Integrating strict protection and sustainable use areas to preserve the Brazilian Pampa biome through conservation planning

Biodiversity conservation planning must be ecosystem-specific and take into account human needs as food production. The Pampa biome is a temperate grassland with high species richness and with an important role in food production in South America. Here we present the first formal Systematic Conservation Planning for the Brazilian part of the Pampa, which is the least protected biome in Brazil. We aimed to build conservation scenarios where at least 17 % of the biome area were protected, following the 11^th Aichi target for terrestrial lands protection according to the Convention on Biological Diversity. Our conservation targets were the vegetation types of this biome. Three scenarios were built varying in their proportions of strict protection (SP) and sustainable use areas (SU): Permissive scenario (5 % SP, 12 % SU); Intermediate scenario (10 % SP, 7 % SU) and Restrictive scenario (15 % SP, 2 % SU). Urban and rural areas, as well as bovine and ovine density, were used as prioritization costs, aiming to minimize possible conservation conflicts. Four main clusters of priority areas to protect the vegetational diversity can be observed in all scenarios and should be considered when implementing future protected areas in this threatened biome. Sustainable use areas are suitable for low-density livestock raising, combining biodiversity protection and food production, but strictly protected areas are still important to species most affected by livestock. The combination of strict protection and sustainable use areas can be effective in similar biomes. It should be considered in future international negotiations, such as the 2020 Conference to be held in Beijing, opening new strategies to achieve the 17 % of land protection. We expect that this Systematic Conservation Planning reinforces the recently started scientific discussion regarding the conservation of non-forest ecosystems in Brazil.     

Modeling Recreation Site Choice: Do Hypothetical Choices Reflect Actual Behavior?

We examine the ability of revealed preference (RP), site-specific stated preference (SP), transferred SP, and joint RP–SP models to predict aggregate and individual recreation site choice in a holdout sample. For two statistical comparisons, the RP model provided the most accurate predictions of individual choices. However, the transferred SP model, applied directly or estimated jointly with the RP data, performed best in three aggregate and one individual prediction test. These findings suggest that data from well-designed and conducted SP surveys from one site can be combined with site-specific RP data from another site to generate improved models of recreation site choice.     

Incentivizing sustainable rangeland practices and policies in Colombia’s Orinoco region

Livestock grazing, along with agriculture, are key drivers of deforestation and land degradation that subsequently affect ecosystem service provision in the tropics. Although environmental and agricultural policies may curtail these negative effects, information is needed on how specific programs and instruments could be used to incentivize ranchers into adopting rangeland practices to achieve land conservation. We examine what encourages livestock ranchers to adopt more sustainable rangeland practices with various technical and conservation attributes in Colombia’s Orinoco region. First, we analyze a management alternative based on an improved pasture (IP) approach traditionally used in tropical South America, and another practice that promotes silvopastoral systems (SP) that better sustain the long term provision of ecosystem services. Second, we assess the influence that technical assistance and conservation payment instruments can have on the adoption of the IP or SP programs. Using expert-based elicitation, questionnaires, choice experiments, and econometrics, we found that when either SP or IP management alternatives include a complete technical assistance program (CTAP), emphasizing forage or cattle production, the propensity to adopt the conservation focused SP alternative significantly increases. The SP alternative with CTAP for cattle production was valued by ranchers at $290 ha/year and the CTAP prioritizing forage production was valued at $233 per ha/year. Nonetheless, a basic technical assistance program for cattle production using the IP alternative was valued at $128, but when including the CTAP, the value increased to $262. Adopting conservation practices in the form of compensation payments for not grazing portions of their land in the SP was valued by ranchers at an average of $8 and $10 in the IP. Our findings show that decisions to adopt conservation oriented rangeland practices and policies are not strictly based on monetary payments for ecosystem services alone, but also on technical support.     

20 years of stated preference valuation of non-timber benefits from Fennoscandian forests: A meta-analysis

Stated preference (SP) surveys have been conducted to value non-timber benefits (NTBs) from forests in Norway, Sweden and Finland for about 20 years. The paper first reviews the literature and summarises methodological traditions in SP research in the three countries. Second, a meta-regression analysis is conducted explaining systematic variation in Willingness-to-Pay (WTP). Two important conclusions emerge, with relevance for future research: (1) WTP is found to be insensitive to the size of the forest, casting doubt on the use of simplified WTP/area measures for complex environmental goods; and (2) WTP tends to be higher if people are asked as individuals rather than on behalf of their household.     

