An Irrigated Area Map of the World (1999), Derived from Remote Sensing PDF Download
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Author: Prasad Srinivasa Thenkabail
Publisher: IWMI
ISBN: 9290906464
Category : Agricultural mapping
Languages : en
Pages : 78
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Book Description
This research report presents the results of a global analysis of multi-temporal time series at nominal 10 kilometer pixel resolution. Statistics of irrigation at country level are derived from these maps for different seasons and for the entire year (annualized) for the nominal year of 1999. Three methods of area abstraction are used and compared, and three methods of accuracy assessment are applied. The annualized irrigated areas of the world at the end of the last millennium were about 480 Mha of which there were 263 Mha for season 1, 176 Mha for season 2, and 41 Mha for continuous cropping. Of this, Asia alone accounts for 78 percent (375 Mha) with 59 percent from China and India. The country statistics are compared with FAO country-level statistics (see Annex I). The IWMI GIAM 10 km V2.0 map were tested based on 3 sources of independent data resulting in accuracies between 84 and 91 percent with errors of omission not exceeding 16 percent and errors of commission less than 21 percent. The total area available for irrigation (TAAI; the nearest equivalent to FAO’s equipped area) was 412 Mha.
Author: Prasad Srinivasa Thenkabail
Publisher: IWMI
ISBN: 9290906464
Category : Agricultural mapping
Languages : en
Pages : 78
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Book Description
This research report presents the results of a global analysis of multi-temporal time series at nominal 10 kilometer pixel resolution. Statistics of irrigation at country level are derived from these maps for different seasons and for the entire year (annualized) for the nominal year of 1999. Three methods of area abstraction are used and compared, and three methods of accuracy assessment are applied. The annualized irrigated areas of the world at the end of the last millennium were about 480 Mha of which there were 263 Mha for season 1, 176 Mha for season 2, and 41 Mha for continuous cropping. Of this, Asia alone accounts for 78 percent (375 Mha) with 59 percent from China and India. The country statistics are compared with FAO country-level statistics (see Annex I). The IWMI GIAM 10 km V2.0 map were tested based on 3 sources of independent data resulting in accuracies between 84 and 91 percent with errors of omission not exceeding 16 percent and errors of commission less than 21 percent. The total area available for irrigation (TAAI; the nearest equivalent to FAO’s equipped area) was 412 Mha.
Author: Prasad Thenkabail
Publisher: CRC Press
ISBN: 1420090100
Category : Technology & Engineering
Languages : en
Pages : 548
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Book Description
Increases in populations have created an increasing demand for food crops while increases in demand for biofuels have created an increase in demand for fuel crops. What has not increased is the amount of croplands and their productivity. These and many other factors such as decreasing water resources in a changing climate have created a crisis like
Author: Shunlin Liang
Publisher: Academic Press
ISBN: 0128165286
Category : Technology & Engineering
Languages : en
Pages : 1012
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Book Description
Advanced Remote Sensing: Terrestrial Information Extraction and Applications, Second Edition, is a thoroughly updated application-based reference that provides a single source on the mathematical concepts necessary for remote sensing data gathering and assimilation. It presents state-of-the-art techniques for estimating land surface variables from a variety of data types, including optical sensors like RADAR and LIDAR. The book provides scientists in a number of different fields, including geography, geophysics, geology, atmospheric science, environmental science, planetary science and ecology with access to critically-important data extraction techniques and their virtually unlimited applications. While rigorous enough for the most experienced of scientists, the techniques presented are well designed and integrated, making the book's content intuitive and practical in its implementation. - Provides a comprehensive overview of many practical methods and algorithms - Offers descriptions of the principles and procedures of the state-of-the-art in remote sensing - Includes real-world case studies and end-of-chapter exercises - Contains thoroughly revised chapters, newly developed applications and updated examples
Author: Rajib Shaw
Publisher: Emerald Group Publishing
ISBN: 0857244876
Category : Political Science
Languages : en
Pages : 412
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Book Description
This is the first academic publication to highlight the linkages between Climate Change Adaptation (CCA) and Disaster Risk Reduction (DRR). Key issues and challenges related to CCA-DRR synergy and interactions are highlighted throughout, mostly drawing lessons and experiences from the field practices and greatly increasing current awareness.
