‘We Live Like This’: Local Inequalities and Disproportionate Risk in the Context of Extractive Development and Climate Change on New Hanover Island,Papua New Guinea

This study examines the local processes, effects, and responses to large‐scale logging and agricultural development efforts in subsistence communities on New Hanover Island, Papua New Guinea (PNG). Recently, New Hanover became the site of three special agricultural and business leases (SABLs) that combined to cover approximately 79% of the island. The proliferation of SABLs within PNG is an outcome of recent national development initiatives promoting a significant increase in the production of commercial agricultural crops such as oil palm and biofuel. Accordingly, SABLs are designed to facilitate the development of long‐term commercial agricultural industries in rural locations across the country through the conversion of forested lands and the simplification of communal land tenure, for the purposes of private lease. However, SABLs have simultaneously provided a convenient loophole around more restrictive national forestry policies and thereby become attractive to traditional logging interests in the Asian/Pacific region. Consequently, many SABLs across PNG have failed to produce viable agricultural development or broad local benefit. It is within this context, that this study pays particular attention to the experiences of women and lower‐status landowners living through the processes of SABL conversion, during the El Nino drought of 2015. The study details the statuses and roles of these groups within the overall development process, the ways in which their social relationships changed in the context of development, why these groups were particularly vulnerable to the broad livelihood effects of forest conversion and drought, how they adapted to these effects, and what their hopes were regarding the future of the development project and life on the island. This study adds to current theoretical interests on emerging neoliberal frontiers of land and resource control by examining these SABL landscapes on New Hanover as contemporary examples of land grabs and documenting the very real local level consequences of this phenomenon. The study is also particularly significant in light of the growing threats to forests and forest‐dependent livelihoods and the recognition of the importance of local forest practices to global sustainability.     

农用地集约利用与农产品消费市场可达性关系研究——以江苏兴化市为例

基于农用地集约利用和市场可达性评价方法,计算了兴化市各乡镇农用地集约利用程度和农产品消费市场可达性并通过统计方法初步分析了两者的关系。结果表明:(1)农用地集约利用程度与农产品消费市场可达性具有明显的空间差异;(2)农用地集约利用程度与农产品消费市场可达性之间的秩相关系数为0.23,在α=0.05的置信水平上相关关系不显著,这说明县域尺度下农业用地集约利用与农产品消费市场可达性之间的空间模式已经突破了传统的"农产品消费市场可达性-农业生产方式-农用地集约利用程度"农业区位论模式。     

Emprise et déprise de l'agriculture sur le territoire de l'est de l'Ontario de 1826 à 2006: la dimension environnementale

Agricultural land‐cover changes in Eastern Ontario from 1826 to 2006: environmental effects. Stormont, Dundas and Glengarry (SDG) counties, Eastern Ontario, are among the first areas in Ontario to welcome settlers. In 1784, they established themselves in a forested land where wetlands are very important. Today, a large part of the wetlands has disappeared, but the landscape is wooded, masking the radical changes that took place over the course of the last two centuries. Analysis of census data from 1826 to 2006 allows the reconstruction of the history of land‐cover changes. It reveals the nature and rates of change for which a first analysis is presented. Four periods are identified. First, agriculture conquers the land and establishes its dominance. A plateau is reached in 1891 as agriculture maintains its supremacy until 1941. Then, as fast as agriculture invaded land, it fades away until 1986 when agricultural land‐cover stops shrinking. The opening of forest for cultivation was relatively slow in SDG because of biophysical and socio‐economical conditions associated with an absence of growth of agricultural population. Deforestation and wetland drainage led to a degradation of agricultural life but resulted in consideration of the environment in agriculture. Today, wooded and agricultural land covers are more balanced and environmental effects less acute.     

ART‐P‐MAP Neural Networks Modeling of Land‐Use Change: Accounting for Spatial Heterogeneity and Uncertainty

Spatial land‐use models over large geographic areas and at fine spatial resolutions face the challenges of spatial heterogeneity, model predictability, data quality, and of the ensuing uncertainty. We propose an improved neural network model, ART‐Probability‐Map (ART‐P‐MAP), tailored to address these issues in the context of spatial modeling of land‐use change. First, it adaptively forms its own network structure to account for spatial heterogeneity. Second, it explicitly infers posterior probabilities of land conversion that facilitates the quantification of prediction uncertainty. Extensive calibration under various test settings is conducted on the proposed model to optimize its utility in seeking useful information within a spatially heterogeneous environment. The calibration strategy involves building a bagging ensemble for training and stratified sampling with varying category proportions for experimentation. Through a temporal validation approach, we examine models’ performance within a systematic assessment framework consisting of global metrics and cell‐level uncertainty measurement. Compared with two baselines, ART‐P‐MAP achieves consistently good and stable performance across experiments and exhibits superior capability to handle the spatial heterogeneity and uncertainty involved in the land‐use change problem. Finally, we conclude that, as a general probabilistic regression model, ART‐P‐MAP is applicable to a broad range of land‐use change modeling approaches, which deserves future research.     