Improving the Quality of CAP Strategic Planning through Enhancing the Role of Agricultural Economics

Extending strategic planning to the full range of Common Agricultural Policy (CAP) interventions could improve the impacts of this controversial public policy. Science, particularly agricultural economics, can play a role in improving the quality of planning and implementation of a reformed CAP. The preparation of Member States' Strategic Plans (SP) is rather formalistic, while the plans are not very rigorously designed. A major weakness is related to the CAP's political-economic characteristics and lies in the selection and definition of interventions: financially strong but poorly targeted interventions tend to be pre-fixed, which prevents a stronger focus on the results and quality of planning. The intervention logic functions as a black box, as the links between policy priorities and interventions are merely implied, with no clear, evidence-based links. Therefore, European decision makers should re-examine the concept of CAP SP and especially improve a support system and capacity building for SP designers. Greater involvement of academic research and scientific methods and tools in the preparation, monitoring and evaluation of plans, could significantly improve the quality of planning. This would require increased investment in research and dialogue among representatives of academia, government and the nongovernmental sector.     

International migration and universal healthcare access: evidence from Mexico’s ‘Seguro Popular’

Although ‘Seguro Popular’ (SP), a healthcare programme for the uninsured, has been in place in Mexico for more than a decade, its consequences for international migration both to and from the country have received little scholarly attention. Using the spatial variation in the programme’s coverage generated through the rollout over time, this paper examines the effects of SP on the number of emigrants and return migrants per household. Based on data from Mexico’s National Survey on Demographic Dynamics for 1997–2014, the analysis confirms that being affiliated to SP does not reduce the number of emigrants per household, but such affiliation is, however, positively related to the number of returnees per household. These results are valid across different subsamples of the population and time periods and are robust to omitted variable bias. Our findings have important implications for understanding the effects of social protection policies on international migration patterns.     

The Economic Growth Impacts of Sugarcane Expansion in Brazil: An Inter‐regional Analysis

Since 2001, Brazil has experienced a sharp increase in sugarcane production due to the upsurge in demand for sugar and ethanol, two products derived from sugarcane. This study analyses the impacts of these sugarcane expansions on economic growth. The effects are examined at the municipality level in Brazil as a whole and in the main sugarcane producing regions, the North‐Northeast (NE) and the Centre‐South (CS). In this latter region, an additional distinction is made between the state of São Paulo (SP) and the Centre‐South region excluding São Paulo (CSex) since the bulk of the recent expansion took place in SP while most of the future expansions are planned in CSex. Estimators based on the propensity score are used to construct two types of counterfactual scenarios. The estimations in the first scenario show that municipalities in NE and CSex that expanded sugarcane production experienced economic growth as a result. No significant effect was found in SP. The second scenario focuses on CSex and establishes that sugarcane non‐expanding municipalities in this region would have had higher economic growth if they had increased sugarcane production. The results of this study suggest that future sugarcane plantations should indeed be located in CSex because they contribute to economic growth.     

消费者对安全认证农产品自述偏好与现实选择的一致性及其影响因素——以生鲜认证猪肉为例

以生鲜认证猪肉产品为例,本文利用对北京市城镇消费者的问卷调查数据,实证分析了消费者对安全认证农产品自述偏好与现实选择的一致性及其影响因素。结果显示,尽管50%以上的消费者对生鲜认证猪肉有自述偏好,其食品质量安全意识较强,但是,消费者对生鲜认证猪肉自述偏好与现实选择之间存在着较大的差异。消费者受教育程度、消费者家庭月收入、家中是否有18岁以下的孩子和家庭人口规模等是影响其对生鲜认证猪肉自述偏好与现实选择一致性的个人特征和家庭特征因素。消费者对生鲜认证猪肉的意愿支付价格、消费者对质量安全认证知识和认证农产品的了解程度显著正向影响其对生鲜认证猪肉自述偏好与现实选择的一致性。此外,消费者的食品质量安全意识和其所感知到的生鲜猪肉产品的质量安全隐患等变量也会较显著地影响其对生鲜认证猪肉自述偏好与现实选择的一致性。     

Convergent validity between revealed and stated recreation demand data: Some empirical evidence from the Basque Country,Spain

In a travel cost exercise, reported past visits to mount Jaizkibel, a natural area located in the Basque Country (Spain), are compared for convergent validity to stated intended future trips under the assumption that the natural resource's conditions will remain the same. In line with the results obtained by other studies, the empirical evidence of this application suggests that revealed preferences (RP) and stated preferences (SP) do not produce consistent data, i.e. do not achieve convergent validity. The paper deals with the convergent validity literature in continuous-choice studies by using two-staged count data models for recreation demand. Differences in preference structures and welfare estimates are tested assuming both common and different data generating processes for the RP and SP data.     

