Download or read book Land plot size machine use and agricultural intensification in China written by Yanyan Liu and published by Intl Food Policy Res Inst. This book was released on 2019-08-31 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: China has experienced unprecedented economic achievement for more than three decades and remains one of the fastest growing economies in the world. Rapid urbanization and development of the non-farm economy have led to massive movements of labor from rural to urban areas, leaving agricultural production mostly in the hands of female and senior farmers. Due to considerable surplus labor in rural areas, these changes did not raise concerns about agricultural production until recently, when the rural real wage experienced a sharp rise, signaling the exhaustion of this surplus. Since 2010, China has changed from a net exporter to a net importer of grains. Currently, China’s self-sufficiency ratio of wheat, rice and corn is about 95%. About 80% of consumed soybean and other agri-products, such as milk and sugar, are imported. As the world's most populous country, further reduction of self-sufficient ratio of major agri-products could lead to problems in food security world-wide. In order to maintain agricultural production as labor costs continue to rise, agricultural labor input will need to be substituted with machine input. China's farming system, like that of many Asian Countries, is characterized by small landholdings, a high degree of land fragmentation, and high intensification at both the intensive and extensive margin. Although China has experienced rapid farm mechanization in recent decades thanks to the rapid development of machinery rental markets, the extent to which mechanization can be realized in China's farming system remains a critical question. Small plot size poses serious constraints for mechanization because of scale economies of machine. In addition, a considerable amount of China's land is located in hills or mountains, posing further difficulties for mechanization. Recently we completed a study to explore the extent to which small plot size deters mechanization in China and the implications for agricultural production, specifically the number of cultivating seasons per year. In our field trips in China, we often observed that small plots were less frequently cultivated; the farmers we interviewed attributed this reduced intensification to the difficulty of using machines on small plots, especially if these plots are in mountainous and hilly areas. Cultivating in these small plots become less worthwhile when labor costs increase.
Download or read book Sustainable Intensification written by Jules N. Pretty and published by Routledge. This book was released on 2012-06-25 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Continued population growth, rapidly changing consumption patterns and the impacts of climate change and environmental degradation are driving limited resources of food, energy, water and materials towards critical thresholds worldwide. These pressures are likely to be substantial across Africa, where countries will have to find innovative ways to boost crop and livestock production to avoid becoming more reliant on imports and food aid. Sustainable agricultural intensification - producing more output from the same area of land while reducing the negative environmental impacts - represents a solution for millions of African farmers. This volume presents the lessons learned from 40 sustainable agricultural intensification programmes in 20 countries across Africa, commissioned as part of the UK Government's Foresight project. Through detailed case studies, the authors of each chapter examine how to develop productive and sustainable agricultural systems and how to scale up these systems to reach many more millions of people in the future. Themes covered include crop improvements, agroforestry and soil conservation, conservation agriculture, integrated pest management, horticulture, livestock and fodder crops, aquaculture, and novel policies and partnerships.
Download or read book Land Utilization in China written by John Lossing Buck and published by . This book was released on 1956 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agricultural Reform in China written by Simon Powell and published by Manchester University Press. This book was released on 1992 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wage Growth Landholding and Mechanization in Chinese Agriculture written by and published by . This book was released on 2014 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This paper uses farm panel data from China to examine the dynamics of land transactions, machine investments, and the demand for machine services. Recently, China's agriculture has experienced a large expansion of machine rentals and machine services provided by specialized agents, which has contributed to mechanization of agricultural production. The empirical results show that an increase in nonagricultural wage rates leads to expansion of self-cultivated land size. A rise in the proportion of nonagricultural income or the migration rate also increases the size of self-cultivated land. Interestingly, however, relatively educated farm households decrease the size of self-cultivated land, which suggests that relatively less educated farmers tend to specialize in farming. The demand for machine services has also increased if agricultural wage and migration rate increased over time, especially among relatively large farms. The results on crop income support the complementarity between rented-in land and machine services (demanded), which implies that scale economies are arising in Chinese agriculture with mechanization and active land rental markets"--Abstract.
Download or read book China Report written by and published by . This book was released on 1984-10-03 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Three Essays on Agricultural Development and Environmental Economics in China written by Wangyang Lai and published by . This book was released on 2017 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the first chapter, I investigate the effect of land fragmentation on machinery use as well as the effect of machinery use on crop production. The data come from a farm survey in Hebei and Shandong provinces in 2008. Endogeneity is addressed by utilizing land fragmentation due to previous long-term land assignment as an instrument and first difference estimation between normalized wheat and corn output from the same plots in the same year. The main results indicate that consolidating an average farm of 0.31 hectares from 2.28 plots to one plot increases machinery use by about 10%. Further, a 10% increase of machinery use increases crop production between 0.5% and 1%.
Download or read book Seeking a Richer Harvest written by Tina Thurston and published by Springer Science & Business Media. This book was released on 2006-11-25 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: Subsistence intensification, innovation and change have long figured prominently in explanations for the development of social complexity among foragers and horticulturalists. This set of global case studies re-examines the ‘subsistence question’ in light of recent research. It contrasts traditional approaches with recent archaeological research that presents human driven strategies for power, prestige, and status as causes of subsistence intensification.
Download or read book Land Use and Land Cover Change written by Eric F. Lambin and published by Springer Science & Business Media. This book was released on 2008-01-08 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents recent estimates on the rate of change of major land classes. Aggregated globally, multiple impacts of local land changes are shown to significantly affect central aspects of Earth System functioning. The book offers innovative developments and applications in the fields of modeling and scenario construction. Conclusions are also drawn about the most pressing implications for the design of appropriate intervention policies.
