Department of Geography

In this special issue, we have tried to bridge studies of the Chinese state and of the Chinese city by employing the concepts of space production and territoriality. Three sets of analytical tools frame our questions: First, we use the concept of “urbanization of the local state” instead of “state-led urbanization” to capture the active role of urban processes as a formative force in social transformation and a definitive element in the making of the local state. Urban construction has become the key mechanism of local state building in the areas of public finance, territorial power consolidation, and local leaders’ political performance. Second, we expand the concept of the city to encompass the notion of territoriality, defined as spatial strategies to consolidate power in a given place and time and to secure autonomy. Territorial contestation is unusually intense when the premises of state authority are under-defined and local state jurisdictional boundaries shift frequently, as has been the case in China over the past thirty years. Third, we expand the analysis of territoriality from the realm of the state to that of society with the concept of “civic territoriality.” This concept refers to societal actors’ conscious cultivation and struggle to build territory for self protection and autonomy at the physical, socio-political, and discursive levels. Civic territoriality is central to societal actors’ cultivation of collective identities, to their framing of grievances and demands, and to their options and choice of collective actions. This framework helped to organize the seven contributions of this issue into the following three themes: Territorial Order and State Power, Territorialization of Capital, and Civic Territoriality.   Download PDF for full text of Introduction.

Future climate presents conflicting implications for forest biomass. We evaluate how plant hydraulic traits, elevated CO₂ levels, warming, and changes in precipitation affect forest primary productivity, evapotranspiration, and the risk of hydraulic failure. We used a dynamic vegetation model with plant hydrodynamics (FATES-HYDRO) to simulate the stand-level responses to future climate changes in a wet tropical forest in Barro Colorado Island, Panama. We calibrated the model by selecting plant trait assemblages that performed well against observations. These assemblages were run with temperature and precipitation changes for two greenhouse gas emission scenarios (2086-2100: SSP2-45, SSP5-85) and two CO₂ levels (contemporary, anticipated). The risk of hydraulic failure is projected to increase from a contemporary rate of 5.7% to 10.1-11.3% under future climate scenarios, and, crucially, elevated CO₂ provided only slight amelioration. By contrast, elevated CO₂ mitigated GPP reductions. We attribute a greater variation in hydraulic failure risk to trait assemblages than to either CO₂ or climate. Our results project forests with both faster growth (through productivity increases) and higher mortality rates (through increasing rates of hydraulic failure) in the neo-tropics accompanied by certain trait plant assemblages becoming nonviable.

Methyl bromide (CH3Br) is an important ozone-depleting substance whose use is regulated under the Montreal Protocol. Quantifying emissions on the national scale is required to assess compliance with the Montreal Protocol and thereby ensure the timely recovery of the ozone layer. However, the spatial-temporal patterns of Chinas national CH3Br emissions remain unclear. Here we estimate the national emissions of CH3Br in China during 2011-2020 using atmospheric observations at 10 sites across China combined with an inversion technique (top-down) and compare those with an updated inventory of identified emission sources (bottom-up). Measured CH3Br mole fractions are enhanced well above the background mole fractions, especially at sites in eastern China. Top-down emission estimates exceed bottom-up estimates by 5.5 ± 1.4 gigagrams per year, with the largest fraction (60%) of observationally derived CH3Br emissions arising from underestimated or unidentified emissions sources. This study shows the potential impacts of the unaccounted emissions on stratospheric ozone depletion, with implications for the Montreal Protocol.

Understanding forest water limitation during droughts within a warming climate is essential for accurate predictions of forest-climate interactions. In hyperdiverse ecosystems like the Amazon forest, the mechanisms shaping hysteresis patterns in transpiration relative to environmental factors are not well understood. From this perspective, we investigated these dynamics by conducting in situ leaf-level measurements throughout and after the 2015 El Niño-Southern Oscillation (ENSO) drought. Our findings indicate a substantial increase in the hysteresis area (Harea) among transpiration (E), vapor pressure deficit (VPD), and stomatal conductance (gs) at canopy level during the ENSO peak, attributed to both temporal lag and differences in magnitude between gs and VPD peaks. Specifically, the canopy species Pouteria anomala exhibited an increased Harea, due to earlier maximum gs rates leading to a greater temporal lag with VPD compared to the post-drought period. Additionally, leaf water potential (ΨL) and canopy temperature (Tcanopy) showed larger Harea during the ENSO peak compared to post-drought conditions across all studied species, suggesting that stomatal closure, particularly during the afternoon, acts to minimize water loss and may explain the counterclockwise hysteresis observed between ΨL and Tcanopy. The pronounced Harea during the drought points to a potential imbalance between water supply and demand, underlining the role of stomatal behavior of isohydric species in response to drought.