Author: Ricardo D. Lopez
Publisher: CRC Press
ISBN: 1466504323
Category : Nature
Languages : en
Pages : 311
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Book Description
Wetlands are, by their very nature, ephemeral and transitional, which makes them challenging to characterize. Yet the need for characterizing wetlands continues to grow, particularly as we develop a better understanding of the wealth of ecosystem services that they provide. Wetland Landscape Characterization: Practical Tools, Methods, and Approache
Author: Nicolas Baghdadi
Publisher: Elsevier
ISBN: 0081011830
Category : Science
Languages : en
Pages : 498
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Book Description
The environmental and economic importance of monitoring forests and agricultural resources has allowed remote sensing to be increasingly in the development of products and services responding to user needs.This volume presents the main applications in remote sensing for agriculture and forestry, including the primary soil properties, the estimation of the vegetation's biophysical variables, methods for mapping land cover, the contribution of remote sensing for crop and water monitoring, and the estimation of the forest cover properties (cover dynamic, height, biomass).This book, part of a set of six volumes, has been produced by scientists who are internationally renowned in their fields. It is addressed to students (engineers, Masters, PhD), engineers and scientists, specialists in remote sensing applied to agriculture and forestry.Through this pedagogical work, the authors contribute to breaking down the barriers that hinder the use of radar imaging techniques. - Provides clear and concise descriptions of modern remote sensing methods - Explores the most current remote sensing techniques with physical aspects of the measurement (theory) and their applications - Provides chapters on physical principles, measurement, and data processing for each technique described - Describes optical remote sensing technology, including a description of acquisition systems and measurement corrections to be made
Author: Cai, Xueliang
Publisher: IWMI
ISBN: 9290907355
Category :
Languages : en
Pages : 34
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Book Description
The Indus and Ganges River Basin, being the most populous in the world, is under extreme pressure to sustain food security. Production resources including water are being exploited to various levels from underdevelopment to heavy overexploitation. This report provides a bird’s eye view of the basin and focuses on the nexus between agricultural production and water consumption, making it possible to pinpoint the areas with high/low water productivity and identify the factors behind this, which helps to promote informed decision making in light of environmental sustainability.
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Author: International Water Management Institute (IWMI).
Publisher: IWMI
ISBN: 929090741X
Category :
Languages : en
Pages : 48
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Book Description
Author: Barry, Boubacar
Publisher: IWMI
ISBN: 9290907371
Category :
Languages : en
Pages : 34
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Book Description
The Atankwidi Catchment, which lies in the White Volta Basin in West Africa, is intensively cultivated by locals for economic gains. During dry seasons, farmers irrigate their crops, chiefly tomatoes, using shallow groundwater harvested from shallow ponds they dig using simple tools like an axe, hoe, bucket and bowls. Recent expansion in cultivated areas has brought to the fore the need to estimate the volume of shallow groundwater stored in the catchment’s underlying aquifer and to what extent it can sustain the incremental growth in irrigated areas.
Author: Arlene B. Inocencio
Publisher: IWMI
ISBN: 9290906588
Category : Irrigation projects
Languages : en
Pages : 86
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Book Description
High irrigation investment costs together with declining world prices for food and the failures of a number of high profile past irrigation projects are the main reasons for the reluctance of development agencies and governments in sub-Saharan Africa to invest more resources in irrigation. This study aims to systematically establish whether costs of irrigation projects in sub-Saharan Africa are truly high, determine the factors which influence costs and performance of irrigation projects, and recommend cost-reducing and performance-enhancing options to make irrigation investments in the region more attractive. It analyzes 314 irrigation projects implemented from 1967 to 2003 in 50 countries in Africa, Asia, and Latin America funded by the World Bank, African Development Bank and the International Fund for Agricultural Development.
