Return to search

Effects of organic wastes on the physical properties of cultivated soil in Hong Kong.

Ng Chi Chung. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1993. / Includes bibliographical references (leaves 126-143). / Abstract --- p.i / Acknowledgements --- p.iii / Lists of Tables --- p.vii / Lists of Figures --- p.ix / Chapter Chapter 1 --- Introduction / Chapter 1.1 --- Introduction --- p.1 / Chapter 1.2 --- Importance of soil physical properties to plant growth --- p.2 / Chapter 1.3 --- Importance of organic matter to soil physical properties --- p.5 / Chapter 1.4 --- Chemical composition of sewage sludge and spent sawdust litter and their disposal --- p.6 / Chapter 1.5 --- Objectives --- p.9 / Chapter 1.6 --- Significance of the study --- p.10 / Chapter Chapter 2 --- Literature Reviews / Chapter 2.1 --- Influence of organic wastes on soil organic matter --- p.12 / Chapter 2.2 --- Influence of organic wastes on soil aggregate stability --- p.15 / Chapter 2.3 --- Influence on bulk density and total porosity --- p.21 / Chapter 2.4 --- Influence on field capacity and water holding capacity --- p.23 / Chapter 2.5 --- Influence on soil water intake and in situ soil moisture content --- p.27 / Chapter 2.6 --- Influence on mechanical resistance --- p.28 / Chapter Chapter 3 --- Methodology / Chapter 3.1 --- Study site --- p.30 / Chapter 3.2 --- Treatments --- p.30 / Chapter 3.3 --- Soil sampling --- p.32 / Chapter 3.4 --- Methodology / Chapter 3.41 --- Organic carbon --- p.33 / Chapter 3.42 --- Aggregate stability --- p.34 / Chapter 3.43 --- Bulk density --- p.37 / Chapter 3.44 --- Field capacity --- p.37 / Chapter 3.45 --- Water characteristics curve --- p.38 / Chapter 3.46 --- Infiltration --- p.38 / Chapter 3.47 --- Water release property --- p.39 / Chapter 3.48 --- Mechanical resistance --- p.39 / Chapter 3.5 --- Statistical analysis --- p.39 / Chapter Chapter 4 --- Effect on Soil Aggregate Stability / Chapter 4.1 --- Introduction --- p.41 / Chapter 4.2 --- Results / Chapter 4.21 --- Effect on soil organic matter content --- p.45 / Chapter 4.22 --- Change in organic matter content under continuous cultivation --- p.46 / Chapter 4.23 --- Effect on aggregate stability under continuous cultivation --- p.47 / Chapter 4.24 --- The relationship between percentage aggregate stability and the amount of organic matter --- p.49 / Chapter 4.3 --- Discussion --- p.52 / Chapter 4.4 --- Conclusions --- p.60 / Chapter Chapter 5 --- "Effect on Bulk Density, Total Porosity and Mechanical Resistance" / Chapter 5.1 --- Introduction --- p.62 / Chapter 5.2 --- Results / Chapter 5.21 --- Change in bulk density and total porosity --- p.65 / Chapter 5.22 --- Change in bulk density and total porosity under continuous cultivation --- p.66 / Chapter 5.23 --- Change in bulk density and total porosity in relation to organic matter content and aggregate stability --- p.67 / Chapter 5.24 --- Change in mechanical resistance --- p.69 / Chapter 5.3 --- Discussion --- p.71 / Chapter 5.4 --- Conclusions --- p.77 / Chapter Chapter 6 --- Effect on soil water retention / Chapter 6.1 --- Introduction --- p.80 / Chapter 6.2 --- Results / Chapter 6.21 --- Field capacity and change between the second and the fourth harvest --- p.82 / Chapter 6.22 --- Relationship between field capacity and organic matter content --- p.84 / Chapter 6.23 --- Water characteristics curve --- p.84 / Chapter 6.24 --- Change in water characteristics curve between the second and the fourth harvest --- p.88 / Chapter 6.25 --- The relationship between water holding capacity and organic matter content --- p.91 / Chapter 6.26 --- Change in available water capacity and its relationship with organic matter content --- p.92 / Chapter 6.3 --- Discussion / Chapter 6.31 --- Change in field capacity --- p.95 / Chapter 6.32 --- Change in water holding capacity and available water capacity --- p.97 / Chapter 6.4 --- Conclusions --- p.100 / Chapter Chapter 7 --- Effect on Infiltration and Water Release Property / Chapter 7.1 --- Introduction --- p.102 / Chapter 7.2 --- Results / Chapter 7.21 --- Infiltration and its change under continuous cultivation --- p.103 / Chapter 7.22 --- Water release property --- p.109 / Chapter 7.3 --- Discussion --- p.112 / Chapter 7.4 --- Conclusions --- p.117 / Chapter Chapter 8 --- Conclusion / Chapter 8.1 --- Summary of findings --- p.118 / Chapter 8.2 --- Implication of the study --- p.122 / Chapter 8.3 --- Further studies --- p.123 / References --- p.126

Identiferoai:union.ndltd.org:cuhk.edu.hk/oai:cuhk-dr:cuhk_319216
Date January 1993
ContributorsNg, Chi Chung., Chinese University of Hong Kong Graduate School. Division of Geography.
PublisherChinese University of Hong Kong
Source SetsThe Chinese University of Hong Kong
LanguageEnglish
Detected LanguageEnglish
TypeText, bibliography
Formatprint, x, 143 leaves : ill. ; 30 cm.
CoverageChina, Hong Kong
RightsUse of this resource is governed by the terms and conditions of the Creative Commons “Attribution-NonCommercial-NoDerivatives 4.0 International” License (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Page generated in 0.0016 seconds