Scientific and Technological Management of Land and Resources

（Bimonthly，Startedin１９８４）２００１CONTENTSNo．１（GeneralSerialNo．９１）PromoteSustainableDevelopmentoftheCauseofLandandResourcesbyMeansofScientificandTechnologicalInnovation……HeadofDepartmentofInternationalCooperationandScienceandTechnology，Min     

Simulation and expe

ed control method can compensate the reactive power, improve the power factor and stabilize the DC voltage effectively.Sliding mode variable structure, space vecto     

SPS and TBT agreements and international agricultural trade: retaliation or cooperation?

In this article, we investigate whether the Brazilian notifications to the TBT and SPS agreements are characterized as retaliation or as cooperation in international agricultural trade in the period 1996–2008. A Generalized Method of Moments (GMM) model is used to estimate game models of bilateral trade between Brazil and its major partners (United States, European Union, and Japan). From the viewpoint of strategic games, the results suggest that the Brazilian notifications are forms of retaliation against the United States, and, regarding the European Union, the best result for Brazil was conciliation. On the other hand, if the results are interpreted as equilibria of bargaining games, they suggest that Brazil has great bargaining power in trade with the United States and that cooperation characterized agricultural trade between Brazil and the European Union in the period analyzed. In the case of agricultural trade between Brazil and Japan, only Japan has characteristics of a country with significant bargaining power.     

Is Pakistan's Growth Rate Balance-of-Payments Constrained? Policies and Implications for Development and Growth

This paper examines the extent to which Pakistan's growth has been, or is likely to be, constrained by its balance of payments. Evidence presented suggests that Pakistan's maximum growth rate consistent with equilibrium on the basic balance is approximately 5% per annum. This is below the long-term target GDP growth rate of 7–8% per annum. This balance-of-payments constrained growth approach provides some important implications for Pakistan's development policy. Real exchange rate depreciations will not lead to an improvement in the current account. Pakistan must lift the constraints that impede higher growth in exports. In particular, it must shift its export structure towards more sophisticated products with a higher income elasticity of demand.     

Farm households and nonfarm activities in Ethiopia: does clustering influence entry and exit?

This article examines how clustering affects the entry and exit decisions of farm households into and from nonfarm enterprises in rural Ethiopia. We find that the existence of clusters of microenterprises in the same district increases the likelihood of a rural household to start a nonfarm enterprise. Similarly, clustering of big manufacturing firms in the same zone is found to increase the likelihood of farm households to start a nonfarm enterprise. Nonfarm enterprises operating in clusters are also found to have a lower probability of exit than those operating outside of clusters. The study further investigates the impact of entry and exit into and from nonfarm enterprises on farm household's well‐being using as indicators total household income, the food security status of a household, and the household's ability to raise enough money in case of emergency. Using propensity score matching to account for selection bias, we find that entry into nonfarm enterprises significantly increases household's income and food security status. Exit from nonfarm enterprises, on the other hand, is found to significantly reduce household's income.     

甀mamuraaki’and ‘Amanoga

to be the parents of‘Niitaka’were also included. PCR-RFLP analysis of genomic DNAs of the 12 cultivars, nucleotide sequencing of amplified fragments and sequence analysis were performed. As the results, the ten cultivars of Niitaka line were genotyped as follows: ‘Niitaka’(S3S9), ‘Whang Keum Bae’(S3S4),‘Sujeong’(S3S9), ‘Joseng Whang Keum’(S3S4), ‘Soumi Tuniitaka’(S3S9), ‘Yewang’(S3S9), ‘Jinqiu’(S3S9), ‘     

African Perspectives on China–Africa: Modelling Popular Perceptions and their Economic and Political Determinants

China's recent political and economic inroads into Africa have generated much interest in the current literature, with scholars and policymakers endeavouring to assess the merits and risks implicit in this renewed engagement. Absent from the literature, however, are systematic analyses of African perceptions of these rapidly growing China–Africa links, and what determines these perceptions. This article fills this void by examining not only African attitudes towards China's African presence, but also investigating the considerations that inform these views. Using multi-level modelling techniques, this article estimates the effects of Chinese foreign direct investment (FDI), Sino-African trade and notions of democracy and human rights on African attitudes towards “China-in-Africa”. The results suggest that Africans' views of China are nearly equivalent to those that they hold vis-à-vis Western countries. The perceived impact of imports from China has a negative effect. However, this effect is counter-balanced by perceptions of China's impact on poverty alleviation—in line with its greater focus on economic, social and cultural, as opposed to civic and political human rights—in particular through FDI. Among those who value civic and political human rights, in contrast, attitudes towards China are less favourable. This finding is echoed with respect to democratic governance, though the effect is less stable. The results are derived from Afrobarometer data covering 20 African countries.     