Territory—A Natural Resource of Georgia and Problems of its use for Settlement

The problem of the conversion of land use from farming to settlement or construction presents a particularly issue in mountainous regions like Georgia where usable land resources are scarce. Whenever possible, valuable agricultural land should not be removed from cropping and be used for expansion of the settled area. If such conversion is unavoidable, the land should be carefully evaluated and compensation paid to the agricultural establishment concerned. In general, unused land should be chosen for construction, even if additional outlays are needed for improvement. A formula is proposed for comparing the additional outlays needed to improve poor land with the loss in net income that would be suffered by the conversion of farm land to construction.     

A NEW SPATIAL MULTIPLE DISCRETE‐CONTINUOUS MODELING APPROACH TO LAND USE CHANGE ANALYSIS

This paper formulates a multiple discrete‐continuous probit (MDCP) land use model within a spatially explicit economic structural framework for land use change decisions. The spatial MDCP model is capable of predicting both the type and intensity of urban development patterns over large geographic areas, while also explicitly acknowledging geographic proximity‐based spatial dependencies in these patterns. At a methodological level, the paper focuses on specifying and estimating a spatial MDCP model that allows the dependent variable to exist in multiple discrete states with an intensity associated with each discrete state. The formulation also accommodates spatial dependencies, as well as spatial heterogeneity and heteroskedasticity, in the dependent variable, and should be applicable in a wide variety of fields where social and spatial dependencies between decision agents (or observation units) lead to spillover effects in multiple discrete‐continuous choices (or states). A simulation exercise is undertaken to evaluate the ability of the proposed maximum approximate composite marginal likelihood (MACML) approach to recover parameters from a cross‐sectional spatial MDCP model. The results show that the MACML approach does well in recovering parameters. An empirical demonstration of the approach is undertaken using the city of Austin parcel level land use data.     

Environmental Externalities,Median Voters,and the Multicentric City*

Abstract. This paper presents a new theory of the formation of a multicentric city and shows an example where median voters prevail in the social choice of land use patterns. To be specific, environmental externalities of work zones give an incentive to voters to form multiple subcenters in a city even in the absence of agglomeration economies. In addition, the land use pattern chosen closely follows the median voter's preferences under appropriately structured choice process. In this demonstration, zoning is as much the mechanism by which the internal structure of a city is organized as it is the one used to organize the metropolitan fabric of local governments in the Tiebout‐Oates‐Hamilton system.     

Carbon Sequestration in Community Forests: Trade‐offs,Multiple Outcomes and Institutional Diversity in the Bolivian Amazon

Carbon sequestration in community forests presents a major challenge for the Reducing Emissions from Deforestation and Forest Degradation (REDD+) programme. This article uses a comparative analysis of the agricultural and forestry practices of indigenous peoples and settlers in the Bolivian Amazon to show how community‐level institutions regulate the trade‐offs between community livelihoods, forest species diversity, and carbon sequestration. The authors argue that REDD+ implementation in such areas runs the risk of: 1) reinforcing economic inequalities based on previous and potential land use impacts on ecosystems (baseline), depending on the socio‐cultural groups targeted; 2) increasing pressure on land used for food production, possibly reducing food security and redirecting labour towards scarce off‐farm income opportunities; 3) increasing dependence on external funding and carbon market fluctuations instead of local production strategies; and 4) further incentivising the privatization and commodification of land to avoid transaction costs associated with collective property rights. The article also advises against taking a strictly economic, market‐based approach to carbon sequestration, arguing that such an approach could endanger fragile socio‐ecological systems. REDD+ schemes should directly support existing efforts towards forest sustainability rather than simply compensating local land users for avoiding deforestation and forest degradation.     