Combining Stated and Revealed Preferences on Typical Food Products: The Case of Dry‐Cured Ham in Spain

An extensive body of research concerns the valuation of EU certification schemes of quality based on the origin of food products. This literature focuses mainly on stated preferences (SPs) and reported behaviours by the consumers. We combine consumers’ SPs, obtained through a conjoint ranking experiment, with revealed preferences (RP), obtained through a retail scanner database. We evaluate SPs as predictors of RP, and investigate whether SPs and RPs are consistent. Dry‐cured ham in Spain is chosen as the anchor product, mainly because of its broad customer base and long history of origin certification. A ‘trick’ nested logit model with non‐identical and identical samples of consumers is estimated to answer each of the objectives. Results show that, irrespective of the analysed samples, SP can predict general market trends and choices but not accurately predict market shares, and that consumers’ actual behaviour is partly consistent with their SPs. We find that consumers prefer ham produced in Teruel, compared with unspecified Spanish origin. Quality Certification and a Distributor’s Brand are preferred over the alternatives of no quality label or identified with a brand owned by the producer. Interestingly, SPs for the Quality Certification and the distributor’s brand lead to an over‐ and under‐estimation, respectively, of the market share.     

Consumers’ Preferences for Bread: Transgenic,Cisgenic, Organic or Pesticide‐free?

Consumers are apprehensive about transgenic technologies, so cisgenics, which limit gene transfers to sexually compatible organisms, have been suggested to address consumer concerns. We study consumer preferences for rye bread alternatives based on transgenic or cisgenic rye, grown conventionally or without the use of pesticides, relative to traditionally bred rye, grown with conventional or organic farming methods. Stated preference (SP) data from a choice experiment are combined with revealed preference (RP) data from market purchases from the same respondents. Results show that respondents prefer pesticide‐free production methods, and that while cisgenics is preferred over transgenics, the majority of respondents favour traditional breeding methods. The distribution in preferences suggests that some respondents prefer bread from cisgenic crops produced without pesticides over traditional crops produced using pesticides. Preferences for organic bread are stronger than for pesticide‐free products. From a policy perspective results suggest that excluding cisgenics from mandatory labeling in the EU, or including it in the voluntary non‐GM labelling in the US, would cause welfare losses for consumers.     

甘肃省水价改革初探

针对甘肃省水价现状和存在的问题，分析农业水价、工业水价、城市生活水价和污水处理费征收情况等，提出加快水价管理法规体系建设；加强成本核算和控制，促进良性运行；加强水费计收和使用管理，提高资金使用效率；保持农灌电价稳定；加大田间工程和计量设施的投入力度；提高城市生活水价、工业用水水价、污水处理费征收标准，为水务管理良性运行奠定基础等措施。     

A cross-section analysis of household demand for food and nutrients in Tanzania

Undernutrition and malnutrition are still problems of unacceptable proportions in many developing countries. However, the debate on the roles of income and other socio-economic variables such as women’s education and household size on food and nutrient demand continues. This study examines the demand for food and nutrients amongst households in Tanzania, using recent survey data. A quadratic almost ideal demand system (QUAIDS) is employed to estimate price and expenditure elasticities, as well as the impact of socio-economic variables on food demand patterns. A moment-based instrumental variable approach is then used to analyse the determinants of nutrient demand. The results show that income and other socio-economic variables exert significant effects on the demand for food and nutrients. The estimated expenditure elasticities for the nutrients range from 0.307 for iron to 1.26 for Vitamin B₁₂. The elasticities are higher for those micronutrients that are consumed through animal products and lower for those micronutrients that are mainly obtained through staple foods. These results reflect the higher expenditure elasticities for meat, fish, eggs, milk, and milk products, as well as fruits and vegetables, relative to cereals and pulses, reinforcing the assertion that the demand for Vitamins A and B₁₂, as well as calcium and zinc will increase with rising income.     

Constructing landscapes of value: Capitalist investment for the acquisition of marginal or unused land—The case of Tanzania

The current global wave of land acquisition – variously debated as land grabbing or investment in land – is promoted by the World Bank and the FAO as creating win–win-situations for local populations and investors alike. Common policy recommendations suggest expanding the production of export crops, by making use of marginal or unused land. Considerable potentials for such an expansion are assumed. Taking Tanzania as a case study, the evidence for such types of land is assessed by using a broad range of statistics. We will argue firstly, that the terms marginal and unused land serve as a manipulative terminology for the benefit of attempts to commercially valorize and commodify African landscapes, from biofuel to large-scale food production and tourism. However, they relate to different rationalities of domination. Unused land refers to a state-bureaucratic narrative, which excludes user groups deemed irrelevant for national development, while marginal land refers to a capitalist-economic narrative that excludes what is not profitable. Secondly, the terms are analyzed as categories central for state simplification of social relations attached to land. Modelling of these land use categories based on remote sensing is an attempt to compensate weak state capacities to enhance the legibility of the landscape by constructing it as a landscape of commercial value.     