Scientific and Technological Management of Land and Resources (Bimonthly,Started in 1984) 2002 CONTENTS

No.1（General Serial No.97）Enormous Development of High Technology in China's Marine Exploration …………………………………………………………………………GAOPingetal．( 1 )A Discussion on Assessment System for Fossil Resource in Guizhou Province…………………………………………………………………YANGRui－dongetal．( 8 )Management of National Land Property in Anhua Country, Hunan Province………………………………………………………………HUANGFeng－shengetal．(14)A Study of Populatio…     

The Effects of Maize Market and Policy Reforms on Price Discovery and Competitiveness in Zimbabwe, 1991–1997

Abstract

Maize is Zimbabwe's staple food. An adequate supply of maize is essential to food security and domestic stability. A series of droughts and government mismanagement of the economy led to a maize production and food security problem in the 1980s. Zimbabwe's maize marketing system was transformed dramatically from a government monopoly to a competitive market system in which prices are determined by market forces in the 1990s. This paper examines the steps that Zimbabwe took towards maize market reform and the benefits of that reform. The movement to a competitive market led to formation of a commodity exchange to improve price discovery and increase price transparency. De-regulation has increased entry and competitiveness from new private sector hammer millers and traders. Farmers, millers, and traders face new profit opportunities and new price and financial risks that have increased management responsibilities. Consumers enjoy lower cost maize meal products and more convenient service. The benefits of the 1991–1997 reforms indicate what could be achieved in the long run if prices are determined by the market, rather than by the government.     

Consumers’ Perceptions and Behaviors Regarding Organic Fruits and Vegetables: Marketing Trends for Organic Food in the Twenty-First Century

ABSTRACT

Organic food market is very challenging in Europe and developing rapidly with different rates between the western and eastern parts. The objective of this report is to gain knowledge about attitudes toward organic fruits and vegetables among Slovenian consumers. Results indicated that organic buyers tend to be younger and higher educated than those who do not buy them. In addition, consumers’ trust in the authenticity of the goods and price are also issues. However, the main barrier to increase the market share of organic products is consumer information. According to the research results an important task for the producers will be to increase consumers’ knowledge of what an organic product is and how to differentiate it in the marketplace. Along with knowledgeable and educated consumers, consumption could be raised on another level. The results of the research could be used for planning further marketing activities.     

Why do medium- and large-scale farmers succeed practicing CA and small-scale farmers often do not? – experiences from Paraguay

Conservation agriculture (CA) is defined as a system comprising no or minimum mechanical soil disturbance, permanent organic soil cover, and crop species diversification [FAO. (2014). What is Conservation Agriculture? FAO CA website, consulted on 15.09.2014. Retrieved September 15, 2014, from http://www.fao.org/ag/ca/1a.html]. The vast majority of medium- and large-scale farmers in Paraguay and neighbouring countries (Argentina, Brazil, and Uruguay) who use tractor-based farming systems have moved from conventional agriculture and adopted CA through no-tillage technologies. Among this farmer type, very few wish to return to the old system of tillage agriculture. However, despite massive efforts to transmit the technology to small-scale farmers by development aid projects and local governments, widespread adoption of CA has not happened on farms that use animal traction or manual farming systems; in fact significant dis-adoption of CA practices by smallholders has occurred. Some of the reasons for this dynamic are analysed in this paper. The reasons for dis-adoption by small-scale farmers can be generally divided into two groups. One group has to do with the fact that, comparatively, small-scale farmers are less able to cope with the factors related to CA (e.g. degraded soils, recuperating and maintaining soil fertility and know-how) than medium- and large-scale farmers. The second group of reasons has to do with the approaches and strategies that development aid agencies and local governments have taken towards small-scale farmers, which have influenced small-scale farmers’ ability to adopt and maintain CA practices. Small-scale farmers’ main asset is the soil and the CA/no-tillage system is a knowledge-based, learning-intensive system. However, despite the technical support provided by aid agencies and local governments, small-scale farmers often lack a deeper understanding of the CA concepts and practices. This is attributable to the short- to medium-term and rather conservative transfer-of-technology approaches that have been applied by development aid agency and local government programmes over the years, without any changes and without adaptive research. The latter can be derived, for instance, from the accountability of results to donor agencies or the one-size-fits-all approach applied in order to achieve ‘numbers’. One consequence of this is that ownership by and empowerment of farmers is often absent among dis-adopters. It therefore seems more suitable to apply long term, adaptable approaches to CA with smallholders. The lessons learned in Paraguay may well serve to properly direct future development intervention efforts in this country and also serve to mend development strategies in other countries in South and Central America, Africa or Asia.     

