prioritized (EC) scenario, Guiyang City's land use pattern emphasizes the protection of natural green spaces and restricts the conversion of artificial surfaces to other land types. This scenario results in the highest carbon storage and sustains positive growth in the economic value of carbon sequestration. Conversely, under the Economic Development-Prioritized (ED) scenario, artificial surfaces continue to expand, leading to the lowest carbon storage and the most severe loss in the economic value of carbon sequestration. Notably, when constrained by red-line protection policies, the total carbon storage exhibits positive changes across all three simulation scenarios. These findings provide valuable reference and basis for future territorial spatial planning and landscape regulation aimed at sustainable development goals in multi-mountainous cities.</div></div>","PeriodicalId":17933,"journal":{"name":"Land Use Policy","volume":"153 ","pages":"Article 107529"},"PeriodicalIF":6.0,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143636517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Land Use PolicyPub Date : 2025-03-11DOI: 10.1016/j.landusepol.2025.107530
Shengnan Jiang , Hang Ren , Zhenke Zhang
{"title":"Monitoring and assessing the growth law of urban land using multi-source data: A case study of five East African countries","authors":"Shengnan Jiang , Hang Ren , Zhenke Zhang","doi":"10.1016/j.landusepol.2025.107530","DOIUrl":"10.1016/j.landusepol.2025.107530","url":null,"abstract":"<div><div>With the rapid growth of the world's urban population, urban land expansion has become an inevitable trend, with Africa being one of the primary locations for both global urban population growth and urban land expansion. Small and medium-sized cities are gradually recognized as playing an important role in the urbanization process in Africa. However, there is relatively little attention has been paid to small and medium-sized cities. This study focused on urban clusters in Kenya, Tanzania, Uganda, Rwanda, and Burundi, five countries in East Africa. Urban land and urban centers of 59 cities were identified using multi-source data. Then, the growth law of cities of different sizes (large, medium, and small) was analyzed through the urban land density function and urban attractiveness index. Results indicate that large cities are more developed, with obvious core areas and high attractiveness, which may lead to further excessive urbanization and pose challenges to urban sustainable development. Small cities are still in the early stages of urban development and are experiencing rapid and disorderly expansion. By reviewing the history of urban development and policy implementation, we believe that promoting the development of small and medium-sized cities is a significant measure to slow down the excessive urbanization of large cities. Increasing employment opportunities and infrastructure is an effective way to enhance the attractiveness of small and medium-sized cities and promote their development. At the same time, it is necessary to carry out urban plans for small and medium-sized cities to avoid phenomena such as informal settlements that affect the sustainable development of large cities.</div></div>","PeriodicalId":17933,"journal":{"name":"Land Use Policy","volume":"153 ","pages":"Article 107530"},"PeriodicalIF":6.0,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143591399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Land Use PolicyPub Date : 2025-03-11DOI: 10.1016/j.landusepol.2025.107524
Ismaila Rimi Abubakar , Victor U. Onyebueke , Taibat Lawanson , Aliyu Salisu Barau , Yakubu Aliyu Bununu
{"title":"Urban planning strategies for addressing climate change in Lagos megacity, Nigeria","authors":"Ismaila Rimi Abubakar , Victor U. Onyebueke , Taibat Lawanson , Aliyu Salisu Barau , Yakubu Aliyu Bununu","doi":"10.1016/j.landusepol.2025.107524","DOIUrl":"10.1016/j.landusepol.2025.107524","url":null,"abstract":"<div><div>There is a growing recognition that cities are both vulnerable and significant contributors to climate change (CC). In the last two decades, the Global South nations have surpassed developed countries in energy-related carbon emissions, highlighting the need for greater mitigation responsibilities. Despite the increasing appreciation of the crucial role of urban planning in tackling the root causes and impacts of CC, insufficient attention is given to city-level adaptation and mitigation efforts, particularly in countries heavily dependent on fossil fuels for transportation and energy production. This study utilizes desk research, which is based on the analysis of existing literature and secondary data to investigate the extent to which Lagos megacity implements the UN-Habitat's recommended urban planning responses to CC at the urban level that are related to five key sectors: buildings, infrastructure, transportation, urban form, and urban greening and their potential in fostering urban sustainability. The findings reveal that Lagos is home to 73.4 % of Nigeria’s green building floor areas, generates five megawatts of renewable energy, implements several urban renewal and greening schemes, partners with 434 private companies in garbage collection and recycling, and establishes wastewater treatment and recycling systems. Additionally, its public transportation policy focusing on light rail and bus rapid transit has significant implications for mitigating greenhouse gas emissions. Integrating mitigation and adaptation efforts into urban planning and governance while collaborating closely with local stakeholders and public involvement are crucial for creating sustainable and climate-resilient cities. These lessons are valuable for Global South cities.</div></div>","PeriodicalId":17933,"journal":{"name":"Land Use Policy","volume":"153 ","pages":"Article 107524"},"PeriodicalIF":6.0,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143591400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Land Use PolicyPub Date : 2025-03-10DOI: 10.1016/j.landusepol.2025.107527
Jüri Lillemets , Ants-Hannes Viira , Imre Fertő