Care is a practice and form of labour making human survival and flourishing possible. This Symposium explores the place and work of care within housing movements, asking how care operates as a politics, an ethics, and a set of practices through which tenants survive—and ultimately seek to transform—the structural violence of capitalist housing systems. Situated in US cities with abiding associations with Blackness and indigeneity, papers in the Symposium examine housing movements that take care as the starting point. As we discuss in this introduction to the Symposium, in such movements, care operates as connective tissue across households and modes of difference; challenges relations of racial capitalism and settler colonialism that underlie dominant understandings of who deserves and can demand care; and drives calls for public care and experiments with non-propertised forms of ownership. Housing systems are care infrastructures, making housing movements a vital place for care work.

Abstract: The Mundra Port on the Gulf of Kutch in western India is one of India's largest port projects today. This article takes the port-circulated narrative of the coast being a natural harbor as its starting point, to show how fresh water was central to official maritime projects until the early postcolonial period. Conserving mangroves and freshwater creeks was not antithetical to maritime ports but part of the same administrative project. Political and infrastructural shifts from the river to the tide naturalized the erasure of coastal fresh water and transformed the coast into a singularly tidal space, creating the conditions for the development of a large-scale, high-technology shipping port.

Private renting increasingly comprises a complex ecosystem of actors who assemble housing within the market, and collect rental income and data from tenants, and data on the material assets themselves. Our analysis – at the intersection of rentier and platform capitalism – focuses on landed (material real estate) and technological (digital infrastructure and data) property in Australia’s private rental system. Drawing out relationships between the various actors – landlords, rental property managers and real estate agencies, software developers and providers, property developers and investors – and both their properties and their uses of Proptech (property technology), we show how housing and technology are being leveraged for profit in new ways. In Australia, landed property retains its precedence for established (individual and institutional) landlords, whose interest in Proptech relates to enhancing or value-adding to rental housing assets. For Proptech and institutional real estate players seeking to consolidate both landed and technology property, capturing the tech landscape is increasingly important; indeed, securing control and/or consolidation of technology property is a key motivation for building and/or using Proptech among the largest property developers. Our findings show how rent extraction operates across and between different types and scales of property and market actors, and in new ways that differentiate the figure of the rentier while upholding the dynamics of the rentier model.

This rejoinder engages with the commentaries on my article on ‘Digital experiments with landed property’ from Julien Migozzi and Sara Safransky. In my response, I share my reflections on the valuable provocations and interrelated themes offered in these generous commentaries. First, I argue that an especially distinctive aspect of digital experiments with landed property is the volumetric property relations they are generating. Second, I attend to subjectivities cultivated within and against digitised property relations, and how they relate to structures of power. Third, I extend my thinking on the glitchiness and fallibility associated with processes of experimentation.

This theme issue investigates how 21st-century digital innovations are changing the nature and value of land, housing, and property. Contributors bring together an array of cases to understand how digitization is remaking land and housing on a global scale and, in turn, how existing property relations structure digital transformations in particular geographies. In this introduction to the theme issue, we outline how hype can be used as an analytical entry point to characterize the collection’s contribution, demonstrating how hype elides unequal relations of land and labor while stoking speculation in immovable property, even as it creates new markets for less tangible assets—whether rental data or virtual plots—that usher in new global connections and familiar market dynamics.

A wide range of digital innovations has changed property relations globally over the past fifteen years. What are we to make of these digital experiments with landed property? I argue we should not mistake their technological novelty for a break with the geographic and historical specificities of property relations. The yoking of property to modernity and civilization makes technological progress a fundamental part of how relationships to land are constituted and reconstituted, and in whose interests, throughout global capitalism. In this article, I situate 21st century housing market technologies within sedimented relations of landed property in the United States, showing the history of property innovation in the United States is also one of racialized wealth accumulation and dispossession. I interpret current anxieties about ‘robot landlords’ as anxieties about how the shifting landscape of property ownership appears to threaten the economic benefits associated with racial dominance.