ISBN-10:
0820323802
ISBN-13:
9780820323800
Pub. Date:
12/11/2003
Publisher:
University of Georgia Press
Principles of Forest Hydrology / Edition 1

Principles of Forest Hydrology / Edition 1

by John D. Hewlett
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Overview

Students and professors of hydrology, ecology, land-use management, forest and range management, soil science, physical geography, soil and water conservation, and watershed management will welcome this revision of the 1969 edition of An Outline of Forest Hydrology by John D. Hewlett and Wade L. Nutter.

The student pursuing a career in forest and wildland resources soon learns that no science is more fundamental to the art of land management than hydrology, but hydrology as a science traditionally has been subordinated to hydrology as technique. Older texts have focused on methods and applications to the exclusion of principle, occasionally leaving the hydrological effects of land use and vegetation to be interpreted from techniques rather than from knowledge of process. Soil, atmospheric, and vegetal phases of the hydrologic cycle of have neglected in many texts intended for the college student.

Hewlett’s new book focuses on natural processes and is intended to guide further study and to serve as a base for class lectures. The subject matter is organized to introduce key ideas and principles and to provide consistent terminology and clear graphic material to aid the student in comprehending the complex literature of hydrology.

Product Details

ISBN-13: 9780820323800
Publisher: University of Georgia Press
Publication date: 12/11/2003
Pages: 192
Sales rank: 1,114,400
Product dimensions: 8.20(w) x 10.90(h) x 0.50(d)

About the Author

JOHN D. HEWLETT (1922–2004) was a professor emeritus of forest resources at the University of Georgia.He had an earlier career with the U.S. Forest Service.

Table of Contents

Preface
Chapter 1Introduction To Forest Hydrology
Purpose1
Scope1
Definitions1
The four attributes of water4
Historical notes4
Chapter 2The Water And Energy Cycles
The global water cycle7
Units essential to water accounting8
Water balance of the contiguous U.S.9
Water balance of drainage basins11
Energy and water balances related12
Chapter 3Drainage Basin Morphology
Introduction16
Water and geological control of landforms16
Stream networks and their classification17
Surface and subsurface water divides20
Stream channel morphology22
Chapter 4Atmospheric Moisture And Precipitation
Atmospheric moisture25
The energy status of water28
Precipitation29
Precipitation measurement31
Rain intensity, duration and velocity33
Frequency analysis34
Calculating areal precipitation37
Precipitation water quality39
Snowpack and melt39
Chapter 5Subsurface Water
Introduction44
The soil mineral complex45
Soil moisture45
Soil moisture measurement47
Energy of water in soil48
Soil water terminology52
Soil water movement56
Infiltration and percolation59
Ground water62
Chapter 6Evaporation And Evapotranspiration
Introduction66
Evaporation as a process69
Evaporation from bare soil71
Evaporation of intercepted water72
Transpiration76
Estimating evapotranspiration84
Control of evapotranspiration89
Chapter 7Surface Water, The Hydrograph And The Runoff Process
Surface waters93
Runoff terminology107
The unit hydrograph114
The runoff process clarified124
Chapter 8Erosion And Sedimentation In Relation To Forests
Erosion and sedimentation134
Mechanics of water erosion138
Measurement of erosion143
Continental sediment export147
Detachment rates148
Summary of factors in erosion and sedimentation151
Chapter 9Forests And Floods
Floods155
The flood control controversy158
Role of forest versus other types of land use162
Chapter 10Forests And Water Quality
Introduction166
Measures of water quality166
Natural water quality170
Polluted waters172
The nutrient and hydrologic cycles174
Table Of Conversions177
Index178

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