How Do Health and Social Insurance Programmes Affect the Land and Labour Allocations of Farm Households? Evidence from Taiwan

To protect farmers from health care costs and risks to livelihood, most countries have developed special health and social insurance programmes specifically for farmers. While numerous studies have examined the determinants of participation in these programmes, little is known about how they influence famers' land and labour allocations. Without government‐sponsored health and social insurance, farmers may seek off‐farm employment in order to obtain similar benefits. Conditioning eligibility for social insurance on minimum land holdings and on‐farm work days can lead to delayed retirement and other forms of job lock. We investigate these issues using a unique dataset of 703,287 farms in Taiwan. After controlling for non‐random participation in Taiwan's social insurance programme, we find that the programme increases (decreases) on (off) farm labour supply, and decreases the amount of set‐aside land. This suggests that payments from social insurance substitute for those issued through land set‐aside programmes to some extent, and that failing to account for this substitution increases the cost of achieving both programmes' objectives.     

Scientific and Technological Management of Landand Resources 2004 CONTENTS

StrengthenStudyandSurveyofMineralResourcesinQinghai-TibetanPlateautoSecureSupplyofNationalResources………………PANGui-tang,DINGJunetal.(1)ADiscussiononLandPropertyHandlinginSystemReformofState-ownedEnterprises……………………………………………TANWu-ying,SHIYong-liang(5)AnAnalysisofInvisibleLandMarketfromEconomics ………………………………………………………………………………ZHOULing,YANGGang-qiao(9)AStudyofDynamicEquilibriumofIndustrialLand………………………………………………     

Progressive politics and populism: Classes of labour and rural–urban political sociology—An introduction to the special issue

This special issue analyses the prospects for a progressive politics against right-wing populism and capitalism. Taken as a whole, its articles underline the need to understand progressive movements as encompassing agrarian, rural, and urban settings and as socially rooted among labourers and petty commodity producers that do not accumulate (classes of labour), which includes the majority of farmers. Most of the world's rural population now reproduce themselves to some degree in towns and cities, which necessitates further development of a rural–urban political sociology. Articles in the special issue discuss existing and potential organizations and networks of classes of labour. They point to the political potential of migrant populations to erode the social divisions of race, ethnicity, and nationality that capitalism and right-wing populism construct to defend their interests. They contribute to understanding of why some members of classes of labour support racist nationalist populisms that pit them against fellow members of classes of labour. And they show why national contexts matter. Forms of capitalist government, including varieties of populism, are linked to world-historical dynamics of accumulation and reproduction, as well as racialized class relations, and constrain routes to progressive politics in different ways. Analysis of them can inform counter-strategies.     

Characterisation and Diagnosis of Rural—Urban Interface Farming in the Tu Liem and Thanh Tri Districts of Hanoi City,Vietnam

A research project was carried out in two areas in the outskirts of Hanoi city using a combination of qualitative and quantitative methods. The objective was to study interactions among the vegetable farming systems and the peri-urban context within which they are situated. The farms studied were characterised as small-scale farms that use high inputs of soil amendments and pesticides for diversified crop rotation systems. The main source of irrigation water and nutrients for vegetable farming in southern Hanoi is wastewater from the To Lich River. In northern Hanoi, irrigation water is obtained directly from the Red River and nutrients are supplied through high fertiliser inputs. The concentrations of COD (144–287 mg l^?1), N-NH₄ ⁺ (1–25 mg l^?1), PO₄ ^3? (0.5–4 mg l^?1) and coliform (525 × 10³?28 × 10⁶ MPN 100 ml^?1) along the To Lich River was much higher than the limits specified in the Vietnamese standard for water used in agriculture. A higher Cu content in soil in Phuc Ly seems to be linked to the high input of chicken manure at the site. However, the contents of heavy metals in irrigation water, in vegetables and in the soil surface layer at the two sites were lower than the Vietnamese maximum permissible levels.     