Download or read book Agricultural land and environmental risks Evidence assessment and conservation transition written by Xiangbin Kong and published by Frontiers Media SA. This book was released on 2024-02-01 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An evolving paradigm of agricultural mechanization development How much can Africa learn from Asia written by Diao, Xinshen, ed. and published by Intl Food Policy Res Inst. This book was released on 2020-12-07 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agricultural mechanization in Africa south of the Sahara — especially for small farms and businesses — requires a new paradigm to meet the needs of the continent’s evolving farming systems. Can Asia, with its recent success in adopting mechanization, offer a model for Africa? An Evolving Paradigm of Agricultural Mechanization Development analyzes the experiences of eight Asian and five African countries. The authors explore crucial government roles in boosting and supporting mechanization, from import policies to promotion policies to public good policies. Potential approaches presented to facilitating mechanization in Africa include prioritizing market-led hiring services, eliminating distortions, and developing appropriate technologies for the African context. The role of agricultural mechanization within overall agricultural and rural transformation strategies in Africa is also discussed. The book’s recommendations and insights should be useful to national policymakers and the development community, who can adapt this knowledge to local contexts and use it as a foundation for further research.
Download or read book Remote Sensing of Land Use and Land Cover written by Chandra P. Giri and published by CRC Press. This book was released on 2012-05-02 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filling the need for a comprehensive book that covers both theory and application, Remote Sensing of Land Use and Land Cover: Principles and Applications provides a synopsis of how remote sensing can be used for land-cover characterization, mapping, and monitoring from the local to the global scale. With contributions by leading scientists from around the world, this well-structured volume offers an international perspective on the science, technologies, applications, and future needs of remote sensing of land cover and land use. After an overview of the key concepts and history of land-use and land-cover mapping, the book discusses the relationship between land cover and land use and addresses the land-cover classification system. It then presents state-of-the-art methods and techniques in data acquisition, preprocessing, image interpretation, and accuracy assessment for land-use and land-cover characterization and mapping. Case studies from around the world illustrate land-cover applications at global, continental, and national scales. These examples use multiple data sources and provide in-depth understanding of land cover and land-cover dynamics in multiple spatial, thematic, and temporal resolutions. Looking to the future, the book also identifies new frontiers in land-cover mapping and forecasting. The availability and accessibility of accurate and timely land-cover data sets play an important role in many global change studies, highlighting the need for better land-use and land-cover change information at multiple scales. A synthesis of current knowledge in remote sensing of land-use and land-cover science, this book promotes more effective use of Earth observation data and technology to assess, monitor, and manage land resources.
Download or read book Agricultural Land Improvement Amelioration and Reclamation Volume I written by Boris Stepanovich Maslov and published by EOLSS Publications. This book was released on 2009-09-23 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agricultural Land Improvement: Amelioration and Reclamation theme is a component of Encyclopedia of Food and Agricultural Sciences, Engineering and Technology Resources in the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty one Encyclopedias. The theme on Agricultural Land Improvement: Amelioration and Reclamation has two volumes with contributions from distinguished experts in the field, discusses amelioration practices and measures for radical improvement of unfavorable hydrologic, soil, and agroclimatic conditions, with a view to the most efficient use of land resources. The content of the theme is organized with state-of-the-art presentations covering the following aspects of the subject: Necessity of Development of Land Reclamation; Irrigation; Drainage of Farmlands; Chemical Amelioration of Soils; Biological and Agrotechnical Amelioration, which are then expanded into multiple subtopics, each as a chapter. These volumes are aimed at the following five major target audiences: University and College Students Educators, Professional Practitioners, Research Personnel and Policy Analysts, Managers, and Decision Makers and NGOs
Download or read book Parametric Decomposition of the Malmquist Index in an Output Oriented Distance Function written by Bingxin Yu and published by Intl Food Policy Res Inst. This book was released on 2013-02-25 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The paper extends the methodology of parametric decomposition of the Malmquist productivity index using an output distance function. This approach addresses common methodological issues in total factor productivity estimation to produce credible and relevant results. The Malmquist index can be decomposed into several components: technical change (further broken down into technical change magnitude, input bias, and output bias), technical efficiency change, scale efficiency change, and output-mix effect. A translog output distance function is chosen to represent the production technology, and each component of the Malmquist index is computed using the estimated parameters. This parametric approach allows us to statistically test hypotheses regarding different components of the Malmquist index and the nature of production technology. The empirical application to Chinese agriculture shows that productivity grows at 2 percent per year on average from 1978 through 2010. The growth is mostly driven by technical change, which is found to be technology neutral.
Download or read book The Politics of Agricultural Mechanization in China written by Benedict Stavis and published by . This book was released on 1978 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computer Vision written by Pancham Shukla and published by Walter de Gruyter GmbH & Co KG. This book was released on 2023-02-20 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the latest developments in the fields of visual AI, image processing and computer vision. It shows research in basic techniques like image pre-processing, feature extraction, and enhancement, along with applications in biometrics, healthcare, neuroscience and forensics. The book highlights algorithms, processes, novel architectures and results underlying machine intelligence with detailed execution flow of models.
Download or read book Encyclopaedia of the History of Science Technology and Medicine in Non Western Cultures written by Helaine Selin and published by Springer Science & Business Media. This book was released on 2008-03-12 with total page 2428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here, at last, is the massively updated and augmented second edition of this landmark encyclopedia. It contains approximately 1000 entries dealing in depth with the history of the scientific, technological and medical accomplishments of cultures outside of the United States and Europe. The entries consist of fully updated articles together with hundreds of entirely new topics. This unique reference work includes intercultural articles on broad topics such as mathematics and astronomy as well as thoughtful philosophical articles on concepts and ideas related to the study of non-Western Science, such as rationality, objectivity, and method. You’ll also find material on religion and science, East and West, and magic and science.
