摘要 : Safeguarding food security is one of the United Nations Millennium Development Goals. When food production reaches its technological peak, a shortage of arable land will be the key factor that limits food production. Thus, how to ... 展开 Safeguarding food security is one of the United Nations Millennium Development Goals. When food production reaches its technological peak, a shortage of arable land will be the key factor that limits food production. Thus, how to increase the area of arable land without ecological damage is a problem faced by the whole world. China is the world's most populous country and a traditional agricultural country. Under the pressure of rapid socioeconomic development, China has taken measures to protect its cultivated land from environmental degradation and protect its food security. By reviewing the research literature, we found several ways to increase the area of arable land while protecting this land from damage. We found that natural resources such as marginal and degraded lands could potentially be converted into arable land while still protecting the ecological environment. However, implementation of such a strategy must account for each region's unique ecological and socioeconomic conditions, and will require both support from appropriate policies and ongoing monitoring and support. (C) 2017 Elsevier Ltd. All rights reserved. 收起