Climate adaptation imperatives: global sustainability trends and eco-efficiency metrics in four major crops – canola,cotton, maize,and soybeans

Supplying our world's growing nutrition needs in more sustainable ways has become an urgent global imperative, given the constraints of finite resources and the challenges of accelerating climate change. We present national-level eco-efficiency metrics in several representative production countries during the most recent decade (2000–2010) for four important crops: canola, cotton, maize, and soybeans. The metrics address greenhouse gas emissions and the utilization of land, water, and energy – all calculated per unit of production. We group countries based on their level of agricultural intensification and find that high-intensification countries are achieving the highest and yet still increasing levels of eco-efficiency, with these decadal gains: canola (26%), cotton (23%), maize (17%), and soybeans (18%). By stark contrast, low-intensification countries had no change in eco-efficiency during this same decade. Overall, our results suggest large opportunities for additional improvements in the developing world, and that cumulative resource savings through intensification have been significant. For instance, in the case of irrigated maize, if the high- and medium-intensification production countries had only achieved the same irrigation water-use efficiency as in the low-intensification countries, approximately 4 quadrillion (4×10¹⁵) more litres of irrigation water would have been consumed during the period 2000–2010.     

Food first! Theorising assets and actors in agroforestry: risk evaders,opportunity seekers and ‘the food imperative’ in sub-Saharan Africa

Despite widely recognised and well-established benefits, it is difficult to adopt the multifunctional activity of agroforestry into the landscape and lifeworld of small-scale agriculture, if poverty, itself a main reason for adopting agroforestry, stands in its way. Based on participant observations and interviews with small-scale farmers in western Kenya, we explore and theorise agroforestry adoption as a process of socio-ecological and socio-technological change. Proceeding from sustainability science and a modified livelihoods approach we use grounded theory in ‘narrative walks’ to analyse adoption and non-adoption of agroforestry in a setting where farmers continuously interpret, adjust to and invest in their environment. Given the diversity and complexity of such livelihoods, the analysis is structured around reproductive and productive chains, strategies and practices defined by uncertainty and risk, and conflicting interests. Findings indicate that food secure farmers may act as entrepreneurially inclined ‘opportunity seekers’ and venture into agroforestry, whereas the ‘food imperative’(alongside the ‘health imperative’) makes it more difficult for agroforestry to take root among the ‘poorest of the poor’ who act as ‘risk evaders’. Hence, agroforestry adoption must be understood within an integrated human–environment frame recognising the socio-ecological relations of technology adoption and the wider political aspects and power structures of food security.     

Energy productivity and greenhouse gas emission intensity in Dutch dairy farms: A Hicks–Moorsteen by-production approach under non-convexity and convexity with equivalence results

The agricultural sector is currently confronted with the challenge to reduce greenhouse gas (GHG) emissions, whilst maintaining or increasing production. Energy-saving technologies are often proposed as a partial solution, but the evidence on their ability to reduce GHG emissions remains mixed. Production economics provides methodological tools to analyse the nexus of agricultural production, energy use and GHG emissions. Convexity is predominantly maintained in agricultural production economics, despite various theoretical and empirical reasons to question it. Employing non-convex and convex frontier frameworks, this contribution evaluates energy productivity change (the ratio of aggregate output change to energy use change) and GHG emission intensity change (the ratio of GHG emission change to polluting input change) using Hicks-Moorsteen productivity formulations. We consider GHG emissions as by-products of the production process by using a multi-equation model. Given our empirical specification, non-convex and convex Hicks-Moorsteen indices can coincide under certain circumstances, which leads to a series of theoretical equivalence results. The empirical application focuses on 1,510 observations of Dutch dairy farms for the period of 2010–2019. The results show a positive association between energy productivity change and GHG emission intensity change, which calls into question the potential of on-farm, energy-efficiency-increasing measures to reduce GHG emission intensity.