Spatial and Temporal Analysis of Soil Water and Nitrogen Distribution Inundulating Landscapes Using a Gis-Based Model PDF Download

Author: Wen-Ling Kuo
Publisher:
ISBN:
Category :
Languages : en
Pages : 450

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Author: Wen-Ling Kuo
Publisher:
ISBN: 9780591969870
Category :
Languages : en
Pages : 218

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Finally, an example of the model application is demonstrated by evaluating the effects of water diversion ditches on the water and nitrogen distribution in a watershed in the Catskill mountains. Simulations show that diversions that are currently installed have little effect in a wet period, but can greatly modify the water and nitrogen distribution in fields near the diversions in the dry season.

Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 892

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Author: Sabine Grunwald
Publisher: CRC Press
ISBN: 1420028189
Category : Nature
Languages : en
Pages : 504

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Environmental Soil-Landscape Modeling: Geographic Information Technologies and Pedometrics presents the latest methodological developments in soil-landscape modeling. It analyzes many recently developed measurement tools, and explains computer-related and pedometric techniques that are invaluable in the modeling process. This volume provi

Author: Baxter E. Vieux
Publisher: Springer
ISBN: 9402409300
Category : Science
Languages : en
Pages : 270

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This book presents a unified approach for modeling hydrologic processes distributed in space and time using geographic information systems (GIS). This Third Edition focuses on the principles of implementing a distributed model using geospatial data to simulate hydrologic processes in urban, rural and peri-urban watersheds. The author describes fully distributed representations of hydrologic processes, where physics is the basis for modeling, and geospatial data forms the cornerstone of parameter and process representation. A physics-based approach involves conservation laws that govern the movement of water, ranging from precipitation over a river basin to flow in a river. Global geospatial data have become readily available in GIS format, and a modeling approach that can utilize this data for hydrology offers numerous possibilities. GIS data formats, spatial interpolation and resolution have important effects on the hydrologic simulation of the major hydrologic components of a watershed, and the book provides examples illustrating how to represent a watershed with spatially distributed data along with the many pitfalls inherent in such an undertaking. Since the First and Second Editions, software development and applications have created a richer set of examples, and a deeper understanding of how to perform distributed hydrologic analysis and prediction. This Third Edition describes the development of geospatial data for use in Vflo® physics-based distributed modeling.

Author: PJ. Starks
Publisher:
ISBN:
Category : Geographic information systems (GIS)
Languages : en
Pages : 17

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Soil water content (2v) is of fundamental importance in meteorology, agriculture, and hydrology, among other scientific disciplines. In hydrology, 2v partitions rainfall into runoff and infiltration, thus impacting surface and groundwater recharge, flood forecasting, and flow routing modeling. Measurement of 2v at a point is straightforward, but point measurements are inadequate for watershed hydrology due to variability of soil properties, land cover, and meteorological inputs over space. Passive microwave remote sensing systems have been successfully used to provide regional estimates of surface 2v (0-5 cm surface layer) at the spatial resolution of the sensor. To extend these data to other depths and scales, a two-layer soil water budget model was used to combine remotely sensed estimates of 2v and spatial information on land cover, soil type and meteorological inputs to predict root zone 2v over a 611 km2 watershed. A GIS was used to pre-process and geo-register spatial data sets for input into the soil water budget model, and analyze the results.

Author: Christopher Joseph Post
Publisher:
ISBN:
Category :
Languages : en
Pages : 316

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Author: Bruce A. DeVantier
Publisher:
ISBN:
Category : Geographic information systems
Languages : en
Pages : 24

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Author: Igor Florinsky
Publisher: Academic Press
ISBN: 0128046333
Category : Science
Languages : en
Pages : 508

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Book Description
Digital Terrain Analysis in Soil Science and Geology, Second Edition, synthesizes the knowledge on methods and applications of digital terrain analysis and geomorphometry in the context of multi-scale problems in soil science and geology. Divided into three parts, the book first examines main concepts, principles, and methods of digital terrain modeling. It then looks at methods for analysis, modeling, and mapping of spatial distribution of soil properties using digital terrain analysis, before finally considering techniques for recognition, analysis, and interpretation of topographically manifested geological features. Digital Terrain Analysis in Soil Science and Geology, Second Edition, is an updated and revised edition, providing both a theoretical and methodological basis for understanding and applying geographical modeling techniques. - Presents an integrated and unified view of digital terrain analysis in both soil science and geology - Features research on new advances in the field, including DEM analytical approximation, analytical calculation of local morphometric variables, morphometric globes, and two-dimensional generalized spectral analytical methods - Includes a rigorous description of the mathematical principles of digital terrain analysis - Provides both a theoretical and methodological basis for understanding and applying geographical modeling

Author:
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 784

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