Global irrigated area mapping: Overview and recommendations

Global irrigated area mapping: Overview and recommendations
Author: Droogers, P.
Publisher: IWMI
Total Pages: 62
Release: 2002
Genre: Geographic information systems
ISBN: 9290904690

This publication will give an overview of the available global datasets on irrigated areas and an evaluation of their strengths and weaknesses. From these analyses an outline on how to develop a global irrigated area map, based on a generic methodology, will be presented. Some examples will be given for the area covering India, Pakistan and Sri Lanka. These countries offer a broad range of irrigated areas in different environmental settings, ranging from deserts to humid tropics. This publication should be considered as a first attempt to develop such a generic methodology, rather than a presentation of actual results on the extent of irrigated areas.

An Irrigated Area Map of the World (1999), Derived from Remote Sensing

An Irrigated Area Map of the World (1999), Derived from Remote Sensing
Author: Prasad Srinivasa Thenkabail
Publisher: IWMI
Total Pages: 78
Release: 2006
Genre: Agricultural mapping
ISBN: 9290906464

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.

The Soils of the USA

The Soils of the USA
Author: L.T. West
Publisher: Springer
Total Pages: 398
Release: 2016-09-19
Genre: Nature
ISBN: 331941870X

This book provides an overview of the distribution, properties, and function of soils in the U.S., including Alaska, Hawaii, and its Caribbean territories. It discusses the history of soil surveys and pedological research in the U.S., and offers general descriptions of the country’s climate, geology and geomorphology. For each Land Resource Region (LRR) – a geographic/ecological region of the country characterized by its own climate, geology, landscapes, soils, and agricultural practices – there is a chapter with details of the climate, geology, geomorphology, pre-settlement and current vegetation, and land use, as well as the distribution and properties of major soils including their genesis, classification, and management challenges. The final chapters address topics such as soils and humans, and the future challenges for soil science and soil surveys in the U.S. Maps of soil distribution, pedon descriptions, profile images, and tables of properties are included throughout the text.

Remote Sensing of Global Croplands for Food Security

Remote Sensing of Global Croplands for Food Security
Author: Prasad Thenkabail
Publisher: CRC Press
Total Pages: 548
Release: 2009-06-24
Genre: Technology & Engineering
ISBN: 1420090100

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

Mapping irrigated areas in the Limpopo Province, South Africa

Mapping irrigated areas in the Limpopo Province, South Africa
Author: Cai, Xueliang
Publisher: International Water Management Institute (IWMI)
Total Pages: 42
Release: 2017-06-05
Genre: Technology & Engineering
ISBN: 9290908513

This report summarizes the findings of a collaborative effort to map and assess irrigated areas in the Limpopo Province, South Africa. The study was conducted by the International Water Management Institute (IWMI) in collaboration with the Department of Agriculture, Forestry and Fisheries (DAFF) and the Limpopo Department of Agriculture and Rural Development (LDARD), as part of the DAFF-supported ‘Revitalization of irrigation in South Africa’ project. Based on a combination of Landsat and Moderate Resolution Imaging Spectroradiometer (MODIS) satellite data, previous irrigated area mapping exercises carried out by DAFF and three-field ground truthing (GT) surveys, a total of 1.6 million hectares (Mha) of cropland were identified, with 262,000 ha actually irrigated in the 2015 winter season. The study also found that only 29% of all land equipped with center pivots was actually irrigated.

Land Resources Monitoring, Modeling, and Mapping with Remote Sensing

Land Resources Monitoring, Modeling, and Mapping with Remote Sensing
Author: Ph.D., Prasad S. Thenkabail
Publisher: CRC Press
Total Pages: 869
Release: 2015-10-02
Genre: Technology & Engineering
ISBN: 1482217988

A volume in the three-volume Remote Sensing Handbook series, Land Resources Monitoring, Modeling, and Mapping with Remote Sensing documents the scientific and methodological advances that have taken place during the last 50 years. The other two volumes in the series are Remotely Sensed Data Characterization, Classification, and Accuracies, and Remo

Land Surface Remote Sensing in Agriculture and Forest

Land Surface Remote Sensing in Agriculture and Forest
Author: Nicolas Baghdadi
Publisher: Elsevier
Total Pages: 498
Release: 2016-09-15
Genre: Science
ISBN: 0081011830

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