i think the chapter two should be outline in these format below “but professions ideas is also needed to make it structure flow.
2.1 Introduction
2.2 Overview of Climate Change
2.3 Impact of Climate Change on Agriculture
2.3.1 Increase in temperature
2.3.2 Change in moisture availability
2.3.3 Repetitive extreme weather occurrences
2.3.4 Rise in sea levels
2.3.5 Increase in CO2 concentration
2.4 Implications of the increasing World Population, Climate Change and the Future of Global Agricultural Productivity
2.4.1 Implications on water bodies and aquatic ecosystems
2.4.2 Implications on soil nutrition, fertilizer usage and soil erosion
2.4.3 Implications on biodiversity and conservation
2.4.4 Implications on global energy
2.4.5 Implications on crop production systems
2.4.6 Implications on crop genetic improvement
2.4.7 Implications on pest and disease management
2.4 Overview of the Effects of Climate Change on Global Crop Production
2.5 Overview of the Effects of Climate Change on Wheat Production: Cross-Country Analysis
2.6 Appraising Wheat as a Global Food Crop
2.7 Empirical Findings on the Effects of Climate Change on Wheat Production
The dissertation encompass the using modelling simulation as a key tool to determine if wheat yield would be Vulnerable to an increasing temperature. so other written journey should be cited.
You can check on the link below to have idea on what the topic is all about (project work and journals.
http://ecommons.usask.ca/bitstream/handle/10388/etd-05252010-102012/Thesis_Afshin_Amiraslany.pdf?sequence=1
http://www.sciencedirect.com/science/article/pii/B9780123847034002355
http://www.sciencedirect.com/science/article/pii/B9780123847034002276
http://www.sciencedirect.com/science/article/pii/S0308521X06002071
http://www.sciencedirect.com/science/article/pii/S0168192397000646