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Approaches And Research Progresses Of Marginal Land Productivity Expansion And Ecological Benefit Improvement In China, Xiaofeng Cao, Bo Sun, Huabang Chen, Jianmin Zhou, Xianwei Song, Xiaojing Liu, Xiangdong Deng, Xiujun Li, Yuguo Zhao, Jiabao Zhang, Jiayang Li

Bulletin of Chinese Academy of Sciences (Chinese Version)

Marginal land refers to the land with low agricultural productivity and economic benefit and fragile ecology due to the prominent limitation of soil barrier, strong restriction of water and heat resources as well as harsh topographic conditions. In China, the existing marginal land is about 1.17 billion mu (15 mu is equal to 1 ha), which is the most important resource of strategic emergency to deal with the cultivated land gap of 700 million mu. Marginal land storage is a major strategy for national food security. It has become a new international research trend to increase the productivity and ecological …