No Change for Thirty Years: The Renewed Question of Women's Land Rights in Rural China

Since the mid‐1990s, a new land‐use rights regime has gradually come into effect in China. It follows upon a series of earlier changes — land reform, collectivization and the first wave of contracting land to households — that paid attention to women's role in publicly recognized work and provided access to land. The new regime, which has gradually come into effect as previous (usually fifteen‐year) terms expired, authorizes an adjustment in land allocation which is then normally frozen for thirty years. An apparently inadvertent effect of this policy is not only the exclusion of young people from direct access to land for up to thirty years from birth, but the de facto separation of the majority of women who marry or remarry patrilocally from allocated land. ‘No change for thirty years’ (sanshi nian bu bian) has thus become the distinctive feature for women of China's current land‐use regime. The state has renounced its potential to reallocate land periodically and there is no indication that market mechanisms are filling, or are capable of filling, the void thereby created. This article examines local conceptions, responses and practices regarding land‐use rights and their transfer within this new framework, using field evidence from three upland agricultural communities in Chongqing and Sichuan (studied in 2003, 2004 and 2005), where land allocations were fixed in 1995, 1999 and 2001 respectively. The ethnographic findings are further explored in relation to contemporary research on gender and land rights.     

THE EFFECT OF LAND‐USE CONTROLS ON THE SPATIAL SIZE OF U.S. URBANIZED AREAS*

ABSTRACT On a sample of U.S. urbanized areas in 2000, we test theoretical hypotheses of the effect of land‐use controls on the spatial size of urban areas. We find that minimum lot‐size zoning and maximum FAR restrictions expand the urban area, while maximum lot‐size zoning, urban growth boundaries, minimum square footage limits, maximum building permit restrictions, minimum person per room controls, and impact fees contract the urban area. All of these findings are consistent with theoretical predictions although the effect of urban growth boundaries and minimum square footage limits are not statistically significant.     

An alternative approach to zoning in France: Typology,historical character and development control

The paper describes an approach to development control taken in France, bringing together the zoning system of planning and geographical and architectural studies of urban form. The approach addresses a number of issues, in particular the maintenance of the historical and regional character of towns, often eroded under systems of land‐use zoning. The principles and methods of the approach are set out and its application is illustrated by an example, illuminating both the approach and the context in which it was realized.     

Generating Alternative Land‐use Allocation for Mixed Use Areas: Multi‐Objective Optimization Approach

Current research is carried out with an intention to present an optimization approach for the urban land‐use allocation problem by generating Pareto optimum solutions considering two objectives—maximizing compatibility among adjacent space uses of a study area without compromising the area’s total land price and maximizing the price of plot of each individual owner. Considering the non‐linear characteristics of the objective functions, a multi‐objective evolutionary algorithm approach called Non‐Dominated Sorting Genetic Algorithm‐II (NSGA‐II) is applied to obtain Pareto optimal land‐use allocation subject to different set of constraints. The objective functions are tested over a case study area of Dhaka, Bangladesh. The resulting NSGA‐II model produces 24 Pareto optimal solutions of land‐use allocation, allowing tradeoff between maximizing compatibility and land price from one solution to other. This research also expresses the potential of the model to aid the policymakers and city planners of development authorities by providing alternative land‐use plans, and thereby predicting the consequences of any plan before practical application.     

Agricultural Adaptation to Real Regulation on the Urban Fringe: The Chicken Meat Industry's Response to Land‐use Conflict in the Western Port Region of Victoria,Australia

Research theorising the rural‐urban fringe has not focussed in detail on the regulatory system managing land‐use conflict, including disputes arising between agricultural enterprises and residential property owners. To explore local forms of regulation the need to identify relevant actors, their interrelationships and the way that they compete to influence decision‐makers is widely recognised in the literature. Moran et al.'s (1996) conceptualisation of ‘real regulation’, with its emphasis on lobbying by social actors and the (re)formulation of legislation, is identified as a theoretical perspective that can help to explain local forms of regulation. The understanding of patterns of regulation on the urban fringe requires a more detailed conceptualisation of non‐legislative forms of policy, and a greater appreciation of the different strategies adopted by farmers to influence government. This paper investigates how urban fringe agricultural industries have attempted to influence decision‐making within the development approval process. Evidence is presented from the Western Port region in the urban fringe of Melbourne, Victoria, where refusal for the construction of broiler sheds by the Administrative Appeals Tribunal has resulted in the chicken meat industry adopting a more scientific siting strategy. It is concluded that, whilst this provides an example of agricultural adaptation and reinforces the importance of adopting a temporal dimension to investigate the land development process, the possibility that government will assess environmental harm differently in the future leaves urban fringe broiler farming in a precarious position.     

