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Climate Under Cover : Digital Dynamic Simulation in Plant Bio-Engineering - T. Takakura

Climate Under Cover

Digital Dynamic Simulation in Plant Bio-Engineering

Hardcover

Published: 31st January 1993
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From mulching to greenhouses, the air space between the cover and the soil surface is the key to the classification of climates under cover. The same mechanism governs environments produced by the various covers.
This book describes and analyses all the different environments from mulching to greenhouses. The relationship between plants and environment is another important topic in the book.
Stress is placed on the link between quantitative phenomena and qualitative analyses. Most phenomena involved are nonlinear and non-steady-state. An approach called System Dynamics is used, and simulation models developed in the simulation language CSMP are fully used.
The subjects covered are of relevance to graduate students, to scientists and researchers in agriculture and biological sciences and, of course, to agricultural organizations in both the developing and developed countries.

Preface
Introduction
Europe and North Americap. 2
Asiap. 3
Japanp. 3
Covering materials: PE or PVC?p. 4
Greenhouse production in Japanp. 6
Floating mulch in Japanp. 7
Plastic Wastesp. 7
Definition of Covering and Properties of Covering Materials
Mulchingp. 9
Row covers (Tunnels)p. 11
Floating mulches (Floating row cover)p. 11
Rain sheltersp. 11
Unheated greenhousesp. 12
Covering materialsp. 12
Digital Simulation
System dynamicsp. 15
Simulation languagesp. 15
Digital simulation by CSMPp. 16
Concept of the analog computerp. 16
Comparison of CSMP program with mathematical equationsp. 17
Model structure and representationp. 20
Differential equationp. 20
Description of systemsp. 21
Heat flow and temperature regime in the soilp. 22
A model for temperature regimes in the soil (CUC-01)p. 25
Model descriptionp. 25
Time constant and integrationp. 28
Application to steady-state modelsp. 28
Heat Balance of Bare Ground
Convective heat transferp. 34
A model with solar radiation and air temperature boundary condition (CUC-02)p. 36
Mass transferp. 40
A model with latent heat transfer (CUC-03)p. 41
Radiation balancep. 45
Long-wave radiationp. 47
Solar Radiation Environment
Units of radiation and lightp. 50
Solar radiation properties of covering materialsp. 51
Calculation of transmissivity (CUC-04)p. 52
Solar radiationp. 56
The sun's altitude and azimuthp. 57
On a horizontal surfacep. 57
On a tilted surfacep. 59
Transmitted solar radiation (CUC-05)p. 60
Temperature Environment Under Cover
Effect of mulchingp. 64
Experimental measurementsp. 64
A model to simulate temperature regime under clear mulching (CUC-20)p. 65
Modification of the model for black and white mulching (CUC-21 and CUC-22)p. 71
Temperature environment under row covers (CUC-30)p. 73
Double layer greenhouse model (CUC-50)p. 81
A pad and fan greenhouse model (CUC-35)p. 87
CO[subscript 2] Environment
CO[subscript 2] concentration in soil layer (CUC-70)p. 100
CO[subscript 2] concentration in a plastic house and ventilationp. 104
Water and Water Vapor Environment
Water and water vapor movement in soilp. 105
Application to water and heat balance in soil layer (CUC-90)p. 108
Interaction between water movement and heat flowp. 114
Control Function
System responsep. 116
PID controlp. 117
Temperature control logic (CUC-120)p. 118
Feedback vs. feedforward controlp. 119
Feedback and feedforwardp. 119
System response and its application to feedforward controlp. 120
A floor-heating greenhouse with ideal conditions (CUC-122)p. 121
Plant Response to the Environment
Plant photosynthesis and respirationp. 124
Energy balance of a plant leafp. 126
Stomata resistance of plant (CUC-151)p. 127
Plant growth modelp. 132
General concept of plant growth and yield modelsp. 132
Dry matter production model (CUC-160)p. 133
Referencesp. 140
Appendixp. 144
Indexp. 150
Table of Contents provided by Blackwell. All Rights Reserved.

ISBN: 9780792321040
ISBN-10: 0792321049
Audience: Professional
Format: Hardcover
Language: English
Number Of Pages: 167
Published: 31st January 1993
Dimensions (cm): 23.5 x 15.5  x 1.1
Weight (kg): 0.42