The total farmland for vegetables is roughly 153,000 hectares large, on which 2.74 million tons of crops worth TWD 77 billion, consisting of root vegetables, stem vegetables, Allium species, flower vegetables, leafy vegetables, fruit vegetables, mushrooms, etc.. The cultivation areas are mostly located in central and southern Taiwan with peak harvest throughout autumn and winter, although none of their sizes is particularly large. To cope with challenges of climate change, the usage of equipment like greenhouse or net house were encouraged, reducing the loss from natural disasters and regulating harvest seasons. As the result, the varieties along with their supplies have become adequate and thus fulfilled many commercial purposes. For those crops with strong export potential such as vegetable soybeans, carrots, and head lettuce, farming clusters were formed to further increase the efficiency through economies of scale. These crops could also play the substitution role to common bulk growing vegetables in winter, preventing over-production. Overall, the vegetable production has become a well diverse, technology-intensive, and sophisticatedly managed industry, with an export volume of 80,946 tons, valuing over TWD 4.6 billion. On the other hand, to satisfy the need of food processing and prevent shortage during typhoon season, an average 403,000 tons of potatoes for processing, cabbage, onions, etc. valuing TWD 9.4 billion were imported annually.