山西省农业土地资源可持续利用研究

农业土地资源的可持续利用是实现农业可持续发展的基础和保证。本文通过分析山西农业土地资源的特点,开发利用现状及存在的主要问题,提出了山西农业土地资源可持续利用的主要措施:加快退耕还林步伐,调整农业用地结构,优化农业生态环境;加强生态农业建设,合理利用土地资源,提高土地生产率;加大农业生态环境整治力度,防止土地退化,减轻自然灾害;强化土地管理,规范土地市场,保护农业土地资源。     

From Incremental Dispossession to a Cumulative Land Grab: Understanding Territorial Transformation in India's North Karanpura Coalfield

This article explores a great contradiction in rural land debates in India: on the one hand, explosive political contestation that is often able to halt proposed land acquisition; on the other, an unprecedented urban‐industrial expansion that is appropriating rural land. The authors argue that land grabbing for mining proceeds in an incremental manner, yet its cumulative effect leads to territorial transformation. To investigate this incremental appropriation, a temporal study of the North Karanpura coal mining tract in eastern India was conducted, combining remote sensing, interviews and official land‐use data. The results reveal a cumulative land grab of thousands of hectares from the late 1980s to the present day as open‐cut coal mines swallow up vast swathes of agricultural fields and forests. The political economy mechanism behind this immense land grab, which to date has gone undetected, consists of three phases: the reservation of the land as a coalfield with multiple coal blocks; the division of the blocks into separate mines; and the flexible expansion of individual mines wherever reduced resistance to land acquisition is encountered. This research indicates that an aggregate analysis of land dynamics can more robustly place the dramatic rearrangements of the Indian countryside within the international land grabbing debate.     

Policy Instrument Choices for Growth Management and Land Use Regulation

What factors account for local government land use practices and their choices among specific growth management policy instruments? We apply the political market framework to examine how land use policy choices in Florida are shaped by institutional features of county governments and the demands of organizations and interests in a community. Local policy decisions reflect a balance of the conflicting interests and responses to economic and political pressures. The results demonstrate that county government structure and election rules play critical roles in the adoption of urban service boundaries, incentive zoning, and transfer of development rights programs. We report evidence consistent with the argument that these “second‐generation” growth management policies are motivated by exclusionary goals.     

石河子市土地利用变化及主要地类驱动力研究

通过分析石河子市土地利用的变化,探讨了其土地利用总体变化和各主要地类的驱动机制。社会经济因素是该区域土地利用总体变化的主导性驱动因素。而人口和经济增长是石河子市土地利用总体变化的首要社会经济类驱动因子,其次农业是技术发展。农业结构调整、产业结构转移是耕地利用变化的主导性驱动因素,而城镇化和工业化发展则是引起建设用地变化的主导性驱动因素。     

RESEARCH IN PROGRESS IN SCANDINAVIA

The authors quantitatively analyze the effect of railroad construction on agricultural land values in the often overlooked, agriculturally oriented, trans-Mississippi West. This region is unique in American history in that, at the end of the nineteenth century, the railroad itself preceded widespread settlement. Using a hedonic model, they show that railroad transport increased agricultural land values in this region by more than 20 percent, which had a larger impact than recent studies have found for other regions. Moreover, the authors found that the addition of a railroad to a county significantly increased its growth in land values. This finding is contrary to that of existing studies. Finally, the authors show statistically that the railroad and land values were not endogenously determined, lending credibility to the causality of the results presented in their hedonic and growth models. These results indicate a valuable alternative approach to use in the historical analysis of transportation infrastructure and its impact on land prices.     

Climate Aridity and Land Use Changes: A Regional‐Scale Analysis

In recent years, aridity and drought have become crucial issues at the global scale because of their environmental and socio‐economic implications. On the one hand, aridity causes a reduction in the biological and economic productivity of terrestrial ecosystems, and represents a serious threat to ecological, biogeochemical, and hydrological processes. On the other hand, human use (and abuse) of vulnerable dry land ecosystems may lead to unsustainable land management. Based on these considerations, this paper analyses the recent land cover changes observed in Latium (Italy) during the exceptionally dry period 2000–2007. More than 50% of the area investigated was classified as dry in 2004–2007 compared with 0% in 2000–2003. Moreover, climatic aridity impacted differently on semi‐natural, agricultural, and built‐up land. These findings illustrate a possible scenario for suburban Mediterranean regions: increasing aridity (mainly due to rising temperatures) mainly impacting on peri‐urban land.