Operations Research (OR) which is also known as Management Science (MS) can be considered as the science of making decisions. Generally during making decisions, we are not supposed to have unlimited resources. And future more we might be required to optimize certain objectives. All the resource limitation can formulate an optunity set. Within this optunity set we need to make our best choice to achieve the possible optimal solution. This kind of OR problem might can be fitted into linear, non linear programming, Dynamic Programming or other heuristics method. Another type of OR problem is called game theory, but I am not quit familiar with it. Anyway what I am interest in is how to apply these methods into actual landscape forest planning scenario to get the optimal time and spatial arrangement of large-scale forest. The research of my group is part of the real regular national forest planning in US. Hopefully in the future, I can can have a chance to use my experiences in China