{"title":"The intertwined geographies of agricultural land and human settlement in Europe","authors":"Jüri Lillemets , Ants-Hannes Viira , Imre Fertő","doi":"10.1016/j.landusepol.2025.107527","DOIUrl":"10.1016/j.landusepol.2025.107527","url":null,"abstract":"<div><div>Attention of rural policies in Europe is increasingly shifting away from agricultural production towards economic multifunctionality, environmental sustainability, and social development, including the impact of farmland on quality of life. This study examines the relationship between population and agricultural land use in Europe, estimating the proportion of people living at various distances from different types of agricultural land cover across countries and regions in 2006, 2012 and 2018. Our findings reveal that the nearly all of Europeans reside within 10 kilometers of farmland, with vast majority living within 1 kilometer. Overall, the changes during the observed period were neglible. However, there are substantial differences among regions. A more detailed analysis of various agricultural land classes highlights regional disparities that are partly influenced by geological and climatic conditions. Notably, only about half of the variation in the proportion of people living near farmland can be explained by the extent of agricultural land cover, indicating a need for further research. In terms of spatial patterns, Europe can be divided into up to seven distinct groups based on the types of farmland surrounding population.</div></div>","PeriodicalId":17933,"journal":{"name":"Land Use Policy","volume":"153 ","pages":"Article 107527"},"PeriodicalIF":6.0,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143591398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An analysis of default rates and their causes in Brazil’s land credit program","authors":"Rosilene Schardosim Roos, Mauro Delgrossi, Armando Fornazier","doi":"10.1016/j.landusepol.2025.107514","DOIUrl":"10.1016/j.landusepol.2025.107514","url":null,"abstract":"<div><div>The National Land Credit Program in Brazil has succeeded in providing land access to over 68,000 rural workers in just over 20 years. However, the program faces the challenge of defaulting on part of the contracts. Quantifying default on land credit is important to understand the reasons for it and propose improvements. This study sought to quantify the default rate and explore its causes. To do so, public databases on the status of contracted operations were analyzed, followed by interviews with agents directly involved with the beneficiaries, using the Iramuteq software. The results obtained demonstrate that 37 % of its active beneficiaries are lagging on payments, both with financial agents and those listed in active debt with the Federal Government. According to the perceptions of the interviewed actors, the causes are varied, with particular emphasis on the maximum financing limit, which is considered insufficient for purchasing suitable property in some regions, and successive renegotiations, which end up discouraging others from fulfilling their payments as agreed by granting significant discounts for settlement. Furthermore, there is a perception that post-contracting is crucial for the success of the program, especially with the provision of technical assistance and the supply of resources for productive investments. As recommendations and lessons learned, the research shows that land credit must be worked on in conjunction with other public policies such as encouraging production through other lines of rural credit, technical assistance, infrastructure conditions, among others.</div></div>","PeriodicalId":17933,"journal":{"name":"Land Use Policy","volume":"153 ","pages":"Article 107514"},"PeriodicalIF":6.0,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143579457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Land Use PolicyPub Date : 2025-03-06DOI: 10.1016/j.landusepol.2025.107526
Hanabeth Luke
{"title":"Designing social surveys for understanding farming and natural resource management: A purposeful review of best-practice survey methods","authors":"Hanabeth Luke","doi":"10.1016/j.landusepol.2025.107526","DOIUrl":"10.1016/j.landusepol.2025.107526","url":null,"abstract":"<div><div>Social survey research is often used to achieve an improved understanding of land and natural resource management. The question for many land agencies and organisations working to support farmers and other rural landholders is how to gain this information in a scientifically rigorous and cost-effective way. This paper summarises findings from a purposeful review of survey methods applied for understanding rural landholders, including how land and natural resource management may be changing around the globe. Social surveys play a crucial role in understanding the complexities of land management, with survey methods evolving over time as they adapt to technological advancements and shifting research paradigms. Key findings of this review underscore the significance of pre-testing, drawing on diverse sampling techniques, and tailored survey methods to uphold data integrity and enhance response rates. Effective survey design, coupled with integration of conceptual models and identity constructs, can enrich insights into land management practices. Embracing mixed methods and leveraging AI for data integration offer promising avenues for future research, albeit with ethical considerations and challenges in data integration. Previous reviews are extended to describe four main eras in social survey research for natural resource management, being: 1) the Invention Era (1930–1960); 2) the Expansion Era (1960–1990); 3) the Integration Era ('Designed Data' + 'Organic Data') (1990s to 2022); and 4) the Brave New Era (2022 to present). Prioritising longitudinal studies and expanding survey research globally can inform evidence-based policymaking, addressing critical gaps in knowledge as land and natural resource management continues to evolve and respond to changes and challenges worldwide.</div></div>","PeriodicalId":17933,"journal":{"name":"Land Use Policy","volume":"153 ","pages":"Article 107526"},"PeriodicalIF":6.0,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143551831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}