This analysis presents a comparison of life-cycle GHG emissions from synthetic paraffinic kerosene (SPK) produced as jet fuel substitute from jatropha curcas feedstock cultivated in Brazil against a reference scenario of conventional jet fuel. Life cycle inventory data are derived from surveys of actual Jatropha growers and processors. Results indicate that a baseline scenario, which assumes a medium yield of 4 tons of dry fruit per hectare under drip irrigation with existing logistical conditions using energy-based coproduct allocation methodology, and assumes a 20-year plantation lifetime with no direct land use change (dLUC), results in the emissions of 40 kg CO₂e per GJ of fuel produced, a 55% reduction relative to conventional jet fuel. However, dLUC based on observations of land-use transitions leads to widely varying changes in carbon stocks ranging from losses in excess of 50 tons of carbon per hectare when Jatropha is planted in native cerrado woodlands to gains of 10-15 tons of carbon per hectare when Jatropha is planted in former agro-pastoral land. Thus, aggregate emissions vary from a low of 13 kg CO₂e per GJ when Jatropha is planted in former agro-pastoral lands, an 85% decrease from the reference scenario, to 141 kg CO₂e per GJ when Jatropha is planted in cerrado woodlands, a 60% increase over the reference scenario. Additional sensitivities are also explored, including changes in yield, exclusion of irrigation, shortened supply chains, and alternative allocation methodologies.

No abstract

No abstract

Through a micro-level study of a biofuel-related land acquisition in rural Tamil Nadu, India, this article reveals how state-subject relations are shaping modern land deal politics. Through its political construction of the concept of 'wasteland' and its associated wasteland development programme, the Indian state has facilitated a series of questionable land acquisitions, reshaping agrarian livelihoods in the process. A class of land brokers has emerged to help carry out the state's project of converting 'wastelands' to more 'productive', state-defined uses such as biofuel cultivation and industrial expansion. Those whose lands have been acquired as part of these programmes have undergone a transition to wage labour, increasing the prolitarianization of agrarian communities. By documenting the mechanics of this 'wasteland governmentality', this study contributes to a political sociology of the state by unpacking the linkages between the state and agrarian subjects in the context of the 'global land grab'. Development and Change 44(2): 409-428.

This paper analyzes why and how wasteland development narratives persist through an evaluation of wasteland development policies in India from 1970-present. Integrating critical scholarship on environmental narratives and enclosures, I find that narratives of wastelands as "empty" spaces available for "improvement" continue because they are metaphors for entrenched struggles between the government's shifting visions of "improvement" and communities whose land use practices contradict these logics. Since the 1970s, "improvement" has meant establishing different types of tree plantations on wastelands to ostensibly provide energy security. These projects have dispossessed land users by enclosing common property lands and providing forms of energy incommensurate with local needs, a trend I term "energy dispossessions." Factors enabling energy dispossessions include the government's increased attempts to establish public-private partnerships to carry out "improvement" and a "field of observation" constructed to obscure local livelihoods. Unveiling these logics will help to problematize and contest future iterations of wasteland development.

The extraction of unconventional oil and gas-from shale rocks, tight sand, and coalbed formations-is shifting the geographies of fossil fuel production, with complex consequences. Following Jackson et al.'s (1) natural science survey of the environmental consequences of hydraulic fracturing, this review examines social science literature on unconventional energy. After an overview of the rise of unconventional energy, the review examines energy economics and geopolitics, community mobilization, and state and private regulatory responses. Unconventional energy requires different frames of analysis than conventional energy because of three characteristics: increased drilling density, low-carbon and "clean" energy narratives of natural gas, and distinct ownership and royalty structures. This review points to the need for an interdisciplinary approach to analyzing the resulting dynamic, multilevel web of relationships that implicate land, water, food, and climate. Furthermore, the review highlights how scholarship on unconventional energy informs the broader energy landscape and contested energy futures. 2.1

No abstract

No abstract