河流洪泛湿地的功能特征及综合开发利用--以向海湿地为例

以向海湿地为例，分析了典型的河流洪泛湿地的功能特征，即蓄洪防旱，调节径流，控制洪水，净化过滤污染物，为珍稀生物提供栖息地以及巨大的初级生产功能等。为综合开发利用河流洪泛湿地资源，提出了先获取湿地要素指标，建立评价指标体系，再做好综合开发示范，调整，恢复和保护生态系统。     

海岛开发的重大意义及其生态路径选择——以山东省长岛县为例

随着国际社会涉海主权意识的增强,海岛已成为各临海国家重要的利益争夺点和国家经济可持续发展的重要支撑要素。论文认为对其开发应从理性角度出发,选择生态保护优先的路径,并提出了海岛开发生态路径的定义、目的、影响因素及实施步骤。而后,以山东省唯一的海岛县——长岛县为例,研究其海岛开发的具体生态路径,提出实现清洁开发、建立生态养殖岛、实现循环经济等措施和建议。     

Payments for environmental services to promote “climate‐smart agriculture”? Potential and challenges

Payments for environmental services (PES) have gained wide popularity as approaches to promote environmentally friendly land use or agricultural production practices. Yet academics have also voiced concerns against seeing PES as a panacea. This article discusses whether PES is an appropriate and promising approach to promote so‐called “climate‐smart agriculture” (CSA) practices, which we define as agricultural production practices that contribute to CO₂ emission reductions and/or removals and provide benefits to farmers via increased productivity and profits and reduced vulnerability to climate change. PES appears most promising for the promotion of CSA practices in small‐scale farming contexts with low incomes. Effective design, however, requires solid estimates of cost and benefit flows from CSA adoption over time, accounting for differences in socioeconomic and ecological conditions, and addressing the risk of leakage. Funding for such PES will likely have to come from public sources, and seems most promising where synergies with other objectives such as agricultural development, food security, and climate adaptation or other environmental services exist. The potential of alternative approaches for CSA support such as taxation with rebates for CSA practices, CSA‐related investment support such as microcredits, and hybrid approaches such as conditional microcredit should be further investigated.     

Economics of an Integrated Manurial Biogas and Protein Recovery System for Beef Cattle

Fermentation of livestock manure for the production of biogas is not economically viable given current and prospective energy prices, as long as the residue from the fermentation process is used on agricultural land as a source of crop nutrients. An alternative use of the residue is to separate out the solid fraction for use as a source of protein and minerals for livestock. This alternative was evaluated for a commercial beef feedlot in Ontario, and was found to provide attractive returns using feed replacement values for the residue solids, even when a zero value was attributed to the biogas, and when real interest rates reached 7 percent. Economies of size were also found.     

Organic‐ and Animal Welfare‐labelled Eggs: Competing for the Same Consumers?

To understand the market for sustainable foods, it is important to allow for heterogeneous preferences. However, most studies of consumer preferences for sustainable foods only investigate average consumer preferences. They do not take into account that some consumer segments attempt to purchase as much sustainable food as possible, others are almost indifferent to the notion of sustainable food, and still others consider sustainable food a complete hoax. The aim of this study is to explore the preferences for various types of premium eggs across three consumer segments. We conduct a choice experiment including 900 Norwegian consumers and perform a behavioural segmentation based on the frequency of organic food purchase. We find that the segment purchasing the most organic food is, as expected, willing to pay a significant premium for organic eggs over eggs displaying only enhanced animal welfare. However, most consumers, who only occasionally purchase organic products, are unwilling to pay more for organic eggs than for enhanced animal welfare eggs, suggesting diminishing marginal utility for additional attributes. We find that a third consumer segment attempts to avoid organic eggs, even when they cost the same as other eggs. Our findings suggest that organic products will be unsuccessful in acquiring a larger share of the market as long as most consumers are unwilling to pay a premium for organic products with all their cost increasing sustainable attributes over products that have only a single sustainable attribute, in our case enhanced animal welfare.     

Free in the mountains or home in the vineyard: Institutional changes in agriculture and negotiating between contract farm labour and valuable fungi collection in Tibet

This paper evaluates how Tibetan farming communities choose between two methods of livelihood production: working as labourers on vineyard land they have leased to a French winery or collecting valuable fungi. I argue new transnational land and labour management, as part of institutional rearrangements in land tenure, are leading to significant changes with mixed benefits for rural farming communities. These communities respond by seasonally seeking freedom from capitalist labour and returning to communal forms of income production based around community land tenure and common‐pool resources. Although villagers have become contracted labour, they choose to escape this new agricultural work in the mountains, collecting fungi together as a community. The common‐pool land on which fungi are collected is also managed for access in a specific way by and for the community. Contrary to agricultural labour for the winery, fungi collection creates a chance for people to interact once again more as a cohesive community as they once did in their fields by collecting a commodity from land controlled by the community. The disembedding of one section of the economy has thus in a way reinforced the embeddedness of social relations in another as a coping mechanism for the former.